期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 475, 期 1-2, 页码 202-206出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2007.04.122
关键词
austenitic stainless steel; nitrogen; impact property; mechanical property
The Charpy v notch (CVN) impact properties of two kinds of high-nitrogen austenitic stainless steels (HNASS), Fe-24Mn-13Cr-1Ni-0.44N and Fe-24Mn-18Cr-3Ni-0.62N, were investigated at different temperatures. Results show that with the increase of nitrogen concentration, the absorbed-in-fracture energy decreases rapidly; microstructures, such as peeled off layer and transgranular brittle fracture facet (TBFF) are the features of brittle fracture of HNASSs when impacted at -190 degrees C. The transformation of fracture microstructures of them with the descending temperatures was also proposed. (c) 2007 Elsevier B.V. All rights reserved.
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