The Effect of Aging Heat Treatment on the Microstructure and Mechanical Properties of 10Cr20Ni25Mo1.5NbN Austenitic Steel

The Effect of Aging Heat Treatment on the Microstructure and Mechanical Properties of 10Cr20Ni25Mo1.5NbN Austenitic Steel

The effect of aging heat treatment on the microstructure and mechanical properties of 10Cr20Ni25Mo1.5NbN austenitic steel was investigated in this article. The microstructure was characterized by scanning electron microscopy, energy dispersive spectrometry and transmission electron microscopy. Resul...

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Main Authors: Liang Zhiyuan, Sha Wanhua, Zhao Qinxin, Wang Chongbin, Wang Jianyong, Jiang Weiwei
Format: Article
Language:English
Published: De Gruyter 2016-01-01
Series:High Temperature Materials and Processes
Subjects:
10cr20ni25mo1.5nbn austenitic
aging treatment
microstructure
mechanical property
62.20.mk
Online Access:https://doi.org/10.1515/htmp-2014-0155
id doaj-c1145ffae7a542b09f424e2e66d24847
record_format Article
spelling doaj-c1145ffae7a542b09f424e2e66d248472021-09-06T19:19:54ZengDe GruyterHigh Temperature Materials and Processes0334-64552191-03242016-01-013511710.1515/htmp-2014-0155The Effect of Aging Heat Treatment on the Microstructure and Mechanical Properties of 10Cr20Ni25Mo1.5NbN Austenitic SteelLiang Zhiyuan0Sha Wanhua1Zhao Qinxin2Wang Chongbin3Wang Jianyong4Jiang Weiwei5Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, P.R. ChinaShanghai Boiler Works Co. Limited, Shanghai 200240, P.R. ChinaKey Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, P.R. ChinaShanghai Boiler Works Co. Limited, Shanghai 200240, P.R. ChinaShanghai Boiler Works Co. Limited, Shanghai 200240, P.R. ChinaKey Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, P.R. ChinaThe effect of aging heat treatment on the microstructure and mechanical properties of 10Cr20Ni25Mo1.5NbN austenitic steel was investigated in this article. The microstructure was characterized by scanning electron microscopy, energy dispersive spectrometry and transmission electron microscopy. Results show that the microstructure of 10Cr20Ni25Mo1.5NbN austenitic is composed of austenite. This steel was strengthened by precipitates of secondary phases that were mainly M23C6 carbides and NbCrN nitrides. As aging treatment time increased, the tensile strength first rose (0–3,000 h) and then fell (3,000–5,000 h) due to the decrease of high density of dislocations. The impact absorbed energy decreased sharply, causing the sulfides to precipitate at the grain boundary. Therefore, the content of sulfur should be strictly controlled in the steelmaking process.https://doi.org/10.1515/htmp-2014-015510cr20ni25mo1.5nbn austeniticaging treatmentmicrostructuremechanical property62.20.mk
collection DOAJ
language English
format Article
sources DOAJ
author Liang Zhiyuan
Sha Wanhua
Zhao Qinxin
Wang Chongbin
Wang Jianyong
Jiang Weiwei
spellingShingle Liang Zhiyuan
Sha Wanhua
Zhao Qinxin
Wang Chongbin
Wang Jianyong
Jiang Weiwei
The Effect of Aging Heat Treatment on the Microstructure and Mechanical Properties of 10Cr20Ni25Mo1.5NbN Austenitic Steel
High Temperature Materials and Processes
10cr20ni25mo1.5nbn austenitic
aging treatment
microstructure
mechanical property
62.20.mk
author_facet Liang Zhiyuan
Sha Wanhua
Zhao Qinxin
Wang Chongbin
Wang Jianyong
Jiang Weiwei
author_sort Liang Zhiyuan
title The Effect of Aging Heat Treatment on the Microstructure and Mechanical Properties of 10Cr20Ni25Mo1.5NbN Austenitic Steel
title_short The Effect of Aging Heat Treatment on the Microstructure and Mechanical Properties of 10Cr20Ni25Mo1.5NbN Austenitic Steel
title_full The Effect of Aging Heat Treatment on the Microstructure and Mechanical Properties of 10Cr20Ni25Mo1.5NbN Austenitic Steel
title_fullStr The Effect of Aging Heat Treatment on the Microstructure and Mechanical Properties of 10Cr20Ni25Mo1.5NbN Austenitic Steel
title_full_unstemmed The Effect of Aging Heat Treatment on the Microstructure and Mechanical Properties of 10Cr20Ni25Mo1.5NbN Austenitic Steel
title_sort effect of aging heat treatment on the microstructure and mechanical properties of 10cr20ni25mo1.5nbn austenitic steel
publisher De Gruyter
series High Temperature Materials and Processes
issn 0334-6455
2191-0324
publishDate 2016-01-01
description The effect of aging heat treatment on the microstructure and mechanical properties of 10Cr20Ni25Mo1.5NbN austenitic steel was investigated in this article. The microstructure was characterized by scanning electron microscopy, energy dispersive spectrometry and transmission electron microscopy. Results show that the microstructure of 10Cr20Ni25Mo1.5NbN austenitic is composed of austenite. This steel was strengthened by precipitates of secondary phases that were mainly M23C6 carbides and NbCrN nitrides. As aging treatment time increased, the tensile strength first rose (0–3,000 h) and then fell (3,000–5,000 h) due to the decrease of high density of dislocations. The impact absorbed energy decreased sharply, causing the sulfides to precipitate at the grain boundary. Therefore, the content of sulfur should be strictly controlled in the steelmaking process.
topic 10cr20ni25mo1.5nbn austenitic
aging treatment
microstructure
mechanical property
62.20.mk
url https://doi.org/10.1515/htmp-2014-0155
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