Effect of CaMgSn Ternary Phase on the Aging Response of Mg-Sn-Zn-Ca Alloys

Wahid, Shah Abdul; Lim, Hyun-Kyu; Jung, Young-Gil; Yang, Won-Seok; Ha, Seong-Ho; Yoon, Young-Ok; Kim, Shae K.

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자료유형: 학술저널

저자정보: Wahid, Shah Abdul (Korea University of Science and Technology) Lim, Hyun-Kyu (Korean Institute of Industrial Technology) Jung, Young-Gil (Korean Institute of Industrial Technology) Yang, Won-Seok (Korean Institute of Industrial Technology) Ha, Seong-Ho (Korean Institute of Industrial Technology) Yoon, Young-Ok (Korean Institute of Industrial Technology) Kim, Shae K. (Korea University of Science and Technology)

저널정보: 한국주조공학회 한국주조공학회지 (주조) 한국주조공학회지 제38권 제4호

발행연도: 2018.1

수록면: 75 - 81 (7page)

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This study examined the effect of the CaMgSn ternary phase on the aging response of the Mg-Sn-Zn alloy. The results revealed that the CaMgSn ternary phase formed in rod-like or needle-like shapes in Mg-3Zn-0.3Ca-xSn (x=1.5, 3, and 5 wt%) alloys and its size decreased as the Sn content increased from 1.5 wt% to 5 wt%. The Mg-3Zn-0.3Ca-5Sn alloy with a relatively fine CaMgSn phase was subjected to solution heat treatment and an aging process. Both the Mg-5Sn-3Zn-0.3Ca and Mg-5Sn-3Zn (base alloy) alloys had similar peak hardness values throughout all aging temperatures but the time-to-peak hardness in the Mg-5Sn-3Zn-0.3Ca alloy was 24-36 hours-earlier than that in the base alloy. Precipitates in the Mg-5Sn-3Zn-0.3Ca alloy were more refined than those in the Mg-5Sn-3Zn alloy and were mostly formed on basal planes. The $Mg_2Sn$ phase formed in either plate-like or rod-like shapes in the Mg-5Sn-3Zn alloy, whereas block-shaped $Mg_2Sn$ particles also formed in the Mg-5Sn-3Zn-0.3Ca alloy.

#Mg-Sn-Zn system #CaMgSn ternary phase #Precipitation hardening #Transmission electron microscopy

참고문헌 (20)

참고문헌 신청

Jiwon Jeong / 2013 / Transmission electron microscopy and thermodynamic studies of CaO-added AZ31 Mg alloys / Acta Materialia 61(9):3267~3277

Jin-Kyu LEE / 2011 / Effect of CaO composition on oxidation and burning behaviors of AM50 Mg alloy / Transactions of Nonferrous Metals Society of China 21:s23~s27

C.L. Mendis / 2006 / An enhanced age hardening response in Mg–Sn based alloys containing Zn / Materials Science and Engineering: A 435-436:163~171

Chaoqiang Liu / 2016 / Interphase boundary segregation of Zn in Mg-Sn-Zn alloys / Scripta Materialia 123:5~8

M. Bamberger / 2006 / Phase formation in Mg-Sn-Zn alloys — thermodynamic calculations vs experimental verification / Journal of Materials Science 41(10):2821~2829

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