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论文类型：期刊论文

发表时间：2016-12-01

发表刊物：JOURNAL OF APPLIED CRYSTALLOGRAPHY

收录刊物：SCIE、EI、Scopus

卷号：49

期号：6

页面范围：1967-1971

ISSN号：1600-5767

关键字：nitriding; stacking faults; microstructure; austenitic steel; modelling

摘要：The nitrogen-supersaturated phase produced by low-temperature plasma-assisted nitriding of austenitic stainless steel usually contains a high density of stacking faults. However, the stacking fault density observed in previous studies was considerably lower than that determined by fitting the X-ray diffraction pattern. In this work, it has been confirmed by high-resolution transmission electron microscopy that the strip-shaped regions of about 3-25 nm in width observed at relatively low magnification essentially consist of a series of stacking faults on every second {111} atomic plane. A microstructure model of the clustered stacking faults embedded in a face-centred cubic structure was built for these regions. The simulated X-ray diffraction and transmission electron microscopy results based on this model are consistent with the observations.