期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2013.11.090
关键词
Hot workability; Hot compression test; Processing map; Hot ductility; Cr2N particle; Intergranular cracking
类别
资金
- Ministry of Trade, Industry and Energy (MOTIE) of Republic of Korea
The hot workability of a nitrogen-alloyed Fe-18Mn-18Cr-N austenitic stainless steel was investigated through hot compression tests using a Gleeble simulator in a temperature range of 700-1100 degrees C and at strain rates of 0.01-5 s(-1). From stress(sigma)-strain(epsilon) curves obtained in the hot compression tests, a processing map was established to estimate the hot workability, based on the dynamic material model (DMM). The processing map predicted that the optimum hot working regimes are in the temperature range from 1050 degrees C to 1100 degrees C at strain rate of 0.01 s(-1). After the hot compression tests, intergranular cracking arose under most conditions, except for the optimum hot working condition predicted by the processing map. This study discusses the cause of the intergranular cracking in terms of the precipitation of intergranular Cr2N particles. In addition, hot ductility tests were carried out for a better understanding of the decrease in the hot workability, and a significant loss of ductility was observed with intergranular Cr2N precipitation. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据