吴敌,齐锦刚,李扬,赵作福,王建中

• 1:辽宁工业大学材料科学与工程学院
• 2:北京科技大学冶金与生态工程学院

摘要(Abstract)：

研究了不同变质元素(0.2%Sr、0.5%La和0.5%Nd)对Al-18%Mg2Si合金凝固组织及性能的影响。探讨了变质元素对Mg2Si形核的影响机理。结果表明:0.2%Sr和0.5%Nd对Mg2Si相的变质效果最佳,力学性能明显提升。基于经典凝固形核理论,建立了变质元素吸附形核模型,该模型解释了变质元素吸附毒化作用呈现峰值的特点,并可用于计算该峰值处变质元素的最优覆盖率。

关键词(KeyWords)： 变质元素;Al-Mg2Si合金;结晶行为;吸附

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51354001);; 辽宁省高等学校创新团队(LT2013014)

作者(Author): 吴敌,齐锦刚,李扬,赵作福,王建中

DOI: 10.13289/j.issn.1009-6264.2014.s2.004

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