Mechanical Properties and Change in Microstructure in the Nitriding Process of Cu-Added Steels

Abstract:

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From the point of view of nitriding treatment(570°C), Cu precipitation is also occurred in the steel containing 1.3mass%Cu at this temperature. In this study, the behavior of nitriding in ultra low carbon steels containing Cr and/or Al and/or V are investigated. The following results are obtained : (1)After nitriding treatment the distribution of vickers hardness(Hv) differs in added nitriding element. (2)Profile of hardness in thickness is resulted from mainly precipitation hardening of nitride. (3)The high fatigue limit of nitrided steel is occurred by residual stress in vicinity of the surface. (4) Nitride precipitation is promoted by Cu precipitation that occurs in early stage of heat treatment.

Info:

Periodical:

Materials Science Forum (Volumes 638-642)

Main Theme:

Edited by:

T. Chandra, N. Wanderka, W. Reimers , M. Ionescu

Pages:

852-857

DOI:

10.4028/www.scientific.net/MSF.638-642.852

Citation:

K. Kawasaki et al., "Mechanical Properties and Change in Microstructure in the Nitriding Process of Cu-Added Steels", Materials Science Forum, Vols. 638-642, pp. 852-857, 2010

Online since:

January 2010

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$38.00

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