材料工程2016，Vol.44Issue(11)：9-15,7.DOI:10.11868/j.issn.1001-4381.2016.11.002
Sn对时效态ZM61镁合金高温力学性能的影响
Effects of Sn on Elevated-temperature M echanical Properties of As-aged ZM61 Alloy
摘要
Abstract
The elevated temperature mechanical properties and fracture mechanisms of as‐aged ZM61‐xSn(x=0 ,6 ,8 ,10 ,mass fraction/% )alloys are investigated by optical microscope (OM ) ,X‐ray dif‐fraction(XRD) ,scanning electron microscope (SEM ) and high temperature tensile test .The results show that the phase compositions of ZM61‐xSn(x=6 ,8 ,10)alloys areα‐Mg ,α‐Mn ,MgZn2 and Mg2Sn phases .The Sn element can refine the microstructure ,improve the high temperature tensile strength , but deteriorate the elongation of ZM61 alloy .The ultimate tensile strength of ZM61‐xSn(x=6 ,8 ,10) alloys with tensile test at 300℃are 149 ,140 ,145MPa ,compared with ZM61 alloy which is carried out tensile test at the same temperature ,the tensile strength increased 26% ,17% and 23% ,respectively . The elongation of ZM61‐xSn(x= 0 ,6 ,8 ,10)alloys with tensile test at 300℃ are 39 .95% ,5 .65% , 7 .01% and 6 .33% .The tensile temperature exerts dominating effect for ZM 61‐xSn(x=6 ,8 ,10)al‐loys on the fracture mechanism .As tensile temperature lower than 220℃ ,the alloys show transgran‐ular fracture characteristics .The alloys show intergranular fracture characteristics when the tensile temperature is higher than 220℃ .关键词
ZM61-Sn合金/显微组织/高温拉伸性能/断裂机制Key words
ZM61-Sn alloy/microstructure/high temperature tensile property/fracture mechanism分类
矿业与冶金引用本文复制引用
唐甜,张丁非,孙静,胡光山,胥钧耀,潘复生..Sn对时效态ZM61镁合金高温力学性能的影响[J].材料工程,2016,44(11):9-15,7.基金项目
国家973重大基础研究项目（2013CB632200）；国家十二五科技支撑计划项目（2011BAE22B01-3）；科技部国际合作项目（2010DFR50010）；国家自然科学基金项目（51201190）；中央高校基本科研业务费专项资金 （）
