Effects of Ti and Mg on Structure and Properties of Al Matrix Composites

Wang Lianlian; Xu Daobing; Long Wei; Zhou Xiaoping

doi:10.15980/j.tzzz.2018.11.020

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Effects of Ti and Mg on Structure and Properties of Al Matrix Composites
Vol. 38, Issue 11, Pages: 1238-1241(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.11.020

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[1]王莲莲,徐道兵,龙威,周小平.Ti和Mg对Al基复合材料组织性能的影响[J].特种铸造及有色合金,2018,38(11):1238-1241.

Wang Lianlian, Xu Daobing, Long Wei, et al. Effects of Ti and Mg on Structure and Properties of Al Matrix Composites. [J]. Special Casting & Nonferrous Alloys 38(11):1238-1241(2018)
[1]王莲莲,徐道兵,龙威,周小平.Ti和Mg对Al基复合材料组织性能的影响[J].特种铸造及有色合金,2018,38(11):1238-1241. DOI： 10.15980/j.tzzz.2018.11.020.

Wang Lianlian, Xu Daobing, Long Wei, et al. Effects of Ti and Mg on Structure and Properties of Al Matrix Composites. [J]. Special Casting & Nonferrous Alloys 38(11):1238-1241(2018) DOI： 10.15980/j.tzzz.2018.11.020.

摘要

采用粉末冶金法制备了不同成分的Al基复合材料

经机械混合后

以一定的压力冷压成型

然后在氩气保护环境下以一定的升温工艺在550℃下进行烧结

保温30min

随炉冷却。结果发现Al-Mg系复合材料孔隙率较高;Al-Ti系复合材料中Al基体与Ti颗粒为物理结合;Al-Mg-Ti系复合材料的致密性较Al-Mg系有较大改善

且有三元相Al

生成

Mg降低了Al-Ti体系的相变温度

且Mg的增加有利于Al-Ti反应进一步发生

最终形成了三元相。

Abstract

Al matrix composites with different composition were prepared by powder metallurgy.After mechanical mixing

the powder was formed by cold pressing at a certain pressure

then sintered at 550℃ in argon atmosphere and holding for 30 minutes and then cooling with the furnace.It is found that the porosity of Al-Mg composites is higher

and the Al matrix and Ti particles in Al-Ti composites are physically combined

and the compactness of the Al-Mg-Ti composites is superior to that of the Al-Mg composites.In addition

a ternary phase Al

can be observed.The presence of Mg can reduce the phase transition temperature of Al-Ti system

and the increase of Mg element is conducive to the further occurrence of Al-Ti reaction and finally the generation of ternary phase.