Assessment of Dissimilar Weld Between Duplex Stainless Steel Grades for Severe Corrosive Applications

2017 ◽  
Author(s):  
Venkatesan Paranthaman ◽  
K. Shanmuga Sundaram
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Microstructural Analysis ◽  
Welding Process ◽  
Charpy Impact ◽  
Dissimilar Welding ◽  
Dissimilar Weld ◽  
Steel Grades ◽  
Steel Aisi ◽  
Stainless Steel Aisi

This paper deals with the investigations on dissimilar weld between two duplex stainless steel grades AISI 2205 and AISI 2507. Increasing use of duplex stainless steel grades instead of austenitic stainless steel grades are growing day by day. This study is an effort in this direction in particularly focusing the dissimilar welding of super duplex stainless steel (AISI 2507) and commercial duplex stainless steel (AISI 2205) grades. Gas tungsten arc welding process was used in this study to fabricate the defect free weld plate. Microstructural analysis on dissimilar weld was carried out to study the diffusion of alloying elements. Micro hardness analysis, Charpy impact toughness test, tensile test and formability test were carried out and the properties were compared with their corresponding base metal properties. Hot corrosion test was carried out to study the feasibility of dissimilar weld in severe corrosive applications. The findings of this paper try to fulfill the applications where commercial duplex stainless steel grades are frequently gets affected in the weld region due to the severity of corrosive environments and due to the sacrificing weld properties.

Computer Prediction of Phase Fraction in Multipass Weld of Duplex Stainless Steel - Proposal of Microstructural Improvement Welding Process -

2021 ◽  
Vol 1016 ◽  
pp. 206-212
Author(s):  
Kazuyoshi Saida ◽  
Tomo Ogura ◽  
Shotaro Yamashita ◽  
Yusuke Oikawa
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Microstructural Analysis ◽  
Kinetic Equations ◽  
Welding Process ◽  
Phase Fraction ◽  
Isothermal Heat Treatment ◽  
Computer Prediction ◽  
Incremental Method ◽  
Multipass Weld

Computer simulation of the α/γ phase transformation in multipass weld of duplex stainless steel was made for predicting the distribution of the γ phase fraction in the weld metal (WM) and HAZ. The kinetic equations including rate constants of the dissolution behaviour as well as precipitation behaviour of γ phase were determined by isothermal heat treatment test. Based on the kinetic equations determined, the distribution of the γ phase fraction in multipass weld of duplex stainless steel was calculated applying the incremental method combined with the heat conduction analysis in welding process. The γ phase fraction was reduced in the higher temperature HAZ and WM, however, that in the reheated HAZ and WM was increased and recovered to the base metal level. Microstructural analysis revealed that the calculated results of the γ phase fraction in multipass weld were consistent with experimental ones. Based on the computer prediction, the microstructural improvement welding (“reheat bead welding”) process, with analogous concept to the temper bead welding technique, was newly proposed for recovering the γ phase fraction in weld even in the as-welded situation.

Welding Behaviour of Duplex Stainless Steel AISI 2205: AReview

2019 ◽  
Vol 18 ◽  
pp. 2731-2737 ◽  
Author(s):  
Aditya N. Chaudhari ◽  
Kartikey Dixit ◽  
Gursimer S. Bhatia ◽  
Bharat Singh ◽  
Piyush Singhal ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Steel Aisi ◽  
Stainless Steel Aisi

Dissimilar Welding between 2205 Duplex Stainless Steel and API X52 High Strength Low Alloy Steel

2018 ◽  
Vol 18 ◽  
pp. 7-13
Author(s):  
Brahim Belkessa ◽  
Djamel Miroud ◽  
Billel Cheniti ◽  
Naima Ouali ◽  
Maamar Hakem ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Alloy Steel ◽  
Welding Process ◽  
High Strength ◽  
Dissimilar Welding ◽  
Low Alloy Steel ◽  
Shielded Metal Arc Welding ◽  
2205 Duplex Stainless Steel ◽  
Metal Arc Welding

This work purposes to investigate the microstructure and the mechanical behavior of dissimilar metals weld between 2205 duplex stainless steel (UNS 31803) and high strength low alloy steel API X52. The joining was produced by shielded metal arc welding process using two different filler metals, the duplex E2209 and austenitic E309 grade.The microstructures of the dissimilar welded joints have been investigated by optical microscopy, scanning electron microscopy and energy-dispersive spectroscopy (EDS). The EDS analysis performed at the API X52/weld metal interface showed an evident gradient of Cr and Ni between fusion and type II boundaries, where the highest hardness value was recorded.

scholarly journals Electric current effect on mechanical properties of SMAW-3G on the stainless steel AISI 304

2018 ◽  
Vol 197 ◽  
pp. 12003
Author(s):  
Edi Widodo ◽  
Iswant Iswanto ◽  
Mirtza Adi Nugraha ◽  
Karyanik Karyanik
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Tensile Test ◽  
Electric Current ◽  
Welding Process ◽  
Welding Current ◽  
Test Results ◽  
Aisi 304 ◽  
Steel Aisi ◽  
Stainless Steel Aisi

Parameters in the welding need to be known because the effect on the mechanical properties of the material after the welding process. This research purposes to find out the influence of variation of SMAW welding current on Stainless Steel AISI 304, with variation of electric current equal to 70A, 80A and 90A.The electrode of AWS A5.4 E308-16 with diameter of 2.6 mm is used. Dye penetrant test, tensile test and metallographic test applied to analysis the characteristic. Based on data from tensile test results obtained the highest value on the specimen welding current 90A is equal to 632 MPa. The lowest tensile strength value recorded on the specimens of current 70A is 498.66 MPa.

scholarly journals Microstructural Analysis of Inconel 625 Nickel Alloy / UNS S31803 Duplex Stainless-Steel Dissimilar Weldments

2019 ◽  
Vol 44 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Tuba Karahan ◽  
Tolga Mert ◽  
Mustafa Tümer ◽  
Zaim Mithat Kerimak
Keyword(s):  
Stainless Steel ◽  
Weld Metal ◽  
Duplex Stainless Steel ◽  
Nickel Alloy ◽  
Nickel Content ◽  
Microstructural Analysis ◽  
Welding Process ◽  
Inconel 625 ◽  
Electron Microscopes ◽  
Dendritic Austenite

In this study, Inconel 625 nickel alloy and UNS 31803 duplex stainless steel (DSS) dissimilar pairs were welded with MIG welding process. Weld metal, obtained with ERNiCrMo-3 filler wire, was subjected to mechanical and microstructural investigations. Notch impact test and micro hardness measurements were realized on weld metal in order to evaluate31803 mechanical properties. Microstructural changes in fusion line of the base metals were examined using optical and electron microscopes. Phase precipitations rich of Ti and Mo elements were detected among dendritic austenite arms in the weld metal. It was observed that ERNiCrMo-3 filler metal had sufficient toughness because of high nickel content.

Study of the effect of sigma phase precipitation on the sliding wear and corrosion behaviour of duplex stainless steel AISI 2205

Wear ◽  
2018 ◽  
Vol 400-401 ◽  
pp. 43-51 ◽  
Author(s):  
J.L. del Abra-Arzola ◽  
M.A. García-Rentería ◽  
V.L. Cruz-Hernández ◽  
J. García-Guerra ◽  
V.H. Martínez-Landeros ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Sliding Wear ◽  
Sigma Phase ◽  
Corrosion Behaviour ◽  
Phase Precipitation ◽  
Wear And Corrosion ◽  
Steel Aisi ◽  
Stainless Steel Aisi
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