Influence of Shielding Gas on Microstructure and Properties of GMAW DSS2205 Welded Joints
In the present study, the microstructures and properties of DSS 2205 solid wire MIG welded samples prepared in different shielding gases (pure Ar gas, 98%Ar + 2%O<sub>2</sub> and 98%Ar + 2%N<sub>2</sub>) were investigated for improving the weldability of DSS 2205 welded joint...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-05-01
|
Series: | Materials |
Subjects: | |
Online Access: | https://www.mdpi.com/1996-1944/14/10/2671 |
id |
doaj-302383d524c6480eb1aaeb46696dab90 |
---|---|
record_format |
Article |
spelling |
doaj-302383d524c6480eb1aaeb46696dab902021-06-01T00:32:26ZengMDPI AGMaterials1996-19442021-05-01142671267110.3390/ma14102671Influence of Shielding Gas on Microstructure and Properties of GMAW DSS2205 Welded JointsXin-Yu Zhang0Xiao-Qin Zha1Ling-Qing Gao2Peng-Hui Hei3Yong-Feng Ren4Luoyang Ship Material Research Institute, Luoyang 471023, ChinaLuoyang Ship Material Research Institute, Luoyang 471023, ChinaLuoyang Ship Material Research Institute, Luoyang 471023, ChinaLuoyang Sunrui Special Equipment Co., Ltd., Luoyang 471000, ChinaLinzhou, Fengbao Pipe Industry Co., Ltd., Anyang 456592, ChinaIn the present study, the microstructures and properties of DSS 2205 solid wire MIG welded samples prepared in different shielding gases (pure Ar gas, 98%Ar + 2%O<sub>2</sub> and 98%Ar + 2%N<sub>2</sub>) were investigated for improving the weldability of DSS 2205 welded joint. The work was conducted by mechanical property tests (hardness and tensile test) and corrosion resistance property tests (immersion and electrochemical tests). The results show that adding 2%O<sub>2</sub> into pure Ar gas as the shielding gas decreases crystal defects (faults) and improves the mechanical properties and corrosion resistance of the welded joints. Phase equilibrium and microstructural homogeneity in welded seam (WS) and heat-affected zone (HAZ) can be adjusted and the strength and corrosion resistance of welded joints increased obviously by adding 2%N<sub>2</sub> to pure Ar gas as the shielding gas. Compared with DSS 2205 solid wire MIG welding in 98%Ar + 2%O<sub>2</sub> mixed atmosphere, the strength and corrosion resistance of welded joints are improved more obviously in 98%Ar + 2%N<sub>2</sub> mixed atmosphere.https://www.mdpi.com/1996-1944/14/10/26712205 duplex stainless steel (DSS 2205)welded jointshielding gaspitting corrosionintergranular corrosion |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xin-Yu Zhang Xiao-Qin Zha Ling-Qing Gao Peng-Hui Hei Yong-Feng Ren |
spellingShingle |
Xin-Yu Zhang Xiao-Qin Zha Ling-Qing Gao Peng-Hui Hei Yong-Feng Ren Influence of Shielding Gas on Microstructure and Properties of GMAW DSS2205 Welded Joints Materials 2205 duplex stainless steel (DSS 2205) welded joint shielding gas pitting corrosion intergranular corrosion |
author_facet |
Xin-Yu Zhang Xiao-Qin Zha Ling-Qing Gao Peng-Hui Hei Yong-Feng Ren |
author_sort |
Xin-Yu Zhang |
title |
Influence of Shielding Gas on Microstructure and Properties of GMAW DSS2205 Welded Joints |
title_short |
Influence of Shielding Gas on Microstructure and Properties of GMAW DSS2205 Welded Joints |
title_full |
Influence of Shielding Gas on Microstructure and Properties of GMAW DSS2205 Welded Joints |
title_fullStr |
Influence of Shielding Gas on Microstructure and Properties of GMAW DSS2205 Welded Joints |
title_full_unstemmed |
Influence of Shielding Gas on Microstructure and Properties of GMAW DSS2205 Welded Joints |
title_sort |
influence of shielding gas on microstructure and properties of gmaw dss2205 welded joints |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2021-05-01 |
description |
In the present study, the microstructures and properties of DSS 2205 solid wire MIG welded samples prepared in different shielding gases (pure Ar gas, 98%Ar + 2%O<sub>2</sub> and 98%Ar + 2%N<sub>2</sub>) were investigated for improving the weldability of DSS 2205 welded joint. The work was conducted by mechanical property tests (hardness and tensile test) and corrosion resistance property tests (immersion and electrochemical tests). The results show that adding 2%O<sub>2</sub> into pure Ar gas as the shielding gas decreases crystal defects (faults) and improves the mechanical properties and corrosion resistance of the welded joints. Phase equilibrium and microstructural homogeneity in welded seam (WS) and heat-affected zone (HAZ) can be adjusted and the strength and corrosion resistance of welded joints increased obviously by adding 2%N<sub>2</sub> to pure Ar gas as the shielding gas. Compared with DSS 2205 solid wire MIG welding in 98%Ar + 2%O<sub>2</sub> mixed atmosphere, the strength and corrosion resistance of welded joints are improved more obviously in 98%Ar + 2%N<sub>2</sub> mixed atmosphere. |
topic |
2205 duplex stainless steel (DSS 2205) welded joint shielding gas pitting corrosion intergranular corrosion |
url |
https://www.mdpi.com/1996-1944/14/10/2671 |
work_keys_str_mv |
AT xinyuzhang influenceofshieldinggasonmicrostructureandpropertiesofgmawdss2205weldedjoints AT xiaoqinzha influenceofshieldinggasonmicrostructureandpropertiesofgmawdss2205weldedjoints AT lingqinggao influenceofshieldinggasonmicrostructureandpropertiesofgmawdss2205weldedjoints AT penghuihei influenceofshieldinggasonmicrostructureandpropertiesofgmawdss2205weldedjoints AT yongfengren influenceofshieldinggasonmicrostructureandpropertiesofgmawdss2205weldedjoints |
_version_ |
1721414591194333184 |