| Home | E-Submission/Review | Sitemap | Editorial Office |  
top_img
Korean Journal of Metals and Materials Search > Browse Articles > Search



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

                   Crossref 1
Analysis of Dimensional Change in Zr-2.5%Nb CANDU Pressure Tube Material aged at 300-400C using Neutron Diffraction
300-400oC에서 시효 처리된 Zr-2.5%Nb CANDU 압력관 재료에서 중성자 회절을 이용한 dimensional change 분석
Jong Yeob Jung, Hyung Sub Kim, Sung Soo Kim, Young Suk Kim
정종엽, 김형섭, 김성수, 김영석
Korean J. Met. Mater. 2022;60(5):341-349.   Published online 2022 Apr 22
DOI: https://doi.org/10.3365/KJMM.2022.60.5.341

Abstract
The primary boundary of the CANDU reactor consists of Zr-2.5%Nb alloy pressure tubes and SA106 alloy feeder pipes. The pressure tubes are exposed to fast neutron (E>1Mev) irradiation during reactor operation, and experience dimensional changes. The actual dimensional change in the pressure tube during in-service operation is greater than the..... More

                   Web of Science 1  Crossref 1
Development of Light-Weight TRIP/TWIP FCC High Entropy Alloy with High Specific Strength and Large Ductility
고비강도와 고연신을 가지는 다중변형기구 하이엔트로피 합금 개발
Kook Noh Yoon, Hyun Seok Oh, Je In Lee, Eun Soo Park
윤국노, 오현석, 이제인, 박은수
Korean J. Met. Mater. 2021;59(12):857-869.   Published online 2021 Nov 19
DOI: https://doi.org/10.3365/KJMM.2021.59.12.857

Abstract
In this study we developed a novel (TRIP+TWIP) high entropy alloy (HEA) with high specific strength and large ductility. First, by controlling the atomic constitution of the 3d transition metals (Cr, Mn, Fe, Co, and Ni), we designed a light-weight TRIP-assisted dual-phase HEA with a non-equiatomic composition of Cr22Mn6Fe40Co26Ni6, which..... More

                   Web of Science 1  Crossref 1
The Cause of Intergranular (IG) Fracture by Thermal Embrittlement in SA508 of Reactor Pressure Vessel (RPV) Steel
압력 용기 재료 SA508에서 열적 처리에 따른 입계 파괴의 원인
Sung Soo Kim, Jung Jong Yeob, Young Suk Kim
김성수, 정종엽, 김영석
Korean J. Met. Mater. 2021;59(9):589-601.   Published online 2021 Aug 4
DOI: https://doi.org/10.3365/KJMM.2021.59.9.589

Abstract
Intergranular(IG) fracture due to thermal treatment has been reported in a reactor pressure vessel(RPV) steel of Russian light water reactor in last decade. This is attributed to grain boundary segregation of phosphorus (P) or precipitation of carbide, etc.. This is a finding a difference in microstructure before and after IG..... More

                   Web of Science 3  Crossref 3
Short Range Ordering (SRO) Reaction in Ni-base Alloy X-750
Ni-base X-750 합금에서의 단 범위 규칙화 반응
SungSoo Kim, Jung Jong Yeob, Young Suk Kim
김성수, 정종엽, 김영석
Korean J. Met. Mater. 2020;58(9):590-598.   Published online 2020 Aug 13
DOI: https://doi.org/10.3365/KJMM.2020.58.9.590

Abstract
The short range ordering (SRO) reaction of the X-750 Ni-base alloy used as a garter spring material for CANDU reactors was systematically investigated through differential scanning calorimeter (DSC) analysis. Water quenching (WQ) after solution annealing (SA) and 20% cold rolled (CR) X-750 were prepared and these samples were subjected to..... More

                   Web of Science 5  Crossref 4
Effect of Carbon Addition and Recrystallization on the Microstructure and Mechanical Properties of CoCrFeMnNi High Entropy Alloys
CoCrFeMnNi 고엔트로피 합금에서 탄소 첨가 및 재결정열처리가 미세구조 및 기계적 특성에 미치는 영향
Jun Yeong Ko, Jae Sook Song, Sun Ig Hong
고준영, 송재숙, 홍순익
Korean J. Met. Mater. 2018;56(1):26-33.   Published online 2018 Jan 1
DOI: https://doi.org/10.3365/KJMM.2018.56.1.26

Abstract
The effect of carbon addition on the cast and rolled microstructures of CoCrFeMnNi high entropy alloys were studied. Both as-cast CoCrFeMnNi and CoCrFeMnNiC0.1 alloys have a dendritic microstructure. Small carbide particles were observed at the inter-dendritic region in the as-cast CoCrFeMnNiC0.1 and elongated-grained structure with aligned carbides were developed at..... More

       Crossref 5
Development of Rare-Earth Element Based High Entropy Bulk Metallic Glasses
희토류 원소계 고엔트로피 벌크 비정질 합금 개발
Jinyeon Kim, Hyun Seok Oh, Jinwoo Kim, Eun Soo Park
김진연, 오현석, 김진우, 박은수
Korean J. Met. Mater. 2018;56(1):14-25.   Published online 2018 Jan 1
DOI: https://doi.org/10.3365/KJMM.2018.56.1.14

Abstract
High entropy alloys (HEAs) are a relatively new class of metallic materials. HEAs lead to high mixing entropy and the formation of a simple solid solution rather than intermediate phases. This might be explained by the fact that the configurational entropy outweighs the enthalpy of formation of intermetallic compounds. Meanwhile,..... More

       Crossref 1
Microstructure and Mechanical Properties of As-cast CoCrFeMnNi High Entropy Alloy
CoCrFeMnNi 고엔트로피합금 주조재의 미세조직 및 기계적 특성
Minju Kang, Jong Woo Won, Ka Ram Lim, Sang Hyeop Park, Seong Moon Seo, Young Sang Na
강민주, 원종우, 임가람, 박상협, 서성문, 나영상
Korean J. Met. Mater. 2017;55(10):732-738.   Published online 2017 Sep 28
DOI: https://doi.org/10.3365/KJMM.2017.55.10.732

Abstract
In this study, we made large-scale ingots of CoCrFeMnNi high entropy alloy by vacuum induction melting. The as-cast CoCrFeMnNi high entropy alloy contained a high proportion of columnar structures with a few equiaxed grains, and showed single phase fcc solid solutions without macro segregation and low interstitial levels. The tensile..... More

       Crossref 4
Age Hardening and Re-crystallization Softening of a CoCrFeMnNi High Entropy Alloy
고엔트로피 합금강의 시효경화 및 재결정 연화현상
Byung Hak Choe, Hyeon Su Jang, Hyoung Seop Kim, Jong Un Moon
최병학, 장현수, 김형섭, 문종언
Korean J. Met. Mater. 2017;55(10):684-688.   Published online 2017 Sep 28
DOI: https://doi.org/10.3365/KJMM.2017.55.10.684

Abstract
Age hardening and re-crystallization softening of a type of high entropy alloy, CoCrFeMnNi, was performed to investigate the relationship between microstructure and the property of mechanical hardness. Equiatomic CoCrFeMnNi was produced by casting followed by homogenizing, cold rolling and post heat treatments. TEM analysis revealed that the microstructure of the..... More

    
Fabrication of the High-Entropy Alloys and Recent Research Trends: A Review
고엔트로피 합금의 제조 방법과 연구 동향: 리뷰
Dami Yim, Hyoung Seop Kim
임다미, 김형섭
Korean J. Met. Mater. 2017;55(10):671-683.   Published online 2017 Sep 28
DOI: https://doi.org/10.3365/KJMM.2017.55.10.671

Abstract
Abstract: High-entropy alloys (HEAs), which are defined as a single phase crystalline solid solution with the composition of each constituent element in the range of 5-35 at%, have been the subject of intensive study in the last decade. Most of the HEA research is focused on alloy design, microstructural characterization,..... More

       Crossref 2
Effect of Configurational Entropy of Mixing on Thermophysical Properties in Single Phase FCC Solid Solutions with Multi-Principal Elements
혼합엔트로피 제어에 따른 단일 FCC 고용체 합금의 물성변화 분석
Je In Lee, Hyun Seok Oh, Jun Hyuk Kim, Eun Soo Park
이제인, 오현석, 김준혁, 박은수
Korean J. Met. Mater. 2017;55(1):1-9.   Published online 2017 Jan 5
DOI: https://doi.org/10.3365/KJMM.2017.55.1.1

Abstract
In the present study, we systematically investigated the effect of entropy of mixing (ΔSmix) on the mechanical and thermal properties of single phase FCC solid solutions with multi-principal elements. An increase in ΔSmix led to an increase in micro-hardness and a decrease in thermal conductivity (κ) due to severe lattice..... More

       Crossref 8
The Cause of Intergranular (IG) Fracture by Thermal Embrittlement in SA508 of Reactor Pressure Vessel (RPV) Steel
압력 용기 재료 SA508에서 열적 처리에 따른 입계 파괴의 원인

Published online 1999 Nov 30
Abstract
Intergranular(IG) fracture due to thermal treatment has been reported in a reactor pressure vessel(RPV) steel of Russian light water reactor in last decade. This is attributed to grain boundary segregation of phosphorus (P) or precipitation of carbide, etc.. This is a finding a difference in microstructure before and after IG cracking; this cannot... More
1 |
E-Submission
Email Alert
Author's Index
Specialties
Journal Impact Factor 1.1
The Korean Institute of Metals and Materials
SCImago Journal & Country Rank
Scopus
GoogleScholar
Similarity Check
Crossref Cited-by Linking
KOFST
COPE
Editorial Office
The Korean Institute of Metals and Materials
6th Fl., Seocho-daero 56-gil 38, Seocho-gu, Seoul 06633, Korea
TEL: +82-2-557-1071   FAX: +82-2-557-1080   E-mail: metal@kim.or.kr
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © The Korean Institute of Metals and Materials.                 Developed in M2PI