东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (12): 1188-1191.DOI: -

• 论著 • 上一篇    下一篇

半固态A356合金触变成形件固溶组织与性能

王平;路贵民;崔建忠   

  1. 东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2003-12-15 发布日期:2013-06-24
  • 通讯作者: Wang, P.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(59974009);;

Microstructures and properties of thixoformed pieces of semi-solid A356 alloy

Wang, Ping (1); Lu, Gui-Min (1); Cui, Jian-Zhong (1)   

  1. (1) Lab. of Electromagnetic Proc., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2003-12-15 Published:2013-06-24
  • Contact: Wang, P.
  • About author:-
  • Supported by:
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摘要： 利用电阻炉加热,对半固态A356铝合金触变成形件进行固溶时效处理,并进行组织与性能的观察分析·结果表明:在535℃温度下固溶处理,随固溶时间的延长,强化相溶解充分,合金元素在晶格的分布均匀,强度得到了提高·在180℃温度下时效,强度随时效时间的延长而增大,并达到最大值;进一步延长时效时间,则合金出现软化·触变成形变形带的存在,起到了强化作用·本研究为A356合金液相线半连续铸造生产工业化提供理论指导·

关键词: 半固态, A356铝合金, 触变成形, 固溶时效, 组织, 性能

Abstract: Heated in a resistance furnace, the solution aging treatment was conducted to the specimens of thixoformed pieces of semi-solid A356 alloy, and the microstructure and properties were investigated. The results show that the strengthening phase is dissolved sufficiently, the alloy elements are distributed uniformly in lattices and the strength is improved along with the prolonging time for solution-aging treatment at 535°C. If aging at 180°C, the strength can be improved further along with the prolonging time for aging till reaching its maximum value. When exceeding the time point, the time prolongs continuously, and the alloy specimens start softening. The occurrence of the distortion zone in thixoforming process plays an important role in alloy strengthening.

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