摘要
以AZ61镁合金为研究对象,添加K2TiF6与Mg发生原位自生反应生成Ti,采用OM、SEM观察和XRD物相分析以及拉伸性能测试等分析方法,研究了微量Ti对AZ61镁合金组织和性能的影响。研究发现,随着Ti含量的增加,AZ61合金晶粒尺寸先减小后增大,当Ti含量为1. 5%时,细化效果最佳,铸态晶粒尺寸为41μm。铸态和热处理态试样的抗拉强度和伸长率先增大后减小,最高抗拉强度分别达到201. 5 MPa和223. 5 MPa。
The Ti element was introduced into the AZ61 by adding K2TiF6. The microstructure and mechanical properties of AZ61 with trace Ti were studied by using XRD,OM,SEM,EDS and mechanical properties testing. The results show that with the increase of Ti content,the grain size of AZ61 alloy decreases first and then increases. When the Ti content is 1. 5%,the refining effect is the best,and the as-cast grain size is 41 μm. The mechanical properties of the as-cast and heat-treated states first increase and then decrease,and the tensile strength reaches 201. 5 MPa and 223. 5 MPa,respectively.
作者
阎泽南
王丽萍
冯义成
赵丽丽
赵思聪
郭二军
Yan Zenan;Wang Liping;Feng Yicheng;Zhao Lili;Zhao Sicong;Guo Erjun(School of Materials Science and Engineering,Harbin University of Science and Technology,Harbin Heilongjiang 150040,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2020年第1期143-149,共7页
Heat Treatment of Metals
基金
黑龙江省自然科学基金(E2018045)
