吴亮,金青林,蒋业华

• 1:昆明理工大学材料科学与工程学院

摘要(Abstract)：

研究了不同铁相对铝硅合金高温拉伸性能及其断面显微组织、形貌的影响。结果表明:当合金中铁相形貌呈针状时,合金高温拉伸强度较好,但塑性较差;当合金中铁相形貌呈鱼骨状时,合金高温拉伸强度低于前者,但塑性较好。通过断面显微组织及断口形貌分析可知,含鱼骨状铁相的试样断口为典型塑性断裂特征,而含针状铁相的试样断口为典型脆性断裂特征。裂纹扩展均为沿晶断裂方式。

关键词(KeyWords)： 铝硅合金;铁相;高温拉伸;断面显微组织;断口形貌

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 吴亮,金青林,蒋业华

DOI: 10.13289/j.issn.1009-6264.2013.04.012

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