The Nonferrous Metals Society of China

Transactions of Nonferrous Metals Society of China >

2022 , Vol. 32 >Issue 4: 1351 - 1361

DOI: https://doi.org/10.1016/S1003-6326(22)65858-8

Mining, Minerals Processing and Metallurgical Engineering

Preparation of low-oxygen-containing Ti-48Al-2Cr-2Nb alloy powder by direct reduction of oxides

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  • Xue-yi GUO, Zhao-wang DONG, Yang XIA, Pei-dong LIU, Han-ning LIU, Qing-hua TIAN
School of Metallurgy and Environment, Central South University, Changsha 410083, China

Online published: 2022-04-25

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Abstract

A high-purity Ti-48Al-2Nb-2Cr alloy powder with an oxygen content as low as 0.0572 wt.% and a particle size of <150 μm was produced from a mixture of TiO2, Al2O3, Nb2O5, and Cr2O3 powders through reduction with magnesium and deoxidation with calcium. The phase and composition of the products were analyzed. The final product mainly included γ-TiAl and minor α2-Ti3Al phases, and Ti, Al, Cr, and Nb were homogenously distributed in the powder with a mole ratio of 49.73:43.51:2.05:1.98. The reduction and deoxidation mechanisms were investigated by thermodynamic modeling using the HSC Chemistry software and Pandat software based on the Ti alloy database.

Cite this article

Xue-yiGUO,Zhao-wangDONG,YangXIA,Pei-dongLIU,Han-ningLIU,Qing-huaTIAN . Preparation of low-oxygen-containing Ti-48Al-2Cr-2Nb alloy powder by direct reduction of oxides[J]. Transactions of Nonferrous Metals Society of China, 2022 , 32(4) : 1351 -1361 . DOI: 10.1016/S1003-6326(22)65858-8

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