Solidification microstructure and mechanical properties of laser melting deposited Corrosion-Resistant ultrahigh strength steel AerMet100

Acta Metall Sin

2007, Vol. 43

Issue (5): 472-476 DOI:

Research Articles

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Solidification microstructure and mechanical properties of laser melting deposited Corrosion-Resistant ultrahigh strength steel AerMet100

Min YAN;

北京航空航天大学材料学院激光材料加工制造技术实验室

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Min YAN. Solidification microstructure and mechanical properties of laser melting deposited Corrosion-Resistant ultrahigh strength steel AerMet100. Acta Metall Sin, 2007, 43(5): 472-476 .

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Abstract The corrosion-resistant ultrahigh strength steel AerMet100 was fabricated by the laser melting deposition manufacturing technology. The as-solidification microstructure and mechanical properties of the laser deposited steel were investigated. The laser as-deposited steel has a rapidly solidified “zig-zag” full cellular structure and excellent room-temperature mechanical properties. The solidification mechanism of the zig-zag full cellular structure during the laser melting deposition process was discussed and a physical model based on selective epitaxial cell growth was proposed for the formation of the zig-zag full cellular structure.

Key words: ultrahigh strength steel laser melting deposition manufacturing rapid solidification mechanical prop

Received: 26 September 2006

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2007/V43/I5/472

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