Evaluation of post-weld heat treatment in 2.25Cr–1Mo steel tube to tube sheet welded joints using magnetic Barkhausen noise measurements

1997 ◽  
Vol 13 (7) ◽  
pp. 614-617 ◽  
Author(s):  
V. Moorthy ◽  
S. Vaidyanathan ◽  
T. Jayakumar ◽  
Baldev Raj
Keyword(s):  
Heat Treatment ◽  
Welded Joints ◽  
Steel Tube ◽  
Post Weld Heat Treatment ◽  
Barkhausen Noise ◽  
Tube Sheet ◽  
Magnetic Barkhausen Noise ◽  
Noise Measurements ◽  
Weld Heat

scholarly journals Small Diameter Tube Post-Weld Heat Treatment Process with Brinell Hardness and Microstructure Inspection

2021 ◽  
Vol 2083 (2) ◽  
pp. 022009
Author(s):  
Xiangqian Qi
Keyword(s):  
Heat Treatment ◽  
Constant Temperature ◽  
Welded Joints ◽  
Brinell Hardness ◽  
Lath Martensite ◽  
Small Diameter ◽  
Hardness Test ◽  
Post Weld Heat Treatment ◽  
Microstructure Observation ◽  
Weld Heat

Abstract The local post-weld heat treatment (PWHT) process test of 9Cr-3W-3Co small-diameter pipe welded joints was carried out using rope-type resistance heaters with different parameters, and the Brinell hardness test and microstructure observation were carried out on the welded joints after heat treatment. The results show that when the heating width was 200mm, the constant temperature was 790°C-800°C, and the constant temperature time was 2 hours, the Brinell hardness of the weld was in the range of 246HBW-265HBW, which had good performance. After tempering at 760°C-800°C, the welds all showed a clear tempered lath martensite.

Mechanical properties of T23 steel welded joints without post-weld heat treatment for fossil fired boilers

2016 ◽  
Vol 31 (24) ◽  
pp. 4000-4008 ◽  
Author(s):  
Xue Wang ◽  
Yong Li ◽  
Huijun Li ◽  
Chao Yang ◽  
Qing-xu Yang
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Welded Joints ◽  
Post Weld Heat Treatment ◽  
Image Position ◽  
Weld Heat

Abstract

Effect of post-weld heat treatment on microstructure and corrosion properties of multi-layer super duplex stainless steel welds

2021 ◽  
Vol 63 (9) ◽  
pp. 791-796
Author(s):  
Lei Tian ◽  
Zhanqi Gao ◽  
Yongdian Han
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Welded Joints ◽  
Post Weld Heat Treatment ◽  
Super Duplex Stainless Steel ◽  
Corrosion Properties ◽  
Austenite Content ◽  
Mechanical And Corrosion Properties ◽  
Weld Heat

Abstract To investigate the influence of post-weld heat treatment on the microstructure and corrosion properties of super duplex stainless steel welded joints, multi-layer multi-pass welding of 2507 super duplex stainless steel by tungsten argon arc welding was performed using an ER2594 welding wire. The microstructures of the welded joints before and after post-weld heat treatment at 1150 °C, 1170 °C and 1190 °C were observed, and the mechanical and corrosion properties were tested. The post-weld heat treatment changed the austenite content and morphology of the welded joint and improved the corrosion resistance of different parts of the weld metal. The choice of various solution heat treatment temperatures affected the change in austenite content in the weld zone and the degree of diffusion and homogenization of the alloy elements. After post-weld heat treatment at 1170 °C, the two-phase ratios in each area of the weld were the most suitable and uniform, and the overall mechanical and corrosion properties of the joint were more uniform.

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