Preparation of Ti-Mo-Si Alloy Powders with Enhanced High-Temperature Oxidation Resistance Using Ti-10Mo Scraps

被引：7

作者：

Oh, Jung-Min ^{[1
]}

Lee, Back-Kyu ^{[1
]}

Kim, Wonbaek ^{[1
]}

Suh, Chang-Youl ^{[1
]}

Kwon, Hanjung ^{[1
]}

Lim, Jae-Won ^{[2
,3
]}

Roh, Ki-Min ^{[1
]}

机构：

[1] Korea Inst Geosci & Mineral Resources, Mineral Resources Res Div, Daejeon 305350, South Korea

[2] Chonbuk Natl Univ, Div Adv Mat Engn, Coll Engn, Jeonju 561756, South Korea

[3] Chonbuk Natl Univ, Res Ctr Adv Mat Dev, Coll Engn, Jeonju 561756, South Korea

来源：

METALS AND MATERIALS INTERNATIONAL | 2015年 / 21卷 / 03期

关键词：

Ti-Mo-Si; Recycling; Oxidation; Powder processing; Thermal analysis; MECHANICAL-PROPERTIES; GRAIN-REFINEMENT; TITANIUM; DEOXIDATION;

D O I：

10.1007/s12540-015-4154-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

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 degrees C.

引用

页码：521 / 524

页数：4

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