Study on austenitic nitrocarburizing without compound layer
- Univ. of Petroleum, Dongying, Shandong (China)
- Shandong Polytechnic Univ., Jinan, Shandong (China)
This paper presents an advanced austenitic nitrocarburizing process. Medium-carbon steel was used in austenitic nitrocarburizing with methanol/ammonia atmospheres. A particular hardened case without compound layer was obtained at 680 C processing temperature and a moderate nitrogen potential level and for steel 45 nitrocarburized, there is a fine-grain region beneath the austenite case. The forming and developing mechanism of the fine-grain region was analyzed and the microhardness profiles of the layer before and after ageing were determined. Having the advantages of shorter processing time and a superior hardened case, this treatment is expected to supersede the conventional ferritic nitrocarburizing process in many wear resistance applications.
- OSTI ID:
- 389775
- Report Number(s):
- CONF-951222--; ISBN 0-87170-561-3
- Country of Publication:
- United States
- Language:
- English
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