Phase Transformation Behaviour in P91 During Post Weld Heat Treatment: A Gleeble Study

2017 ◽  
Vol 70 (3) ◽  
pp. 875-885 ◽  
Author(s):  
G. Vimalan ◽  
G. Ravichandran ◽  
V. Muthupandi
Keyword(s):  
Heat Treatment ◽  
Phase Transformation ◽  
Post Weld Heat Treatment ◽  
Transformation Behaviour ◽  
Weld Heat

POST WELD HEAT TREATMENT OF NiTinol SHAPE MEMORY ALLOY USING LASER POWER SOURCE

2019 ◽  
Vol 27 (06) ◽  
pp. 1950160
Author(s):  
T. DEEPAN BHARATHI KANNAN ◽  
GOVINDU TUTTA ◽  
P. SATHIYA ◽  
T. RAMESH
Keyword(s):  
Heat Treatment ◽  
Tensile Strength ◽  
Phase Transformation ◽  
Laser Power ◽  
Yttrium Aluminum Garnet ◽  
Power Source ◽  
Post Weld Heat Treatment ◽  
Transformation Temperatures ◽  
Weld Heat

In this work, attempt is made to carry out post weld heat treatment (PWHT) on NiTinol samples using laser power source. Initially, 1[Formula: see text]mm thick NiTinol sheets were welded in butt joint position using Ytterbium: Yttrium aluminum garnet (Yb: YAG) laser power source. Laser welding was carried out in continuous mode, and the quality of the weld was assessed with respect to phase transformation temperatures, microhardness, tensile strength, and corrosion resistance. To improve the quality of the welded samples, PWHT was done by passing a laser beam over the welded samples. It was found that PWHT had a significant effect on the phase transformation temperatures, microhardness, tensile strength and corrosion behavior of the welded NiTinol joints.

Effect of filler wire and post weld heat treatment on the mechanical properties of laser beam-welded AA2198

2021 ◽  
pp. 111257
Author(s):  
Theano N. Examilioti ◽  
Nikolai Kashaev ◽  
Volker Ventzke ◽  
Benjamin Klusemann ◽  
Nikolaos D. Alexopoulos
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Laser Beam ◽  
Post Weld Heat Treatment ◽  
Filler Wire ◽  
Weld Heat

Effect of post-weld heat treatment on the joint of friction-welded 1MnCrMoNi steel

2021 ◽  
Vol 26 (3) ◽  
pp. 220-226
Author(s):  
Qidong Nie ◽  
Xiang Wang ◽  
Sheng Wang ◽  
Ningxing Li ◽  
Xinlin Li ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Post Weld Heat Treatment ◽  
Weld Heat

scholarly journals Influence of post weld heat treatment on tensile properties of cold metal transfer (CMT) arc welded AA6061-T6 aluminium alloy joints

2019 ◽  
Vol 28 (1) ◽  
pp. 135-145 ◽  
Author(s):  
Addanki Ramaswamy ◽  
Sudersanan Malarvizhi ◽  
Visvalingam Balasubramanian
Keyword(s):  
Heat Treatment ◽  
Tensile Properties ◽  
Gas Metal Arc Welding ◽  
Weight Ratio ◽  
Welding Process ◽  
Metal Transfer ◽  
Post Weld Heat Treatment ◽  
Cold Metal Transfer ◽  
Cold Metal ◽  
Weld Heat

AbstractAluminium alloys of 6xxx series are widely used in the fabrication of light weight structures especially, where high strength to weight ratio and excellent weld-ability characteristics are desirable. Gas metal arc welding (GMAW) is the most predominantly used welding process in many industries due to the ease of automation. In this investigation, an attempt has been made to identify the best variant of GMAW process to overcome the problems like alloy segregation, precipitate dissolution and heat affected zone (HAZ) softening. Thin sheets of AA6061-T6 alloy were welded by cold metal transfer (CMT) and Pulsed CMT (PCMT). Among the two joints, the joint made by PCMT technique exhibited superior tensile properties due to the mechanical stirring action in the weld pool caused by forward and rearward movement of the wire along with the controllable diffusion rate at the interface caused by shorter solidification time. However, softening still exists in the welded joints. Further to increase the joint efficiency and to minimize HAZ softening, the joints were subjected to post weld heat treatment (PWHT). Approximately 10% improvement in the tensile properties had been observed in the PWHT joints due to the nucleation of strengthening precipitates in the weld metal and HAZ.

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