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Effects of Superheating Treatment on the Microstructure, Tensile and Thermal Conductivity Properties of Fe-Bearing Al-10Si-Mg Casting Alloy
Fe 함유 Al-10Si-Mg 주조 합금의 미세조직, 인장 및 열전도도 특성에 미치는 과열 처리의 효과
Jin-Hyeok Jang, Tae-Hoon Kang, Kwang-jun Euh, Young-Hee Cho, Kee-Ahn Lee
장진혁, 강태훈, 어광준, 조영희, 이기안
Korean J. Met. Mater. 2024;62(5):402-410.   Published online 2024 May 5
DOI: https://doi.org/10.3365/KJMM.2024.62.5.402

Abstract
In this study, we designed and manufactured a new Fe-bearing Al-10Si-Mg casting alloy (F alloy) and investigated its microstructure, mechanical properties, and thermal conductivity. Two types of Fe-bearing Al-10Si-Mg alloys were used: the Conventional-F alloy, injected at 720 ℃ and cooled by water quenching, and the Superheated-F alloy, heated to..... More

                
An Examination of Bronze Vessel Technology in the Unified Silla Period: Case Study on the Bronzes Excavated from Gwanbuk-ri Site in Buyeo
통일신라 청동용기류의 제작기술 고찰: 부여 관북리 백제유적 출토 유물을 중심으로
So Jin Kim, Woo Rin Han, Young Do Kim
김소진, 한우림, 김영도
Korean J. Met. Mater. 2024;62(5):393-401.   Published online 2024 May 5
DOI: https://doi.org/10.3365/KJMM.2024.62.5.393

Abstract
Archaeological excavations in Buyeo had revealed Bronze vessels interred within a hole in the building at the Gwanbuk-ri site. These bronze vessels are dated to the Unified silla period (9-10th centuries). To identify the bronze vessels’ manufacturing technology, metallurgical analyses were carried out using Optical Microscopy, SEM-EDS and EPMA. The..... More

                
Microstructure, Thermal and Mechanical Properties of AlN-MgO Composites Prepared by Spark Plasma Sintering
방전 플라즈마 소결법으로 제조된, AlN-MgO 소결체의 미세구조와 열적, 기계적 특성
Mohan Chen, Myungjin Jung, Jung-Won An, Seung Yong Shin, Yunhwi Park, Sunrae Kim, Su Yong Nam, Woo-Jae Lee, Se-Hun Kwon
모한첸, 정명진, 안정원, 신승용, 박윤휘, 김선래, 남수용, 이우재, 권세훈
Korean J. Met. Mater. 2024;62(5):367-376.   Published online 2024 May 5
DOI: https://doi.org/10.3365/KJMM.2024.62.5.367

Abstract
AlN-MgO composites with different compositions were prepared by spark plasma sintering, and the effects of their composition on their microstructure, thermal properties, and mechanical properties were systemically investigated. MgO compositions in the AlN-MgO composites were controlled from 20 to 80 wt%. The results indicated that a phase transition did not..... More

                
Friction and Wear Behavior of Selective Laser Melted Ti6Al4V-Equine Bone Nanocomposites
선택적 레이저 용융 Ti6Al4V-Equine Bone 나노 복합재료의 마찰 및 마모 특성
Se-Hee Kim, Su-Hyun Bae, Sang-Bae Park, Hoon Seonwoo, Se-Eun Shin
김세희, 배수현, 박상배, 선우훈, 신세은
Korean J. Met. Mater. 2024;62(5):351-359.   Published online 2024 May 5
DOI: https://doi.org/10.3365/KJMM.2024.62.5.351

Abstract
Ti6Al4V is commonly used in implants because of its excellent mechanical properties, corrosion resistance, and biocompatibility. While Hydroxyapatite (HAp) is typically used for strong biological bonding between Ti6Al4V implants and bone tissue, this study takes a different approach by incorporating Equine Bone (EB), which has a chemical structure similar to..... More

                
Preparation of W-Ni-Cu Alloy Powder by Hydrogen Reduction of Metal Oxides
금속산화물 분말의 수소환원에 의한 W-Ni-Cu 합금분말의 합성
Youn Ji Heo, Eui Seon Lee, Ji Won Choi, Jongmin Byun, Sung-Tag Oh
허연지, 이의선, 최지원, 변종민, 오승탁
Korean J. Met. Mater. 2024;62(5):334-339.   Published online 2024 May 5
DOI: https://doi.org/10.3365/KJMM.2024.62.5.334

Abstract
The effect of powder processing on the microstructure and sinterability of the heavy alloy W-Ni-Cu was investigated. The heavy alloy powders were prepared by the ball milling and hydrogen reduction of metal oxide powders. As the milling time increased, the size of the powder mixture decreased and at 5 h..... More

                
Research Progress in Nano Materials and Structural Designs for Flexible Piezoresistive Sensors
유연 압저항 센서에 적용되는 나노 소재 및 구조 설계에 대한 최신 연구 동향
Yeoul Kang, Jung Woo Lee
강여울, 이정우
Korean J. Met. Mater. 2024;62(3):239-249.   Published online 2024 Feb 28
DOI: https://doi.org/10.3365/KJMM.2024.62.3.239

Abstract
This review provides an overview of recent advances in the materials and structural design of flexible piezoresistive sensors, which are of significant interest as smart devices in the Fourth Industrial Revolution. Recent research has focused on addressing demand for a wide pressure range and high sensitivity for use in diverse..... More

                
Development of Highly Machinable Ti Alloy with Exceptional Tensile Properties by Er Alloying Element Addition
Er 합금 원소 첨가를 통한 인장 물성과 절삭성이 우수한 Ti 합금 개발
Yi Seul Choi, Jeong Mok Oh, Chan Hee Park, Wook Jin Lee, Yong ho Park, Jong Woo Won
최이슬, 오정목, 박찬희, 이욱진, 박용호, 원종우
Korean J. Met. Mater. 2024;62(3):171-179.   Published online 2024 Mar 5
DOI: https://doi.org/10.3365/KJMM.2024.62.3.171

Abstract
This study demonstrates that the addition of the rare earth element Erbium (Er) significantly enhances the machinability and tensile properties of titanium (Ti). Pure Ti alloys and Er-added Ti alloys with 0.5-1.1 wt.% Er content were prepared, and their microstructure, machinability, and tensile properties were compared. Two different types of..... More

                
Effect of Solution Temperature and Quench Delay on the Microstructure and Mechanical Properties of an Extruded Al-Mg-Si-Cu-Mn alloy
Al-Mg-Si-Cu-Mn 합금 압출재의 미세조직 및 기계적 성질에 미치는 용체화 온도와 퀜칭 지연의 영향
Jisu Kim, Jeki Jung, Hyun-Seok Cheon, Byung-joo Kim, Cha-Yong Lim, Su-Hyeon Kim, Yoon Suk Choi
김지수, 정제기, 천현석, 김병주, 임차용, 김수현, 최윤석
Korean J. Met. Mater. 2024;62(2):132-141.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.132

Abstract
The effect of solution temperature and quench delay on the microstructure and mechanical properties of an extruded Al-Mg-Si-Cu-Mn alloy was investigated by employing differential scanning calorimetry, transmission electron microscopy, hardness test, and tensile test. The extruded specimens were held at 500 and 540 oC, respectively, for 80 min for solutionizing..... More

                
Tensile and Fatigue Properties of WC-20 wt%Co Cemented Carbides under Microstructural Variations
WC-20wt%Co 초경 합금의 미세 조직 변화에 따른 인장 및 피로 성질
Gue Serb Cho, Kyung Il Kim, Wooram Noh
조규섭, 김경일, 노우람
Korean J. Met. Mater. 2023;61(12):933-942.   Published online 2023 Nov 30
DOI: https://doi.org/10.3365/KJMM.2023.61.12.933

Abstract
WC-Co cemented carbide has excellent mechanical properties and is widely used in many industrial applications including cold forging dies and cutting tools. The tensile and fatigue properties of WC-20wt%Co cemented carbides with microstructural variations were investigated. Microstructure parameters such as Co binder content, WC particle size, binder mean free path,..... More

                
Changes in Microstructure, Mechanical and Electrical Properties with Progress of Cold Wire-Drawing for AA1070
Sang-Hyeon Jo, Seong-Hee Lee
Korean J. Met. Mater. 2023;61(11):867-873.   Published online 2023 Oct 29
DOI: https://doi.org/10.3365/KJMM.2023.61.11.867

Abstract
Commercial AA1070 alloy for electrical wire is severely deformed by the drawing process when a rod with a diameter of 2 mm is greatly reduced to 0.4 mm by multi-pass. Changes in the microstructure, mechanical properties, and electrical properties of the Al alloy during the wire-drawing process were investigated in..... More

                
A Study on the Microstructure, Tensile and Fatigue Properties of Martensitic Stainless Steel Plate
Hyojoo Lee, Sam Yaw Anaman, Nam-Su Rho, Si-Hyun Sung, Hyun-Min Sung, Sang-Yeob Lee, Hoon-Hwe Cho
Korean J. Met. Mater. 2023;61(11):815-823.   Published online 2023 Oct 29
DOI: https://doi.org/10.3365/KJMM.2023.61.11.815

Abstract
The microstructure, tensile and fatigue properties of a martensitic stainless steel (MSS) plate with a thickness of 0.152 mm are investigated in this study. The microstructural properties were initially studied using electron backscatter diffraction microscopy. High dislocation densities were observed in the microstructure, along with the rolling texture revealed by..... More

                
Effect of Process Parameter and Scanning Strategy on the Microstructure and Mechanical Properties of Inconel 625 Superalloy Manufactured by Laser Direct Energy Deposition
레이저 직접 적층 공정으로 제조된 Inconel 625 초합금의 미세구조 및 기계적 특성에 공정 변수 및 스캔 전략이 미치는 영향
Hyunji Nam, Qing-Ye Jin, Jiyoung Park, Wookjin Lee
남현지, Qing-Ye Jin, 박지영, 이욱진
Korean J. Met. Mater. 2023;61(10):772-784.   Published online 2023 Sep 25
DOI: https://doi.org/10.3365/KJMM.2023.61.10.772

Abstract
This study aimed to investigate the effect of process parameters on the microstructure and mechanical properties of Inconel 625 alloy manufactured by direct energy deposition process. The Inconel 625 samples were produced by varying the laser scanning speeds from 720 - 960 mm/min while maintaining the same the laser energy..... More

                   Crossref 1
Effect of Oxygen Content on Microstructure and Mechanical Properties of Additive Manufactured Ti-6Al-4V
산소함량에 따른 Ti-6Al-4V 적층제조 조형체의 미세조직 및 기계적 특성 변화
Tae Jin Kang, P. L Narayana, Seong Woo Choi, Jae Hyuk Kim, Jae-Keun Hong, Taekyung Lee
강태진, P.L. Narayana, 최성우, 김재혁, 홍재근, 이태경
Korean J. Met. Mater. 2023;61(9):714-720.   Published online 2023 Aug 30
DOI: https://doi.org/10.3365/KJMM.2023.61.9.714

Abstract
Titanium alloys are used in many fields including military, aerospace, and biomedical because of their excellent specific strength, corrosion resistance, and biocompatibility. Recently, much research has been focused on addressing the disadvantages of conventional manufacturing methods, including reducing material and energy waste when manufacturing titanium alloy parts by additive manufacturing..... More

                   Web of Science 3  Crossref 5
A Study on the Relationship between Microstructure and Impact Toughness with Different Heat Inputs and Post-Seam Annealing Temperatures in API X70 Electric Resistance Welded Steel Pipe
항복강도 70 ksi급 전기저항용접 강관의 입열량 및 심 어닐링 온도에 따른 미세조직과 저온충격인성 상관관계 고찰
Tae-Hun Kim, Chiwon Kim, Chan-Hee Lee, Jinseop Kwack, Donghyeon Jeon, Hyun-Uk Hong
김태훈, 김치원, 이찬희, 곽진섭, 전동현, 홍현욱
Korean J. Met. Mater. 2023;61(9):659-668.   Published online 2023 Aug 30
DOI: https://doi.org/10.3365/KJMM.2023.61.9.659

Abstract
In this study, the influence of heat input and post-seam annealing (PSA) temperature on the microstructure and impact toughness of electric resistance welded (ERWed) API X70 steel pipe was investigated. The ERW seam welds of pipes were fabricated with low, moderate, and high heat inputs, and followed by the PSA..... More

                
Effects of Stacking Number on Microstructure and Mechanical Properties for Cold Roll Bonding Process of Dissimilar Aluminum Alloy Sheets
Seong-Hee Lee
Korean J. Met. Mater. 2023;61(9):652-658.   Published online 2023 Aug 30
DOI: https://doi.org/10.3365/KJMM.2023.61.9.652

Abstract
A cold roll-bonding (CRB) process is applied to study the effects of stacking number on the microstructure and mechanical properties of roll-bonded and age-treated Al sheets. Commercial AA1050 and AA6061 sheets with a thickness of 2 mm were stacked alternately on each other to two and four layers, and roll-bonded..... More

                   Web of Science 4  Crossref 4
Research on Thermal Properties and High Temperature Exposure Behavior of Non-Skid Coating Fabricated by Twin Wire Arc Spraying
Twin wire arc spray 용사코팅 공정을 통해 제작된 미끄럼 방지 코팅의 열적 특성 및 고온노출 거동 연구
Hansol Kwon, Youngjin Park, Uk Hee Nam, Eungsun Byon
권한솔, 박영진, 남욱희, 변응선
Korean J. Met. Mater. 2023;61(9):642-651.   Published online 2023 May 14
DOI: https://doi.org/10.3365/KJMM.2023.61.9.642

Abstract
Conventional non-skid coatings for marine construction contain polymeric materials. These materials are generally susceptible to high temperature environments because of their low thermal conductivity and thermal resistance. A metal-based non-skid coating has great potential for high temperature applications, yet, there has only been limited research. In this study, twin wire..... More

                   Web of Science 1  Crossref 1
Influence of Heat-Treatment on Microstructures and Mechanical Properties of CuCrFeMnNi High-Entropy Alloy
CuCrFeMnNi 고엔트로피 합금의 열처리에 따른 미세조직 및 기계적 물성 변화 연구
Hoseop Song, Sung Ho Song, Jaiyoung Cho, Gian Song
송호섭, 송성호, 조재영, 송기안
Korean J. Met. Mater. 2023;61(6):449-457.   Published online 2023 May 18
DOI: https://doi.org/10.3365/KJMM.2023.61.6.449

Abstract
High entropy alloys (HEAs) are defined as a multi-element alloy including more than 4 elements with near equi-atomic percentage. In general, the configurational entropy of the HEAs is known to be sufficient to stabilize a single solid solution, such as body-centered cubic (BCC), face-centered cubic (FCC) and hexagonal-closed pack (HCP)...... More

                
Tensile testing at the Extremely Low Temperature of 6K : Microstructure and Mechanical Properties of a Fe-Mn-Cr Steel
6K 초극저온 인장 시험 : Fe-Mn-Cr 강의 미세조직 및 기계적 물성
Young-Kyun Kim, Ka-Ram Lim, Young-Sang Na
김영균, 임가람, 나영상
Korean J. Met. Mater. 2023;61(6):389-396.   Published online 2023 May 18
DOI: https://doi.org/10.3365/KJMM.2023.61.6.389

Abstract
Materials with superior cryogenic strength and good ductility are increasingly in demand for resident friendly liquid-hydrogen (20K) storage tanks. Additionally, the space industry also requires materials that retain excellent mechanical properties at extremely low temperatures. However, mechanical testing at such low temperatures is highly limited due to the difficulties in..... More

                
Machine Learning-Based Prediction of Grain Size from Colored Microstructure
기계학습을 이용한 색상형 미세조직의 결정립 크기 측정
Jun-Ho Jung, Hee-Soo Kim
정준호, 김희수
Korean J. Met. Mater. 2023;61(5):379-387.   Published online 2023 Apr 20
DOI: https://doi.org/10.3365/KJMM.2023.61.5.379

Abstract
We constructed a convolutional neural network to estimate average grain size from microstructure images. In the previous study from our research group, the network was trained using GB-type images in which the grain matrix and grain boundary were represented in white and black, respectively. The model well estimated the same..... More

                
Effect of added TiO<sub>2</sub> on the mechanical properties of sintered Al<sub>2</sub>O<sub>3</sub> insulator
Ri Joo Kim, Han Gyeol Jeong, Ye Ji Son, So Yeon Si, Sung-Soo Ryu, Sang Ki Ko, Hyun Seon Hong
Korean J. Met. Mater. 2023;61(5):330-337.   Published online 2023 Apr 20
DOI: https://doi.org/10.3365/KJMM.2023.61.5.330

Abstract
The effect of TiO2 additive concentration and sintering temperatures on the densification of alumina (Al2O3 ) ceramics were investigated. Densified alumina specimens were prepared by uniaxial pressing at a pressure of 60 MPa followed by isothermal heating at either 1400, 1500, or 1600 o C for 2 h. The relative..... More

                   Crossref 1
Investigation of Phase Transformation and Mechanical Properties of A356 Alloy with Cu and Zr Addition during Heat Treatment
Cu 및 Zr 첨가 A356 합금의 열처리 조건에 따른 상 변화와 기계적 특성 분석
Tae-Ung Song, Ja-Uk Koo, Seung-Byeong Jeon, Chang-Yeol Jeong
송태웅, 구자욱, 전승병, 정창열
Korean J. Met. Mater. 2023;61(5):311-323.   Published online 2023 Apr 20
DOI: https://doi.org/10.3365/KJMM.2023.61.5.311

Abstract
Cast A356(Al-Si-Mg) alloys are widely used in automotive and general applications because of their mechanical properties and castability. Al-Si-Mg-(Cu) alloys typically lose their strength above 170 o C due to coarsening of precipitates, which limits their application to components. To maintain their strength at elevated temperature, Al-Si-Mg-(Cu) alloys are modified..... More

                   Web of Science 1  Crossref 1
Effect of Fe-Cr-B on the Microstructure and Mechanical Properties of a Powder Injection Molding Processed Fe-Cr-B/316L Stainless Steel Matrix Composite
분말 사출 성형된 Fe-Cr-B/316L 스테인레스강 복합재료의 미세조직과 기계적 특성에 미치는 Fe-Cr-B의 영향
Young-Kyun Kim, Yeun-Ah Joo, Tae-Shik Yoon, Kee-Ahn Lee
김영균, 주연아, 윤태식, 이기안
Korean J. Met. Mater. 2023;61(1):9-17.   Published online 2022 Dec 28
DOI: https://doi.org/10.3365/KJMM.2023.61.1.9

Abstract
Stainless steel-based composites (SMCs) mixed with 316L stainless steel powder and Fe-Cr-B based M alloys powder ed M) powder were manufactured using the powder injection molding (PIM) process, and their microstructure and mechanical properties were investigated. To examine the effect of M content on the properties of SMCs, the M..... More

                
Mechanical Properties and Microstructural Evolutions of High-Pressure Torsion-Processed Al7068 Alloy
고압비틀림 공정 처리된 Al7068 합금의 기계적 특성 및 미세조직 변화
Juhee Oh, Sujung Son, Hyoung Seop Kim, Jae Bok Seol, Hyokyung Sung, Jung Gi Kim
오주희, 손수정, 김형섭, 설재복, 성효경, 김정기
Korean J. Met. Mater. 2023;61(1):1-8.   Published online 2022 Dec 28
DOI: https://doi.org/10.3365/KJMM.2023.61.1.1

Abstract
The combination of severe plastic deformation, deformational heat, and frictional heat generated during the high-pressure torsion process has a great effect on microstructural evolutions, including grain refinement, dynamic recrystallization and recovery. In particular, the low melting temperature metallic alloys (e.g., aluminum and magnesium) also induce nano-precipitations in the matrix during..... More

                   Web of Science 1  Crossref 2
Evaluation of Tensile Properties and Microstructure of a Scraped Gas Turbine Blade using Miniature Specimens
미소 시편을 이용한 가스터빈 블레이드 사용품의 인장 및 미세조직 특성평가
Youngdae Kim, Yinsheng He, Jiye Bang, Jinesung Jung
김영대, 하인생, 방지예, 정진성
Korean J. Met. Mater. 2022;60(11):865-871.   Published online 2022 Oct 31
DOI: https://doi.org/10.3365/KJMM.2022.60.11.865

Abstract
A gas turbine (GT) blade is a key hot-pass component for advanced GT engines, and should have stable properties under extreme conditions of 1,350°C and 3,600rpm, etc. The GT blade, after operating with nearly 800 equivalent start-stops (ES) or 24,000 equivalent operation hours (EOH), should be replaced due to degradation..... More

                   Web of Science 1  Crossref 2
Effect of Microstructure on Strain Aging and Hydrogen Embrittlement Behavior of Bake Hardening Steels
소부경화강의 변형 시효 및 수소취성 거동에 미치는 미세조직의 영향
Jae-Yun Kim, Seok-Woo Ko, Byoungchul Hwang
김재윤, 고석우, 황병철
Korean J. Met. Mater. 2022;60(11):811-818.   Published online 2022 Oct 31
DOI: https://doi.org/10.3365/KJMM.2022.60.11.811

Abstract
The strain aging and hydrogen embrittlement behavior of two bake hardening (BH) steels with different microstructures were investigated in this study. The single-phase BH steel was composed of fully ferrite, while the dual-phase BH steel consisted of ferrite and 3 % martensite. The BH index and aging index (AI) of..... More

                   Web of Science 3  Crossref 3
Bronze Production Systems in 6-7 Centuries South Korea: Micro-Structural and Micro-Chemical Analysis of Slags
슬래그의 미세구조 및 화학분석을 통한 6-7세기 한국의 청동 야금 기술 연구
So Jin Kim, Woo Rim Han, Dong Hyeok Moon, Na Ra Lee, Young Do Kim
김소진, 한우림, 문동혁, 이나라, 김영도
Korean J. Met. Mater. 2022;60(10):774-781.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.774

Abstract
Metallurgical remains such as crucible, mould, slag and tuyere are generated in the production of bronze. The analysis of slag in particular can be used to identify the raw materials, processes and environments (temperature and condition) employed in the bronze fabrication . The Gwanbuk-ri site in Buyeo is known as..... More

                   Web of Science 1  Crossref 1
A Study on the Interrelationship between the Microstructural Features and the Elevated Temperature Strength of Multicomponent Al-Si-Cu-Ni Casting Alloys
다성분계 Al-Si-Cu-Ni 합금의 미세조직적 인자와 고온강도의 상관관계에 대한 연구
Min-Su Jo, Young-Hee Cho, Jung-Moo Lee, Soo-Bae Kim, Su-Hyeon Kim, Jae-il Jang
조민수, 조영희, 이정무, 김수배, 김수현, 장재일
Korean J. Met. Mater. 2022;60(7):489-501.   Published online 2022 Jun 3
DOI: https://doi.org/10.3365/KJMM.2022.60.7.489

Abstract
The elevated temperature strength of multicomponent Al-Si alloys is greatly affected by the volume fraction and the interconnectivity of hard phases formed upon solidification. In the present investigation, such influences were examined for two Al-Si-Cu-Ni alloys with different total volume fractions of hard phases. To control the microstructural features related..... More

                   Web of Science 2  Crossref 2
Effect of Sn addition on the Microstructure and Frictionwear Properties of a Nodular Graphite Cast Iron
Won-Sang Shin, Seungwoo Baek, Yoon-Jun Kim
Korean J. Met. Mater. 2022;60(6):471-477.   Published online 2022 May 24
DOI: https://doi.org/10.3365/KJMM.2022.60.6.471

Abstract
Nodular graphite cast iron is used in the railway and automobile industries because of its excellent workability, abrasion resistance, mechanical strength, and hardenability. To use nodular graphite cast iron in harsh environments, it is essential to examine their friction–wear properties in conjunction with the surface hardness of the materials. Therefore,..... More

                   Web of Science 4  Crossref 4
Effects of Electro-force Control on the Microstructure and Welding Characteristic During Resistance Spot Welding
Al 5052-H32 합금의 저항 점 용접 시 가압력 제어 방식에 따른 미세조직 및 용접특성 비교
Wonho Kim, Jaehun Kim, Hyunuk Jun, Jaewon Kim, Eunkyung Lee, Changwook Ji
김원호, 김재훈, 전현욱, 김재원, 이은경, 지창욱
Korean J. Met. Mater. 2022;60(5):350-359.   Published online 2022 Apr 22
DOI: https://doi.org/10.3365/KJMM.2022.60.5.350

Abstract
Recently, lightweight vehicle bodies are in increasing demand to satisfy exhaust gas and environmental regulations around the world. In particular, aluminum alloys are widely used to manufacture lightweight parts, because of their excellent properties including corrosion resistance and mechanical properties. After the forming process, the welding process is important for..... More

                   Web of Science 1  Crossref 1
Effect of Cu on the Microstructure of Al-8Zn-2.5Mg-xCu Alloys Fabricated by Twin roll casting
박판주조법으로 제조한 Al-8Zn-2.5Mg-xCu 합금 판재의 미세조직에 미치는 Cu의 영향
Dong-Guk Kim, Yong hee Jo, Yun-Soo Lee, Yong-You Kim, Hyoung-Wook Kim, Jung-Ki Kim
김동국, 조용희, 이윤수, 김용유, 김형욱, 김정기
Korean J. Met. Mater. 2022;60(4):329-339.   Published online 2022 Mar 28
DOI: https://doi.org/10.3365/KJMM.2022.60.4.329

Abstract
The effect of Cu content on the microstructure and mechanical properties of Al-8.0Zn-2.5Mg-xCu (x: 0, 1, 2, 3) aluminum alloys manufactured by the twin-roll casting process was investigated. The Al-8.0Zn-2.5Mg-xCu alloy showed an increase in surface defects with increasing Cu content. This is because the amount of residual liquid in..... More

                   Web of Science 1  Crossref 1
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