Post-weld heat treatment cracking susceptibility of T23 weld metals for fossil fuel applications

2012 ◽  
Vol 34 ◽  
pp. 699-706 ◽  
Author(s):  
Kiduck Park ◽  
Sanghoon Kim ◽  
Jungchel Chang ◽  
Changhee Lee
Keyword(s):  
Heat Treatment ◽  
Fossil Fuel ◽  
Post Weld Heat Treatment ◽  
Weld Metals ◽  
Weld Heat

The Formation and Control of Laves Phase in K418 and 42CrMo Dissimilar Metal Laser Weld

2012 ◽  
Vol 166-169 ◽  
pp. 1839-1842 ◽  
Author(s):  
Ming Pang ◽  
Chang Zhen Liu ◽  
Guang Hui Xu ◽  
Jun Hua Ma
Keyword(s):  
Electron Microscopy ◽  
Heat Treatment ◽  
Post Weld Heat Treatment ◽  
Laves Phase ◽  
Laser Weld ◽  
Dissimilar Metal ◽  
Weld Metals ◽  
Transmission Electron ◽  
And Control ◽  
Weld Heat

The effect of K418 and 42CrMo dissimilar metal laser welding velocity, temperature of post-weld heat treatment on controlling formation of laves phase were investigated. Microstructure and laves phase were characterized by optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM).Results showed that Laves phase formed in the interdendritic regions of the weld metals as a result of segregation. The morphology and composition of Laves phase depended strongly on heat input/cooling rate and influenced its response to subsequent homogenization post-weld heat treatment.

scholarly journals Effect of PWHT Temperature and Time on Hardness and Microstructure of 410NiMo Weld Metal

2018 ◽  
Author(s):  
Uğur Özdemir ◽  
Selçuk Keskinkılıç ◽  
Filiz K. Acar ◽  
Fikret Kabakci ◽  
Mustafa Acarer
Keyword(s):  
Heat Treatment ◽  
Weld Metal ◽  
Hydraulic Turbine ◽  
Post Weld Heat Treatment ◽  
Fatigue Properties ◽  
Shielded Metal Arc Welding ◽  
Weld Metals ◽  
Metal Arc Welding ◽  
Hardness Tests ◽  
Weld Heat

ASTM A743 CA6NM alloy is a martensitic stainless steel typically used in energy industry -runners and hydraulic turbine components- due to its superior toughness, yield and fatigue properties. In both the manufacturing, shielded metal arc welding is applied to join for this grade steels. However, weldability of the steels is limited due to formation of hard and brittle phases such as untempered martensite during welding and post weld heat treatment processes. The formation causes a reduction in toughness. In this study, influence of post-weld heat treatment procedure (single tempering and double tempering) and parameters on microstructure and hardness of AWS410NiMo all weld metal. Hardness tests were conducted from weld metal. Microstructures of the all weld metals subjected to different heat treatment process were characterized.

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
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