Mg-Al-Ca合金研究现状  

Research Status of Mg-Al-Ca Alloy

作　　者：杨栋[1] 张立 高宇龙[1] YANG Dong;ZHANG Li;GAO Yulong(Teaching Center of Experiment and Practice,Shanxi Datong University,Datong 037003)

机构地区：[1]山西大同大学教学实验与实训中心,大同037003

出　　处：《现代制造技术与装备》2021年第12期4-7,共4页Modern Manufacturing Technology and Equipment

基　　金：山西大同大学校级青年科学研究项目(2018Q11);山西大同大学青年科研基金项目(2021Q2)。

摘　　要：Mg-Al-Ca合金由于其较好的阻燃性能和温抗蠕变性能而具有广阔的应用前景。通过介绍近几年的相关研究,为今后镁合金的相关研究与开发提供了参考与借鉴。主要结论如下:Mg-Al-Ca合金中的金属间化合物与Al、Ca元素含量和Ca/Al比息息相关;铸态Mg-Al-Ca合金显微组织中的第二相大多以沿晶分布为主,挤压态合金中的第二相则沿挤压方向分布;相对于其他非稀土镁合金,Mg-Al-Ca合金的强度比较优异,300℃挤压Mg-5Al-3Ca-0.3Mn合金的屈服强度和极限抗拉强度分别达到了420 MPa和451 MPa,延伸率为4.1%;未来的研究重点将是Mg-Al-Ca合金的强塑性协调问题,以获得更加优异的综合性能。Mg-Al-Ca alloy has great application prospects due to its better flame retardant performance and temperature creep resistance.This article mainly introduces the related research in recent years in order to provide reference and reference for the related research and development of magnesium alloy in the future.The main conclusions are as follows:The intermetallic compounds in Mg-Al-Ca alloys are closely related to the content of Al and Ca elements and the Ca/Al ratio.Most of the second phase in the microstructure of the as-cast Mg-Al-Ca alloy is distributed along the crystal grain,while the second phase in the extruded alloy is distributed along the extrusion direction.Compared with other non-rare earth magnesium alloys,the strength of Mg-Al-Ca alloy is superior.The yield strength and ultimate tensile strength of Mg-5Al-3Ca-0.3Mn alloy extruded at 300℃reach 420 MPa and 451 MPa,and the elongation is 4.1%.The focus of future research will be on the coordination of strong plasticity of Mg-Al-Ca alloys in order to obtain more excellent comprehensive properties.

关 键 词：Mg-Al-Ca合金 研究现状 显微组织 力学性能 

分 类 号：TG146.22[一般工业技术—材料科学与工程]