Effect of post-weld heat treatment and neutron irradiation on a dissimilar-metal joint between F82H steel and 316L stainless steel

2015 ◽  
Vol 98-99 ◽  
pp. 1968-1972 ◽  
Author(s):  
Haiying Fu ◽  
Takuya Nagasaka ◽  
Nobuyuki Kometani ◽  
Takeo Muroga ◽  
Wenhai Guan ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Neutron Irradiation ◽  
316L Stainless Steel ◽  
Post Weld Heat Treatment ◽  
Dissimilar Metal ◽  
Metal Joint ◽  
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.

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