SURFACE MODIFICATION OF TiAl INTERMETALLIC ALLOYS BY LASER GAS ALLOYING

Acta Metall Sin

1997, Vol. 33

Issue (9): 917-920 DOI:

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SURFACE MODIFICATION OF TiAl INTERMETALLIC ALLOYS BY LASER GAS ALLOYING

WANG Huaming(H.M.Wang)(Beijing University of Aeronautics and Astronautics; Beijing 100083)

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WANG Huaming(H.M.Wang)(Beijing University of Aeronautics and Astronautics; Beijing 100083). SURFACE MODIFICATION OF TiAl INTERMETALLIC ALLOYS BY LASER GAS ALLOYING. Acta Metall Sin, 1997, 33(9): 917-920.

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Abstract Laser gas alloying with nitrogen was employed to improve the wear resistance of TiAl intermetallic alloys. The rapidly solidified in situ wear resistant composite materials reinforced by hard TiN were successfully fabricated in the laser modified surface layer. The microstructure and properties of the laser modified surface are controllable by the laser processing parameters. Results of the research demonstrate preliminarily that laser gas alloying with nitrogen is a promising new surface modification technique for improving the wear resistance of TiAl intermetallic alloys.

Key words: TiAl intermetallic alloy TiN laser gas alloying wear resistance

Received: 18 September 1997

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1997/V33/I9/917

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