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Enhancing mechanical properties of Mg-Gd-Y-Zn alloys via microalloying with Ce and La

Zhaobin Zhang, Jonghyun Kim, Hongxin Liao, Ki Buem Kim, Taekjib Choi, Taekyung Lee, Fusheng Pan
김기범, 최택집, 이태경,

Korean J. Met. Mater. 2022;60(9):654-667. Published online 2022 Aug 30
DOI: https://doi.org/10.3365/KJMM.2022.60.9.654

Abstract
This study investigated the microstructure and mechanical properties of Mg-1Gd-1Y-1Zn (at.%) alloys containing designed amounts of Ce or La. The Mg₅(Gd,Zn) phase formed in the as-cast Mg-Gd-Y-Zn-Ce/La alloys and disappeared after a homogenization treatment at 500°C for 24 h. The addition of Ce and La resulted in the formation of..... More

Investigation of Color Change in Cu-Zn Alloys by Reflectivity and Color Difference Analysis
반사도와 색 차 분석을 이용한 Cu-Zn 합금의 색 변화 고찰

Yeon Beom Jeong, Sung Hwan Hong, Hae Jin Park, Young Seok Kim, Jeong Tae Kim, Hoo Dam Lee, Yun Jung Hwang, Young Hoon Lee, Ki Buem Kim
정연범, 홍성환, 박혜진, 김영석, 김정태, 이후담, 황윤중, 이영훈, 김기범

Korean J. Met. Mater. 2018;56(3):171-176. Published online 2018 Mar 6
DOI: https://doi.org/10.3365/KJMM.2018.56.3.171

Abstract
The change in reflectivity of Cu-Zn alloys was investigated with the modulation of Zn content. The reflectivity of the prepared alloys were compared with pure copper and divided into wavelength regions corresponding to blue, green, yellow, and red colors. As the amounts of Zn increased, the difference in reflectivity of..... More

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