期刊
MATERIALS LETTERS
卷 258, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2019.126796
关键词
Hot-rolled medium Mn steel; Intercritical annealing; Microstructure; Cementite precipitation; Portevin-Le Chatelier effect; Deformation and fracture
资金
- Fundamental Research Funds for the Central Universities [FRF-TP-18-039A1]
- China Postdoctoral Science Foundation [2019M650482]
The correlation between cementite precipitation and plastic instability phenomena especially Portevin-Le Chatelier (PLC) effect was investigated for a hot-rolled medium Mn steel. The microstructure demonstrated lamellar morphology of austenite and ferrite. Cementite precipitations could be retained by controlling certain intercritical annealing (IA) process. The initial high density of dislocations in ferrite contributed to the continuous yielding. Cementite precipitations lowered solute carbon content in ferrite and the dynamic interaction with dislocations was eliminated. A moderate product of strength and elongation (PSE) grades hot-rolled medium Mn steel without PLC effect during tensile test was obtained by controlling the IA process. (C) 2019 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