SPALLING MECHANISM OF NITRIDED LAYER OF AUSTENITIC STEEL 4Cr14Ni14W2Mo

Acta Metall Sin

1989, Vol. 25

Issue (2): 71-73 DOI:

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SPALLING MECHANISM OF NITRIDED LAYER OF AUSTENITIC STEEL 4Cr14Ni14W2Mo

SUN Xudong;LI Jian Northeast University of Technology

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SUN Xudong;LI Jian Northeast University of Technology. SPALLING MECHANISM OF NITRIDED LAYER OF AUSTENITIC STEEL 4Cr14Ni14W2Mo. Acta Metall Sin, 1989, 25(2): 71-73.

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Abstract The tendency of spalling of the nitrided layer of the hot rolled austenitic steel 4Cr-14Ni14W2Mo exhibits close relation to the nitrided surface orientation relative to the rolled steelrod It is found that the dislocations in the imperfactly recrystalized steel align as parallel dislo-cation walls in macroscopic extent, and the thickness of "white sublayer" in the nitrided layeris much larger at the surface which is parallel to the dislocation walls. At such surface spallingof the nitrided layer happens often.

Key words: nitriding spalling heat resistant steel

Received: 18 February 1989

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1989/V25/I2/71

1 李见,孙旭东,李再先,李春生.金属学报,1988;24:A47

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