The mechanism of elevated temperature intergranular cracking in heat-resistant alloys

Roles of Molybdenum and Tungsten on Reheat Cracking Susceptibility of 2.25Cr Heat Resistant Steels

“…[5][6][7][8][9][10][11][12][13][14][15] It has reported that the T/P24 steel is much less susceptible to the intergranular cracking than the T/P23 steel, 4) although the reason is not clear. It is the purpose of this study to investigate the intrinsic reason why the intergranular cracking susceptibility is higher in the tungsten-alloyed than the molybdenum-alloyed 2.25Cr steel.…”

Hot Ductility Loss and Recovery in the CGHAZ of T23 Steel during Post-weld Heat Treatment at 750°C

“…Therefore, the operating stress and residual stress might lead to reheat cracking during PWHT or high temperature service. [8][9][10][11][12] In our previous work, the reheat cracking mechanism depended on the PWHT temperature. 13) Similarly, the microstructure and hot ductility would also be affected by the PWHT time.…”

Effect of Austenite-to-Ferrite Phase Transformation at Grain Boundaries on PWHT Cracking Susceptibility in CGHAZ of T23 Steel

“…However, in the case of T23 material, PWHT cracking (reheat cracking) has been reported in the process of post-weld heat treatment (PWHT) to mitigate the residual stress in the weld metal [8][9][10][11][12][13][14][15][16]. Therefore, much research has been conducted to analyze the cause of the formation of reheat cracks in 2.25Cr-1.6W steel.…”