任聪林,宽军,曹鑫,许春香,张金山

• 1:太原理工大学材料科学与工程学院
• 2:先进镁基材料山西省重点实验室

摘要(Abstract)：

采用光学显微镜、扫描电镜、能谱仪、力学性能测试和电化学测试等研究了挤压速度对铸态Mg-2Y-1Zn-0.4Zr镁合金显微组织、力学性能和腐蚀性能的影响。结果表明:挤压速度对Mg-2Y-1Zn-0.4Zr镁合金的显微组织、力学性能和腐蚀性能都有显着影响。随着挤压速度的增加,合金的平均晶粒尺寸增大,动态再结晶晶粒的体积分数先增加后减小。在60 mm/min的挤压速度下,合金的动态再结晶程度最高,并且组织中均匀分布着微米级的W-相,综合性能最佳,屈服强度、抗拉强度和伸长率分别为327 MPa、322 MPa和24.9%。

关键词(KeyWords)： Mg-2Y-1Zn-0.4Zr合金;显微组织;挤压速度;动态再结晶

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51574175,51474153)

作者(Author): 任聪林,宽军,曹鑫,许春香,张金山

DOI: 10.13289/j.issn.1009-6264.2020-0148

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