Preparation of Ti-Mo-Si alloy powders with enhanced high-temperature oxidation resistance using Ti-10Mo scraps

被引：0
|
作者：
Jung-Min Oh
Back-Kyu Lee
Wonbaek Kim
Chang-Youl Suh
Hanjung Kwon
Jae-Won Lim
Ki-Min Roh
机构：
[1] Korea Institute of Geoscience and Mineral Resources,Mineral Resources Research Division
[2] Chonbuk National University,Division of Advanced Materials Engineering and Research Center for Advanced Materials Development, College of Engineering
来源：
Metals and Materials International | 2015年 / 21卷
关键词：
Ti-Mo-Si; Recycling; Oxidation; Powder processing; Thermal analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
To recycle Ti alloy scraps and enhance the functionality of the recycled scraps, we manufactured low-oxygen contented Ti-Mo-Si powders using two types of ternary Ti alloy ingots which were prepared by vacuum arc melting of Ti-Mo scrap with different amounts of Si. The weight ratio of Ti-Mo scrap was Ti:Mo=9:1 and Si contents in two alloy ingots were 1 and 2 wt%. The alloy powders were prepared by the hydrogenation-dehydrogenation process and the oxygen atoms were removed by the deoxidation in solid state method. We confirmed that the deoxidation process effectively reduced the oxygen content of Ti-Mo-Si alloy powder from 3,350 ppm to 1,700 ppm. In addition, we confirmed that the high-temperature oxidation resistance was increased by adding Si to Ti-Mo alloys. Thermal gravimetric analysis showed that the weight gain of powders by the oxidation was reduced from 8.85% for Ti-Mo to 7.5% for Ti-Mo-Si at 1,500 °C.
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页码：521 / 524
页数：3
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