毛萍莉,秦佳明,刘正,王志,杨金龙

• 1:沈阳工业大学材料科学与工程学院

摘要(Abstract)：

使用"T"字形热裂模具,通过Clyne-Davies模型对EW75镁合金热裂敏感性进行了预测,并与传统的AZ91镁合金进行对比。根据测试结果对形成热裂纹时的凝固温度和凝固收缩应力进行了分析。确定了EW75镁合金在不同模具温度和浇注温度下的热裂敏感性。采用X射线衍射对EW75镁合金的相进行研究。用扫描电子显微镜对断口显微组织进行分析。结果表明,EW75镁合金的热裂敏感性大于AZ91镁合金,提高模具温度和浇注温度都会降低EW75镁合金的热裂敏感性。

关键词(KeyWords)： EW75镁合金;热裂敏感性;收缩应力;模具温度;浇注温度

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划(2013CB632203);; 辽宁省创新团队(LT2013004);; 国家自然科学基金青年科学基金(51504153);国家自然科学基金(51571145)

作者(Author): 毛萍莉,秦佳明,刘正,王志,杨金龙

DOI: 10.13289/j.issn.1009-6264.2016.06.010

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