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Proceedings Paper

High temperature oxidation behavior of pre-laid laser melting 45CrNiMoY alloy steel reinforced by TA15 powder
Author(s): Mingwei Wei; Suiyuan Chen; Miao Sun; Jing Liang; Changsheng Liu; Mei Wang
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Paper Abstract

Effect of different TA15 powder additions on high temperature oxidation kinetics of pre-laid laser melting 45CrNiMoY alloy steel was studied. Thermogravimetric method was used to determine the kinetics curve of constant temperature oxidation of alloy steel sample at 700℃. The results show that bainite and acicular ferrite are the main microstructures of alloy steel after adding TA15 powder. With the increase of TA15 powder, the microstructures showed a distinct trend of refinement. The oxidation kinetics curves of alloy steels follow the linear law. The alloy steels with 1.0 wt.% TA15 powder have the best resistance to high temperature oxidation, and the oxidation rate constant is 1.48×10-4 mg2·cm-4·h-1. Particle reinforcement phase formed in alloy steel can provide pinning effect for oxide film, while micro-cracks added in excess TA15 alloy steel sample are not conducive to the improvement of high temperature oxidation resistance.

Paper Details

Date Published: 18 December 2019
PDF: 6 pages
Proc. SPIE 11333, AOPC 2019: Advanced Laser Materials and Laser Technology, 113331H (18 December 2019); doi: 10.1117/12.2548092
Show Author Affiliations
Mingwei Wei, Northeastern Univ. (China)
Suiyuan Chen, Northeastern Univ. (China)
Miao Sun, Northeastern Univ. (China)
Jing Liang, Northeastern Univ. (China)
Changsheng Liu, Northeastern Univ. (China)
Mei Wang, Shenyang Dalu Laser Technology Co., Ltd. (China)

Published in SPIE Proceedings Vol. 11333:
AOPC 2019: Advanced Laser Materials and Laser Technology
Pu Zhou; Jian Zhang; Wenxue Li; Shibin Jiang; Takunori Taira, Editor(s)

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