The Influence of Post Weld Heat Treatment Precipitation on Duplex Stainless Steels Weld Overlay towards Pitting Corrosion

Sim, B. T.; Hong, T.S.; Hanim, Mohamed Arif-Azmah; Tchan, Edwin-Jong Nyon; Talari, Mahesh-Kumar

doi:10.3390/ma12203285

Cited by 10 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been also found that the application of a post-welding heat treatment on welded duplex stainless steel or on welded X70 steel is beneficial on the mechanical properties because the residual stresses are reduced and the formation of certain undesirable phases is avoided [17,18]. In this context, the objective of this work is to study the microstructural and mechanical evolution during a heat treatment at 200 °C and 600 °C for 2 h of a welded joint of X70 steel with duplex stainless steel assembled by the tungsten gas arc welding process (GTAW).…”

Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on the welded joint of X70 steel joined to duplex stainless steel by gas tungsten arc welding

Beziou

Hamdi

Boumerzoug

et al. 2023

Int J Adv Manuf Technol

View full text Add to dashboard Cite

The objective of this work is to study the microstructure and the texture evolution in welded joint of X70 steel with duplex stainless steel joined by gas tungsten arc welding (GTAW) process and heat treated at 200 °C and 600 °C. Then, the microstructural evolutions are correlated to their hardness mechanical property. The characterization techniques used are optical microscopy, scanning electron microscopy, EDS, Vickers microhardness, tensile tests, X-ray diffraction, and electron backscatter diffraction (EBSD) technique. Two heat affected zones were observed in welded joint with different microstructures. Heat affected zone on the X70 steel side and another on the duplex stainless steel side. A solidification microstructure was observed in the fusion zone such elongated ferritic grains and a growth direction < 100 > was found. The most microstructural transformations were observed in the vicinity of the interface which connects the heat affected zone to the fusion zone either on the X70 steel side or on the duplex stainless steel side. The effect of heat treatment on the hardness of the welded joint was noticed in the side of the duplex stainless steel. The fusion zone is the hardest zone of the welded joint (309.4 Hv) and which is not affected by the applied heat. X-ray diffraction analysis did not reveal the formation of new phases after the heat treatments applied to the welded joint. The tensile tests have shown that the welded joint treated at 200 C presents the highest value of ultimate tensile strength (667 MPa).

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on the welded joint of X70 steel joined to duplex stainless steel by gas tungsten arc welding

Beziou

Hamdi

Boumerzoug

et al. 2023

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…Additionally, a weld overlay offers a cost-effective solution as it allows targeted protection in vulnerable areas rather than using expensive alloys throughout the entire structure [13]. Overall, a weld overlay plays a crucial role in enhancing the performance, durability, and cost-effectiveness of essential equipment and infrastructure [14,15]. The weld overlay process is utilized to enhance various surface characteristics of the base metal.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Investigation of Hastelloy C-22 Powder Weld Overlay on SA 240 Type 316L Using Laser Beam Welding for Enhanced Performance

Mehta,

Chaudhari,

Chaudhari

et al. 2023

JMMP

View full text Add to dashboard Cite

This article presents a comprehensive study on the application of Hastelloy C-22 powder weld overlay on SA 240 Type 316L austenitic stainless steel using the laser beam welding process. This novel combination of materials and processes was investigated for the first time, focusing on its potential utility for various industrial applications. Various testing techniques, including visual testing, hardness testing, bend testing, chemical composition analysis using optical spectroscopy, corrosion resistance assessment through the potentiodynamic polarization technique, and macro- and microstructural observation, were employed to evaluate the performance of the weld overlay. The research findings had several significant outcomes. Notably, precise control and minimal alloy mixing were achieved, as evidenced by the dilution at a remarkable height of 0.5 mm from the base metal. The laser welding process resulted in a minimal heat-affected zone and a fine columnar interdendritic microstructure, with average primary and secondary arm spacing values of 3.981 µm and 2.289 µm, respectively. Rigorous visual and bend testing confirmed the integrity of the sound welds in the overlay. Moreover, the high-quality finish of the weld overlay eliminated the need for extensive machining and finishing processes, resulting in cost reductions. This study also demonstrated primary and secondary inter-laminar spacing, leading to improved overall structural integrity. Additionally, the weld overlay exhibited excellent hardness characteristics. The current work contributes to the advancement of welding processes and provides practical solutions to enhance efficiency, cost-effectiveness, and structural performance in relevant industrial applications.

show abstract

“…The DSS UNS S32205 (3%Mo, 22%Cr, and 5%Ni) is mainly used in the chemical industry, oil transportation, food, paper and cellulose [9][10][11][12][13] . In these areas, pipes, tanks, and other components require a welding process that does not alter their mechanical and corrosion resistance properties.…”

Section: Introductionmentioning

confidence: 99%

Pitting and Crevice Corrosion Behavior of the Duplex Stainless Steel UNS S32205 Welded by Using the GTAW Process

et al. 2022

View full text Add to dashboard Cite

This study investigated the pitting and crevice corrosion behavior of the gas tungsten arc welding (GTAW) process in the UNS S32205 according to industrial parameters. Results revealed that the welding process presented a weld metal chemical composition similar to the base metal and an adequate balance of the austenite and ferrite phases. No relevant variation in the hardness was observed and XRD spectra did not identify the presence of deleterious phases in the weld bead. Cyclic polarization tests revealed similarities between welded and base metal samples (20±2°C, NaCl 3.5% wt.). When comparing the behavior obtained in the crevice, and pitting tests, a decrease in the corrosion resistance was observed in the presence of a crevice former. The SEM-EDS proved that the attack occurred mainly in secondary austenites. Profilometry measurements revealed that the crevice corrosion in the weld region was deeper than in the base metal. However, considering the welded samples as a unit, making no difference between regions: weld metal, HAZ, and base metal, the average crevice corrosion depth was comparable to that of the base metal samples. Finally, it was concluded that the welding process used for the UNS S32205 steel did not harm its corrosion resistance.

show abstract

The Influence of Post Weld Heat Treatment Precipitation on Duplex Stainless Steels Weld Overlay towards Pitting Corrosion

Cited by 10 publications

References 14 publications

Effect of heat treatment on the welded joint of X70 steel joined to duplex stainless steel by gas tungsten arc welding

Effect of heat treatment on the welded joint of X70 steel joined to duplex stainless steel by gas tungsten arc welding

Comprehensive Investigation of Hastelloy C-22 Powder Weld Overlay on SA 240 Type 316L Using Laser Beam Welding for Enhanced Performance

Pitting and Crevice Corrosion Behavior of the Duplex Stainless Steel UNS S32205 Welded by Using the GTAW Process

Contact Info

Product

Resources

About