Effects of heat treatment parameters on microstructure and mechanical properties of EAM16MND5 steel by electrical additive manufacturing

ZHANG Yabin; YAN Lianju; LUO Ying; YANG Min; LI Lijun; ZHOU Gaobin; CHEN Haibo; YU Haibo; SHEN Yueyin

Views : 0 下载量: 409 CSCD: 0

PDF
Export
Share
Collection
Album

Effects of heat treatment parameters on microstructure and mechanical properties of EAM16MND5 steel by electrical additive manufacturing
Vol. 49, Issue 4, Pages: 211-215(2019)
Published：2019
DOI：
稿件说明：

移动端阅览

DOI：

ZHANG Yabin, YAN Lianju, LUO Ying, et al. Effects of heat treatment parameters on microstructure and mechanical properties of EAM16MND5 steel by electrical additive manufacturing[J]. Eletric Welding Machine2019, 49(4): 211-215. DOI：

摘要

从消除应力热处理循环次数、热处理保温温度、热处理保温时间和热处理类别4个因素考虑

研究了8种不同的热处理工艺条件下电熔增材制造材料EAM 16MND5强度、冲击韧性和微观组织的变化情况。材料内部应力对材料强度的影响较大

在消除应力后

不同的热处理循环次数、热处理温度对材料强度影响较小;模拟焊后热处理时间对材料强度影响较小

但是对冲击韧性的影响较大

且经过两次消应力热处理循环的材料冲击性能优于一次消应力热处理的材料;消应力热处理和模拟焊后热处理过程中

碳化物有向晶界扩散、并在晶界聚集的倾向。

Abstract

The microstructure and mechanical properties of EAM16MND5 steel by electrical additive manufacturing were investigated by electrical additive manufacturing in eight different heat treatment parameters by the number of thermal cycles

the temperature

holding time and the kind of heat treatment factors. The experimental results showed that the strength of the material was changed less in different thermal cycles or the temperatures of heat treatment after stressrelieving heat treatment. The effect of the holding time on simulated stress relieving heat treatment was less for material strength

but more for impact ductility

and the impact ductility was more excellent for the material with second stress relieving heat treatment than the first. The carbide was diffusing to the intergranular and assembling during stress relieving heat treatment and simulated stress relieving heat treatment.