Acta Metallurgica Sinica (English Letters) ›› 2010, Vol. 23 ›› Issue (2): 99-105.DOI: 10.11890/1006-7191-102-99

• 研究论文 • 上一篇    下一篇

锻造温度对SiCp/AZ91镁基复合材料组织与性能的影响

邓坤坤1;吴昆2   

  1. 1. 哈尔滨工业大学材料学院
    2.
  • 收稿日期:2009-04-13 修回日期:2009-07-06 出版日期:2010-04-25 发布日期:2010-04-08
  • 通讯作者: 吴昆

Effect of forging temperature on the microstructures and mechanical properties of the SiCp/AZ91 magnesium matrix composite

Kun WU, Kunkun DENG, Hai CHANG, Yewei WU, Xiaoshi HU, Mingyi ZHENG   

  1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2009-04-13 Revised:2009-07-06 Online:2010-04-25 Published:2010-04-08
  • Contact: Kunkun DENG

摘要:

通过搅拌铸造法制备出了体积分数为10%的SiCp/AZ91镁基复合材料,并分别在320、370和420℃三种温度下对复合材料进行锻造。利用X-射线(XRD),扫描电子显微镜(SEM)和金相显微镜(OM)研究了锻后复合材料的组织,通过室温拉伸测得了复合材料在三种锻造温度下锻后的力学性能。研究结果表明,通过锻造可以有效的改善基体中的颗粒分布,消除铸态复合材料中的颗粒团簇现象。每个锻造温度下,都会有典型的组织特征,不同的组织对应不同的力学性能。

关键词: Magnesium matrix composite, Forging, Mechanical properties

Abstract:

In this paper, 10 vol. pct SiCp/AZ91 magnesium matrix composite was fabricated by stir casting technology. The ingots were forged at temperatures of 320, 370 and 420 ℃, respectively. XRD, OM and SEM were used to characterize microstructure of the composites. It was shown that the clusters of particles in the as-cast composite were largely eliminated, and that the tensile strength was improved obviously.

Key words: Magnesium matrix composite, Forging, Mechanical properties