中间调整处理对17-4PH不锈钢组织性能的影响

doi:10.13251/j.issn.0254-6051.2020.09.018

金属热处理 ›› 2020, Vol. 45 ›› Issue (9): 99-104.DOI: 10.13251/j.issn.0254-6051.2020.09.018

中间调整处理对17-4PH不锈钢组织性能的影响

刘凯旋^1,2, 薛松³, 汪鹏³, 高志刚³, 赵秀明^1,2, 贺显聪^1,2

1.南京工程学院材料工程学院,江苏南京 211167;
2.江苏省先进结构材料与应用技术重点实验室,江苏南京 211167;
3.南工锻造有限公司,江苏江阴 214405

收稿日期:2020-03-17 出版日期:2020-09-25 发布日期:2020-12-29
通讯作者: 赵秀明,教授,E-mail:13952096708@163.com
作者简介:刘凯旋(1994—),男,硕士研究生,主要研究方向为高性能金属材料,E-mail:lkx740811539@163.com
基金资助:
江苏省研究生科研与实践创新计划(SJCX19-0492,SJCX19-0494)

Effect of intermediate adjustment treatment on microstructure and properties of 17-4PH stainless steel

Liu Kaixuan^1,2, Xue Song³, Wang Peng³, Gao Zhigang³, Zhao Xiuming^1,2, He Xiancong^1,2

1. School of Materials Engineering,Nanjing Institute of Technology,Nanjing Jiangsu 211167,China;
2. Jiangsu Key Laboratory of Advanced Structural Materials and Applied Technology,Nanjing Jiangsu 211167,China;
3. Nangong Forging Co.,Ltd.,Jiangyin Jiangsu 214405,China

Received:2020-03-17 Online:2020-09-25 Published:2020-12-29

摘要/Abstract

摘要： 在传统固溶+时效工艺基础上,对石油阀块用17-4PH不锈钢进行了固溶+中间调整+时效处理,通过光学显微镜、扫描电镜、XRD、力学性能测试,分析试样的微观组织和力学性能,研究中间调整处理对其组织性能的影响。结果表明:随着固溶温度的升高,溶入基体的碳及合金元素增多,组织成分更加均匀,相同时效条件下材料的硬度越高。添加中间调整处理后再时效,逆转变奥氏体含量显著提高,材料的塑性及冲击性能均明显增高,但强度有所降低。

关键词: 17-4PH不锈钢, 中间调整处理, 组织, 性能

Abstract: Based on the traditional solid solution treatment+aging process,the 17-4PH stainless steel used for oil valve block was treated by solid solution treatment+intermediate adjustment+aging process.The microstructure and mechanical properties of the specimens were analyzed by using optical microscope,scanning electron microscope,XRD and mechanical property test,and the effect of intermediate treatment on the microstructure and mechanical properties was studied.The results show that with the increase of solid solution treatment temperature,the carbon and alloy elements dissolved in the matrix increase,the microstructure composition is more uniform,and the hardness of the material is higher under the same aging conditions.After adding the intermediate adjustment treatment and then aging,the content of reverse transformed austenite is significantly increased,and the plasticity and impact properties of the material are significantly increased,but the strength is reduced.

Key words: 17-4PH stainless steel, intermediate adjustment treatment, microstructure, properties

中图分类号:

TG156

刘凯旋, 薛松, 汪鹏, 高志刚, 赵秀明, 贺显聪. 中间调整处理对17-4PH不锈钢组织性能的影响[J]. 金属热处理, 2020, 45(9): 99-104.

Liu Kaixuan, Xue Song, Wang Peng, Gao Zhigang, Zhao Xiuming, He Xiancong. Effect of intermediate adjustment treatment on microstructure and properties of 17-4PH stainless steel[J]. Heat Treatment of Metals, 2020, 45(9): 99-104.

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中间调整处理对17-4PH不锈钢组织性能的影响

Effect of intermediate adjustment treatment on microstructure and properties of 17-4PH stainless steel

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