索江龙,李元东,何明涛,胡韶华,陈体军,马颖

• 1:兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室
• 2:兰州理工大学有色金属合金省部共建教育部重点实验室

摘要(Abstract)：

采用光学显微镜(OM)、扫描电镜(SEM)、X射线衍射仪(XRD),研究了固溶处理对流变压铸2024变形铝合金组织及硬度的影响。结果表明,流变压铸成形的2024变形铝合金在495℃固溶处理12 h后,共晶相θ(CuAl2)相和S(CuAl2Mg)相逐渐固溶进入α-Al基体内部,使得合金基体中的过饱和Cu、Mg合金元素的含量增多,对合金起到良好的固溶强化作用。而且,随着固溶时间的增加,流变压铸成形2024的组织中的初生颗粒与二次凝固区颗粒出现合并长大现象,其它们的长大速率都随固溶时间的延长而降低。

关键词(KeyWords)： 2024变形铝合金;半固态;流变压铸;固溶

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(50964010,51064017);; 甘肃省高等学校基本科研业务费(1201ZTC056)

作者(Author): 索江龙,李元东,何明涛,胡韶华,陈体军,马颖

DOI: 10.13289/j.issn.1009-6264.2013.09.015

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