Effects of DC plasma nitriding parameters on microstructure and properties of 304L stainless steel

Journal Article · Sun Mar 15 04:00:00 EDT 2009 · Materials Characterization

DOI:https://doi.org/10.1016/j.matchar.2008.08.011· OSTI ID:21192604

Jun, Wang ^[1]; Qian, Peng ^[2]; Hongyuan, Fan ^[1]; Ying, Wang ^[2]; Guijiang, Li; Baoluo, Shen ^[1]

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1. School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065 (China)
2. Nuclear Power Institute of China, Chengdu 610041 (China)

A wear-resistant nitrided layer was formed on a 304L austenitic stainless steel substrate by DC plasma nitriding. Effects of DC plasma nitriding parameters on the structural phases, micro-hardness and dry-sliding wear behavior of the nitrided layer were investigated by optical microscopy, X-ray diffraction, scanning electron microscopy, micro-hardness testing and ring-on-block wear testing. The results show that the highest surface hardness over a case depth of about 10 {mu}m is obtained after nitriding at 460 deg. C. XRD indicated a single expanded austenite phase and a single CrN nitride phase were formed at 350 deg. C and 480 deg. C, respectively. In addition, the S-phase layers formed on the samples provided the best dry-sliding wear resistance under the ring-on-block contact configuration test.

• OSTI ID: 21192604
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: 3 Vol. 60; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITE
CHROMIUM NITRIDES
HARDNESS
LAYERS
MICROSTRUCTURE
OPTICAL MICROSCOPY
PLASMA
SCANNING ELECTRON MICROSCOPY
STAINLESS STEEL-304L
SURFACES
TEMPERATURE RANGE 0400-1000 K
WEAR
WEAR RESISTANCE
X-RAY DIFFRACTION