摘要
在镁合金中加入合金元素Sn,利用光学显微镜、扫描电子显微镜、X射线衍射仪和万能试验机研究Sn的加入对镁合金显微组织和力学性能的影响。结果表明,Sn元素的加入可使镁合金组织细化,并有新相Mg2Sn生成。经390℃×18 h固溶处理或390℃×18 h固溶+200℃×12 h时效处理后,镁合金中的第二相粒子增多。固溶处理后,合金抗拉强度达到262.3 MPa,屈服强度达到192.6 MPa,伸长率为10.7%。
The effects of stannum on microstructure and properies of magnesium alloy were studied by OM, SEM, XRD, and universal testing machines. The results show that the addition of Sn can refine the microstructure of magnesium alloy, and Mg2Sn generates as a new phase. The second phase in the alloy particles increase after solid solution treatment at 390 ℃ for 18 h or after solid solution treatment at 390 ℃ for 18 h and aging treatment at 200 ℃ for 12 h. After solid solution treatment, the tensile strength and yield strength of the alloy are 262.3 MPa and 192.6 MPa, respectively, and the elongation is 10.7%.
出处
《铸造技术》
CAS
北大核心
2014年第8期1669-1671,共3页
Foundry Technology
关键词
镁合金
SN
显微组织
拉伸性能
magnesium alloy
Sn
microstructure
tensile property
