Synthesis of a lightweight Ti-10Al-5Mg (wt.%) alloy by mechanical alloying followed by compaction and sintering

被引：5
作者：
Caetano, M. [1 ]
Trindade, B. [1 ]
机构：
[1] Univ Coimbra, Dept Mech, ICEMS, P-3030788 Coimbra, Portugal
来源：
JOURNAL OF MATERIALS SCIENCE | 2007年 / 42卷 / 18期
关键词：
D O I：
10.1007/s10853-007-1663-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A lightweight Ti-10Al-5Mg (wt.%) alloy was synthesized by mechanical alloying followed by cold compaction and sintering. A metastable hcp alpha-Ti(Al,Mg) solid solution was obtained after 5 h of milling. The c/a ratio of the hcp structure was found to increase with milling time. The particle size distribution of the mixture becomes broader and the dp50 value decreases as the milling time increases. The structure of the 900 and 1,100 degrees C sintered samples consist of an alpha-Ti(Al) solid solution matrix with alpha(2)-Ti3Al and MgO precipitates. Values of 11 and 188 GPa were obtained for the Hardness and Young's modulus of 1,100 degrees C sintered sample, respectively, confirming the strength improvement of the Ti-based alloy.
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收藏
页码：7684 / 7689
页数：6
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