Browse > Article

A Study on the High Temperature Gas Nitriding Heat Treatment of STS 347 and STS 310S Austenitic Stainless Steel  

Yoo, Dae Kyoung (Steel Making Department, INI Steel Company)
Kong, Jung Hyun (Department of Materials Science and Engineering, Dong-A University)
Lee, Hea Joeng (Department of Materials Science and Engineering, Dong-A University)
Sung, Jang Hyun (Department of Materials Science and Engineering, Dong-A University)
Lee, Hae Woo (Department of Materials Science and Engineering, Dong-A University)
Publication Information
Korean Journal of Metals and Materials / v.46, no.11, 2008 , pp. 708-712 More about this Journal
Abstract
The influence of high temperature gas nitriding (HTGN) in STS347 and STS310S steels was experimentally investigated. The HTGN was carried out at $1,050^{\circ}C{\sim}1,150^{\circ}C$ for 10 hrs in a gaseous atmosphere containing $1kg/mm^2$ of nitrogen. After HTGN, fine precipitates of $Cr_2N$ and NbN appeared in austenite on the surface of STS 347, while nitrogen pearlite, which was layeredof $Cr_2N$ and austenite alternatively, appeared in austenite on the surface of STS 310S. The surface hardness of HTGN-treated, STS 347 and STS 310S specimens was 250~360 Hv and 270~400 Hv, respectively, depending on the temperature of HTGN. The nitrogen content was analyzed 1.4 wt% and 1.6 wt% at the surface layer of STS 347 and STS 310S steels, respectively. In addition, an improvement in the corrosion resistance of HTGN treated specimens was observed.
Keywords
HTGN (High Temperature Gas Nitriding); STS 347; STS310S; $Cr_2N$ nitride;
Citations & Related Records

Times Cited By SCOPUS : 1
연도 인용수 순위
1 D. K. Yoo, J. U. Park, D. W. Joo, K. D. Kim, J. H. Sung : J. Kor Soc Heat Treatment 13, 151157 (2000)
2 Valentin G. Gavrijuk, Scripta Materialia 52, 951 (2005)   DOI   ScienceOn
3 H. Berns and Sibine Siebert, ISIJ International 36, 927 (1996)   DOI
4 A. A. Ono : Master Thesis, p.111, Escola Politecnica-Univ. of Sao Paulo, Sao Paulo (1995)
5 D. K. Yoo, J. H. Sung, J. Korean Society for Heat Treatment 19, 39 (2006)
6 Y. Sawaragi, H. Teranishi, H. Makiura, M. Miura and M. Kubota, Sumitomo Metals 37, 166 (1985)
7 V. G. Gavnrijuk and H. Berns, High Nitrogen Steels, Springer-Verlag, Berlin-New York (1999)
8 M. L. G. Byrnes, M. Grujicic and W. S. Owen, Acta Metal. 25, 1853 (1987)
9 H. Berns, R. L. Juse, J. W. Bouwman and B. Edenhofer, Heat Teatment of Metals 2, 39 (2000)
10 V. G. Gavnrijuk and H. Berns, High Nitrogen Steels Springer-Verlag, Berlin-New York (1999)
11 H. Hanninen, Material Science Forum 318-320, 479-488 (1999)
12 V. G. Garvriljuk, H. Berns, High Nitrogen steels, p.215-218 (1999)
13 F. B. Pickering, HNS88, Lille, France, May 1988, The Institute of Metals, London, 10 (1989)
14 A. Gocmen, P. Ernst, and P. Holomon, Proc. 5th International Conference on HNS, Vol 1, pp215-225, Espoo, Finland (1998)
15 D. K. Yoo, D. W. Joo, Insoo Kim, C. Y. Kang, and J. H. Sung , J. Korean Society for Heat Treatment 15, 5764. (2002)
16 H. Berns, Materials Australia, 33, 21 (2001)