pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (28권5호 221-225)
Aging Behaviors of Mg-5Sn-xCa Alloys During Aging Heat Treatments
Mg-5Sn-xCa 합금의 열처리에 따른 시효특성
Joon-Sik Park, Jeong-Min Kim, Ha-Young Kim, Yang-Jin Choi, Jae-Seol Lee*, Hyun-Taek Son*
Hanbat National University, Korea Institute of Industrial Technology
The structural and hardness variations of Mg-5Sn-(1,2,3) Ca (wt%) alloys have been investigated during various aging heat treatments followed by solution heat treatment at 500 oC for 24 hrs. Maximum hardness of Hv61 has been obtained for Mg-5Sn- 3Ca alloys, when the aging treatment was performed at 200 oC for 24 hrs. The microstructures were critically changed when the content of Ca was more than 1wt% , since CaMgSn and Mg2Ca phases were mainly precipitated during aging treatments. The hardness variations with structural evolutions are discussed with respect to the aging temperatures and times.
Magnesium alloys, Aging treatment, Precipitates.
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