Chinese Journal of Lasers, Volume. 41, Issue 1, 103005(2014)
Microstructure and Tensile Properties of Laser Melting Deposited Ti2AlNb-Based Alloy
Thin wall samples from Ti2AlNb-based alloy are deposited on TA15 titanium alloy plate by laser melting deposition of coaxially fed Ti-22Al-25Nb metallic powders. The microstructure, phase constitution for as-deposited and heat treated materials are investigated. The tensile properties along longitude direction at room temperature and 750 ℃ high temperature are tested for materials after heat treatment. The results show that laser direct deposited Ti2AlNb-based alloy is full dense. Both as-deposited and heat treated materials are composed of B2, α2 and O phases. For the deposited Ti2AlNb-based alloy after heat treatment, the tensile strength at room temperature and 750 ℃ are 1012 MPa and 702 MPa, with elongations of 1.8% and 2.2%, respectively.
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Liu Yantao, Gong Xinyong, Liu Mingkun, Zhang Yongzhong. Microstructure and Tensile Properties of Laser Melting Deposited Ti2AlNb-Based Alloy[J]. Chinese Journal of Lasers, 2014, 41(1): 103005
Category: laser manufacturing
Received: Jul. 2, 2013
Accepted: --
Published Online: Jan. 2, 2014
The Author Email: Yantao Liu (liuyantaobj@163.com)