薛寒松,陈扬扬,黄杰,李信宇,饶劲松,潘复生.热处理对超声挤压态Mg-6Zn-0.5Y-2Sn合金微观组织和拉伸性能的影响[J].稀有金属材料与工程,2019,48(7):2049~2055.[Xue hansong,Chen yangyang,Huang jie,Li xinyu,Rao jingsong,Pan fusheng.Effect of heat treatment on the microstructural and tensile properties of an ultrasonically treated extruded Mg-6Zn-0.5Y-2Sn alloy[J].Rare Metal Materials and Engineering,2019,48(7):2049~2055.]
热处理对超声挤压态Mg-6Zn-0.5Y-2Sn合金微观组织和拉伸性能的影响
投稿时间:2018-03-09  修订日期:2018-05-15
中文关键词:  Mg-6Zn-0.5Y-2Sn合金,超声处理,热处理,屈服强度,拉伸性能
基金项目:
中文摘要:
      本文研究了热处理对超声挤压态Mg-6Zn-0.5Y-2Sn合金(实验合金)微观组织和拉伸性能的影响。结果表明,经过时效处理(T5)和固溶加时效处理(T6),实验合金的晶粒尺寸变得更加均匀,MgSnY和Mg2Sn第二相分布更加弥散,且数量有所增加。T5和T6处理均提高了实验合金的屈服强度,其中T5处理的提高作用更加明显。经过T5处理之后,实验合金的屈服强度从165MPa增加到了269MPa,增长率达到63.1%。MgSnY和Mg2Sn第二相共同的析出强化作用,是热处理态实验合金屈服强度提高的主要原因。此外,相对于T6处理,T5处理更加有效地提升了实验合金的综合力学性能。
Effect of heat treatment on the microstructural and tensile properties of an ultrasonically treated extruded Mg-6Zn-0.5Y-2Sn alloy
英文关键词:Mg-6Zn-0.5Y-2Sn alloy, ultrasonically treated, heat treatment, yield strength, tensile properties
英文摘要:
      The effect of heat treatment on the microstructural and tensile properties of an ultrasonically treated extruded Mg-6Zn-0.5Y-2Sn alloy was investigated. The results showed that after both the aging treatment and “solid solution and aging” treatment, the grain size became more uniform. The MgSnY and Mg2Sn phases were much more dispersed and increased in amount. In addition, both the aging and “solid solution and aging” treatments improved the yield strength of the test alloys. Specifically, the aging treatment significantly improved the yield strength from 165 MPa to 269 MPa, which is an increase of 63.1 %. The precipitation strengthening, which is derived from the collective strengthening effect of the MgSnY and Mg2Sn phases, was the optimal factor for improving the yield strength in the test alloys with heat treatment. Moreover, the aging treatment more effectively improved the comprehensive tensile properties of test alloy compared with the “solid solution and aging” treatment. The mechanisms for the experimental observations were also discussed in this research.
作者单位E-mail
薛寒松 重庆大学 hsxue@cqu.edu.cn 
陈扬扬 重庆大学  
黄杰 重庆大学  
李信宇 重庆大学  
饶劲松 重庆大学  
潘复生 重庆大学  
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