University of Oulu

Zha, X.-q.; Xiong, Y.; Zhou, T.; Ren, Y.-f.; Hei, P.-h.; Zhai, Z.-l.; Kömi, J.; Huttula, M.; Cao, W. Impacts of Stress Relief Treatments on Microstructure, Mechanical and Corrosion Properties of Metal Active-Gas Welding Joint of 2205 Duplex Stainless Steel. Materials 2020, 13, 4272.

Impacts of stress relief treatments on microstructure, mechanical and corrosion properties of metal active-gas welding joint of 2205 duplex stainless steel

Saved in:
Author: Zha, Xiao-qin1,2; Xiong, Yi3; Zhou, Tian3;
Organizations: 1Luoyang Ship Material Research Institute, Luoyang 471023, China
2Henan Key Laboratory of Technology and Application of Structural Materials for Ships and Marine Equipment, Luoyang 471023, China
3School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China
4Luoyang Sunrui Special Equipment CO., LTD, Luoyang 471000, China
5Materials and Mechanical Engineering, Center for Advanced Steels Research, University of Oulu, FIN-90014 Oulu, Finland
6Nano and Molecular Systems Research Unit, University of Oulu, FIN-90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 10.1 MB)
Persistent link:
Language: English
Published: Multidisciplinary Digital Publishing Institute, 2020
Publish Date: 2021-02-08


Stress relief treatments were carried out separately with a pneumatic chipping hammer, ultrasonic peening treatment, and heat treatment for metal active-gas welding (MAG) welded joints of 2205 duplex stainless steel. The effects of these methods on the residual stress, microstructure, mechanical properties and corrosion resistance of welded joints were studied. Results show the stress state of the weld and the surrounding area was effectively improved by the pneumatic chipping hammer and ultrasonic peening treatment, and the residual stress field of the surface layer changed from tensile stress to compressive stress. On the contrary, low-temperature stress relieving annealing had no obvious effect on stress distribution. After the pneumatic chipping hammer and ultrasonic peening treatment, the welded joints were machined and hardened. Correspondingly, strength and hardness were improved. However, the heat treatment only led to a slight decrease in strength and hardness due to the static recovery of the welded joint structure. All stress relief methods effectively improved the corrosion resistance of welded joints, with the ultrasonic peening treatment giving the best performance.

see all

Series: Materials
ISSN: 1996-1944
ISSN-E: 1996-1944
ISSN-L: 1996-1944
Volume: 13
Issue: 19
Article number: 4272
DOI: 10.3390/MA13194272
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: This work was supported by the National Natural Science Foundation of China under grants Nos. U1804146 and 51801054, and by the National Key Research and Development Program (2016YFC0401204), the Program for Science, Technology Innovation Talents in Universities of Henan Province (17HASTIT026), Education Department of Henan Province (16A430005) and the Science and Technology Innovation Team of Henan University of Science and Technology (2015XTD006) and the Academy of Finland (311934).
Copyright information: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (