朱翔鹰,李宏宝,涂浩,刘亚,王建华,苏旭平

• 1:常州大学材料科学与工程学院
• 2:常州大学江苏省材料表面科学与技术重点实验室
• 3:常州大学江苏省光伏科学与工程协同创新中心

摘要(Abstract)：

采用Al-3P和0.2 mass%Al-5Ti对共晶铝硅合金进行复合变质处理,并对复合变质前后共晶铝硅合金的显微组织和力学性能进行了分析和测试。结果表明,Al-3P加入量和变质处理温度对共晶铝硅合金的显微组织和力学性能有明显影响。在700℃下采用0.6 mass%Al-3P和0.2 mass%Al-5Ti对共晶铝硅合金进行复合变质处理时,α-Al相体积分数可达到55%,初生α-Al相呈细小枝晶状,硅相呈细小颗粒状。与0.2 mass%Al-5Ti变质处理合金相比,复合变质处理后共晶铝硅合金的抗拉强度和伸长率分别提高28.3%和56.7%,综合力学性能得到明显提高,且其拉伸断口呈现明显的韧性断裂。

关键词(KeyWords)： 共晶铝硅合金;复合变质处理;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51571039);; 江苏省研究生科研与实践创新计划项目(SJCX19_0627)

作者(Author): 朱翔鹰,李宏宝,涂浩,刘亚,王建华,苏旭平

DOI: 10.13289/j.issn.1009-6264.2020-0504

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