Influence of Softening Treatment on Microstructure and Hardness of ZG95Cr17Ni2 Martensitic Stainless Steel

Wang Xin; Suo Zhongyuan; Wang Wenge; Zhang Zhihao; Wang Yijian

doi:10.15980/j.tzzz.2019.03.005

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Influence of Softening Treatment on Microstructure and Hardness of ZG95Cr17Ni2 Martensitic Stainless Steel
Vol. 39, Issue 3, Pages: 251-253(2019)
Published： 2019 ，
DOI： 10.15980/j.tzzz.2019.03.005

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[1]王鑫,索忠源,王文革,张志浩,王毅坚.软化处理对ZG95Cr17Ni2不锈钢组织及硬度的影响[J].特种铸造及有色合金,2019,39(03):251-253.

Wang Xin, Suo Zhongyuan, Wang Wenge, et al. Influence of Softening Treatment on Microstructure and Hardness of ZG95Cr17Ni2 Martensitic Stainless Steel. [J]. Special Casting & Nonferrous Alloys 39(3):251-253(2019)
[1]王鑫,索忠源,王文革,张志浩,王毅坚.软化处理对ZG95Cr17Ni2不锈钢组织及硬度的影响[J].特种铸造及有色合金,2019,39(03):251-253. DOI： 10.15980/j.tzzz.2019.03.005.

Wang Xin, Suo Zhongyuan, Wang Wenge, et al. Influence of Softening Treatment on Microstructure and Hardness of ZG95Cr17Ni2 Martensitic Stainless Steel. [J]. Special Casting & Nonferrous Alloys 39(3):251-253(2019) DOI： 10.15980/j.tzzz.2019.03.005.

摘要

利用扫描电镜、能谱分析、洛氏硬度计等测试手段

研究了ZG95Cr17Ni2马氏体不锈钢在普通退火、等温球化退火、高温回火+等温球化退火种处理工艺下组织及硬度的变化。结果表明

3种处理后的组织均由珠光体+莱氏体+碳化物组成

其中前两种处理后的基体主要由片状或不均匀粒状珠光体组织组成;而经高温回火+等温球化退火处理后的基体主要由均匀细小的粒状珠光体组成。采用普通退火、等温球化退火后的ZG95Cr17Ni2不锈钢硬度（HRC）为36～46

经过高温回火+等温球化处理后的硬度降至29。

Abstract

The changes of microstructure and hardness of ZG95Cr17Ni2 martensitic stainless steel under three different softening treatment

such as conventional annealing

isothermal spheroidizing annealing

high temperature tempering+isothermal spheroidizing annealing

were investigated by means of scanning electron microscope

energy spectrum analysis and Rockwell hardness tester.The results reveal that microstructure of the ZG95Cr17Ni2 martensitic stainless steel at three different softening treatment consists of pearlite+ledeburite+carbides

and the first two substrates are mainly composed of flaky or uneven granular pearlite

and the matrix is composed of homogeneous and fine granular pearlite after high temperature tempering +isothermal spheroidizing annealing.The hardness of ZG95Cr17Ni2 martensitic stainless steel after annealing with conventional annealing and isothermal spheroidization reach 36～46 HRC

and the hardness is reduced to 29 HRC after high temperature tempering+isothermal spheroidizing softening treatment.