李艳,张文达,杨晶,党惊知,刘云

• 1:中北大学材料科学与工程学院

摘要(Abstract)：

采用洛氏硬度计、扫描电镜(SEM)和能谱技术(EDS)对经单级和二级固溶处理但未时效的ZAl7Si4CuMg合金试样性能和组织进行了实验研究。结果表明:在485℃单级固溶(0.5～16 h)处理下,固溶初始阶段硬度增加速度较快,当固溶时间8 h时,硬度达到峰值(29 HRB),同铸态试样硬度相比提高了100%;在相同固溶时间(4 h)下,535℃单级固溶处理下的试样硬度低于485℃单级固溶处理下的硬度;二级固溶处理制度(485℃×6 h+535℃×4 h)获得的试样硬度最高(31.6 HRB),分别比535℃×4 h单级固溶处理试样和485℃下单级固溶处理峰值硬度高出35%和8.6%。

关键词(KeyWords)： 铝硅合金;固溶处理;析出相

Abstract:

Keywords:

基金项目(Foundation): 兵器预研基金(62202070807);; 山西省科技攻关基金(20090321075)

作者(Author): 李艳,张文达,杨晶,党惊知,刘云

DOI: 10.13289/j.issn.1009-6264.2013.04.014

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