期刊论文

Effects of Heat Treatment Process on Microstructure and Hardness of Fe-16Mn-1.4C-1.2Al Steel

中文

热加工工艺

1001-3814

2018

47

14

205-207,212

10.14158/j.cnki.1001-3814.2018.14.055

湖南省教育厅科学研究重点项目（14A157）；

本校为第一机构

设计正交试验, 研究退火温度、保温时间及冷却方式对Fe-16Mn-1.4C-1.2Al系TWIP钢微观组织和显微维氏硬度的影响.结果显示:热处理参数的影响由强到弱依次为退火温度、保温时间、冷却方式.显微硬度随着退火温度升高和热处理时间延长而降低.600℃处于回复阶段, 无退火奥氏体晶粒形核, 硬度下降的主要原因是位错缺陷的减少.1000℃完成回复再结晶阶段, 晶粒粗化, 晶界面积减少, 降低了合金抵抗塑形变形的能力是该阶段硬度下降的主要原因.局部受压时, 晶界抵抗塑性变形的作用要强于位错缺陷的抵抗作用.

The effects of annealing temperature, holding time and cooling mode on microstructure and Vickers hardness of Fe-16 Mn-1.4 C-1.2 Al TWIP steel were studied by orthogonal test. The results show that, the influence of the heat treatment parameters from strong to weak is the annealing temperature, the heat preservation time, the cooling mode. The microhardness decreases with the increase of annealing temperature and the prolongation of heat treatment time. At 600 ℃, the nucleation of austenite grain is not annealed. The main reason for the decrea...