The operative dynamic recrystallization mechanism of austenite during the transient deformation in a Ni-30%Fe model alloy

doi:10.1088/1742-6596/1270/1/012047

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	The operative dynamic recrystallization mechanism of austenite during the transient deformation in a Ni-30%Fe model alloy
	Chen,Wenxiong 1,2; Zheng,Chengwu 1,2; Dianzhong,Li 1,2
	2019-08-01
发表期刊	Journal of Physics: Conference Series
ISSN	1742-6588
卷号	1270 期号:1
摘要	Abstract Effect of strain rate and its discontinuous changes on dynamic recrystallization (DRX) behaviours of a Ni-30%Fe austenitic model alloy were investigated by hot compression tests. The results show that, during deformation at slow strain rates, DRX occurs with discontinuous nature, i.e. the DRX nuclei preferentially appear along initial grain boundaries followed by a quick growth through the strain-induced boundary migration (SIBM). Interestingly, during the further deformation after an abrupt increase in the strain rate, it can be found that the subgrains which developed in the first stage of deformation would gradually transform into new DRX grains. Therefore, in spite of the low stacking fault energy austenite, the continuous DRX (CDRX) is indeed possible to be activated during the transient deformation. The strain-induced sub-boundaries developed in the first deformation stages are believed to transform into higher-angle boundaries easily in further straining after abrupt increase of the strain rate. By this way, the CDRX mechanism in austenite is significantly promoted. Moreover, the local growth of new grains also plays an important role in this dynamic softening process.
DOI	10.1088/1742-6596/1270/1/012047
语种	英语
WOS记录号	IOP:1742-6588-1270-1-012047
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80621
作者单位	1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, CAS, Wenhua Road 72, Shenyang 110016, China 2.School of Materials Science and Engineering, University of Science and Technology of China, Wenhua Road 72, Shenyang 110016, China
推荐引用方式 GB/T 7714	Chen,Wenxiong,Zheng,Chengwu,Dianzhong,Li. The operative dynamic recrystallization mechanism of austenite during the transient deformation in a Ni-30%Fe model alloy[J]. Journal of Physics: Conference Series,2019,1270(1).
APA	Chen,Wenxiong,Zheng,Chengwu,&Dianzhong,Li.(2019).The operative dynamic recrystallization mechanism of austenite during the transient deformation in a Ni-30%Fe model alloy.Journal of Physics: Conference Series,1270(1).
MLA	Chen,Wenxiong,et al."The operative dynamic recrystallization mechanism of austenite during the transient deformation in a Ni-30%Fe model alloy".Journal of Physics: Conference Series 1270.1(2019).