【摘 要】
：
采用真空感应熔炼方法制备LZ92（Mg-9Li-2Zn）双相镁锂合金,同时对合金进行热挤压试验,挤压比分别为10、20、30。采用光学显微镜（OM）、扫描电子显微镜（SEM）、X射线衍射（XRD）分析及硬度
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采用真空感应熔炼方法制备LZ92（Mg-9Li-2Zn）双相镁锂合金,同时对合金进行热挤压试验,挤压比分别为10、20、30。采用光学显微镜（OM）、扫描电子显微镜（SEM）、X射线衍射（XRD）分析及硬度测试、拉伸测试等手段研究不同挤压比下LZ92双相镁锂合金的组织和性能。结果表明挤压态LZ92镁锂合金具有优异的力学性能;随着挤压比的增加,合金再结晶程度增加,晶粒细化程度更加明显,断口形貌中韧窝数量越多且分布均匀,抗拉强度逐渐增大至203.1 MPa,较铸态提高了76%。强度的提高主要是由于加工硬化和晶
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