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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

                
Effect of Mg Content and Cooling Rate After Solidification on the Mechanical Properties of T5-treated Al-Si-Mg Alloy
Al-Si-Mg합금에서 Mg함량과 주조응고 후 냉각속도가 T5 처리시 기계적 특성에 미치는 영향
Hyeon-Woo Son, Tae-Min Koo, Young-Hee Cho, Jung-Moo Lee
손현우, 구태민, 조영희, 이정무
Korean J. Met. Mater. 2023;61(7):472-479.   Published online 2023 Jun 21
DOI: https://doi.org/10.3365/KJMM.2023.61.7.472

Abstract
The effects of Mg content and cooling rate on the T5 treatment of Al-Si-Mg alloys have been investigated using Avrami kinetics and transmission electron microscopy. The alloys were super-heated at 800 oC for 1 hr followed by degassing treatment at 720 oC for 15 min, and poured into a metallic..... More

                   Web of Science 2  Crossref 3
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
Influence of Ultrasonic Melt Treatment and Cooling Rates on the Microstructural Development and Elevated Temperature Mechanical Properties of a Hypereutectic Al-18Si-4Cu-3Ni Piston Alloy
초음파 용탕 처리 및 냉각속도가 Al-18Si-4Cu-3Ni 피스톤용 합금의 미세조직과 고온인장특성에 미치는 영향
Jea-Hee Yoon, Young-Hee Cho, Jae-Gil Jung, Jung-Moo Lee, Ik Min Park
윤재희, 조영희, 정재길, 이정무, 박익민
Korean J. Met. Mater. 2017;55(6):396-404.   Published online 2017 Jun 1
DOI: https://doi.org/10.3365/KJMM.2017.55.6.396

Abstract
The influence of ultrasonic melt treatment (UST) combined with a change in cooling rates on the microstructure and elevated temperature mechanical properties of a hypereutectic Al-18Si-4Cu-3Ni piston alloy was investigated. Microstructural observation confirmed that UST effectively refined the sizes of primary Si and intermetallic compounds (e.g. ε-Al3Ni) while promoting their..... More

       Crossref 2
The Effect of Ultrasonic Melt Treatment on the Microstructure and Mechanical Properties of Al-7Si-0.35Mg Casting Alloys
초음파 용탕 처리가 Al-7Si-0.35Mg 알루미늄 합금의 미세조직 및 기계적 특성에 미치는 영향
Soo-Bae Kim, Young-Hee Cho, Jung-Moo Lee, Jae-Gil Jung, Su Gun Lim
김수배, 조영희, 이정무, 정재길, 임수근
Korean J. Met. Mater. 2017;55(4):240-246.   Published online 2017 Apr 6
DOI: https://doi.org/10.3365/KJMM.2017.55.4.240

Abstract
The effect of ultrasonic melt treatment (UST) on the microstructure and mechanical properties of Al-7Si-0.35Mg (A356) casting alloys was investigated. The particular aim of this study was to analyze the mechanism involved in the strengthening of the A356 alloys when fabricated by UST. The UST had little effect on the..... More

       Crossref 5
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