摘要
采用组织分析和拉伸试验,研究了Mg-5Y-3Sm-0.8Ca-0.5Sb(%,质量分数)合金的显微组织和力学性能。结果表明,铸态Mg-5Y-3Sm-0.8Ca-0.5Sb合金的显微组织由α-Mg基体和Mg24Y5、Mg41Sm5、Mg2Ca、Mg3Sb2相组成。时效态Mg-5Y-3Sm-0.8Ca-0.5Sb合金具有良好的室温及高温力学性能,在室温下的抗拉强度为266 MPa,200℃时为244 MPa,300℃时仍高达208 MPa,其抗拉强度稳定性优于发展最为成功的商用耐热镁合金WE43。
The microstructure and mechanical properties of Mg-5Y-3Sm-0. 8Ca-0. 5Sb alloy were investigated by microstructure analysis and tensile tests. The results showed that the microstructure of as-cast Mg-5Y-3Sm-0. 8Ca-0. 5Sb alloy consists of α-Mg matrix and Mg24Y5,Mg41Sm5,Mg2 Ca and Mg3Sb2. The aged Mg-5Y-3Sm-0. 8Ca-0. 5Sb alloy has good mechanical properties at room and high temperature. Its ultimate tensile strength is 266 MPa,244 MPa and 208 MPa at room temperature,200 ℃ and 300 ℃ respectively. The stability of its ultimate tensile strength is superior to that of heat resistant magnesium alloy WE43 developed most successfully.
出处
《稀土》
EI
CAS
CSCD
北大核心
2015年第5期97-101,共5页
Chinese Rare Earths
基金
国家自然科学基金项目(NSFC-河南人才培养联合基金
U1404501)
国家自然科学基金项目(51171059)
河南省高校科技创新团队支持计划(2012IRTSTHN008)
河南省基础与前沿技术研究计划(092300410184)
关键词
稀土
镁合金
组织
力学性能
rare earth
magnesium alloy
microstructure
mechanical properties
