张焜禹,刘兴海,马自在,卫爱丽,梁伟

• 1:太原理工大学材料科学与工程学院
• 2:新材料界面科学与工程省部共建重点实验室
• 3:太原理工大学

摘要(Abstract)：

对Mg-10.83Li-2.62Al-0.34Si合金进行了均匀化和淬火处理,利用光学显微镜,扫描电镜及能谱分析,X射线衍射分析,力学性能测试等手段研究了不同热处理工艺对合金组织和力学性能的影响,探讨了析出相在合金中所起的作用。结果表明,均匀化退火实现了α-Mg的重溶和再析出,能够明显地细化α-Mg相;淬火处理可以细化晶粒,在晶界处析出Mg2Si相,并能显著提高合金的抗拉强度。经过300℃保温4 h水淬后,合金的抗拉强度达到244 MPa,相比铸态组织提高了约68%。

关键词(KeyWords)： Mg-Li-Al-Si;淬火;显微组织;抗拉强度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51175363,51274149);; 山西省青年科技研究基金(2008021033)

作者(Author): 张焜禹,刘兴海,马自在,卫爱丽,梁伟

DOI: 10.13289/j.issn.1009-6264.2014.04.018

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