刘慧敏,张复懿,吴宏明

• 1:内蒙古工业大学材料科学与工程学院
• 2:内蒙古第一机械制造(集团)公司

摘要(Abstract)：

采用原位反应近液相线铸造方法制备含有3.6 wt%原位Al2O3颗粒的Al-Cu铝合金,在其固液两相区的580、590、600和610℃进行二次加热保温实验,淬火固定其半固态组织后,通过光镜观察合金的晶粒长大规律,研究其晶粒长大行为,分析原位Al2 O3颗粒对合金二次加热组织的影响。结果表明,原位Al2 O3颗粒对Al-Cu合金的铸态组织没有明显的细化和球化作用,但是在合金的二次加热过程中对晶粒长大行为具有抑制作用,与基体合金相比,在相同的二次加热条件下晶粒尺寸减小30～40μm。

关键词(KeyWords)： Al-Cu合金;二次加热;晶粒长大;原位Al2O3颗粒

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(50661003)

作者(Author): 刘慧敏,张复懿,吴宏明

DOI: 10.13289/j.issn.1009-6264.2011.04.012

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