scholarly journals Nd:YAG laser welding of dissimilar metals of titanium alloy to stainless steel without filler metal based on a hybrid connection mechanism

2020 ◽  
Vol 9 (2) ◽  
pp. 1662-1672 ◽  
Author(s):  
Yan Zhang ◽  
JianPing Zhou ◽  
DaQian Sun ◽  
XiaoYan Gu
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Laser Welding ◽  
Nd:Yag Laser ◽  
Filler Metal ◽  
Dissimilar Metals

scholarly journals Two pass laser welding of TC4 Titanium alloy to 301L stainless steel via pure V interlayer

2020 ◽  
Vol 9 (2) ◽  
pp. 1400-1404 ◽  
Author(s):  
Yan Zhang ◽  
Jianping Zhou ◽  
DaQian Sun ◽  
HongMei Li
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Laser Welding ◽  
Tc4 Titanium Alloy

scholarly journals Wire-Feeding Laser Welding of Copper/Stainless Steel Using Different Filler Metals

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2122
Author(s):  
Xiaoyan Gu ◽  
Ziwei Cui ◽  
Xiaopeng Gu ◽  
Jiaxu Shao
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Laser Welding ◽  
Large Deformation ◽  
Grain Refinement ◽  
Filler Metal ◽  
Weld Interface ◽  
Grain Sizes ◽  
Filled Joint ◽  
Wire Feeding

Ni-based filler metal and Ni-Cu-based filler metal were used to obtain copper/stainless steel (Cu/SS) joints through wire-feeding laser welding. Along the SS/weld interface, there exist different grain sizes (from coarse columnar grains to fine equiaxed grains). The heat affected zone (HAZ) on the copper side consisted of two areas with different grain sizes and the size of the grain in the Cu-HAZ of the Ni-Cu-based filled joint was much smaller than that of the Ni-based filled joint. Our results showed that grain refinement at the copper/weld (Cu/weld) interface of the Ni-Cu-based filled joint was observed through high-resolution electron backscattered diffraction (EBSD). There was a hardness elevation at the Cu/weld interface of the Ni-Cu-based filled joint due to the grain refinement on the weld of the copper side. The maximum tensile strength of the Ni-Cu-based filled joint was obtained and reached 91.2% of the tensile strength of the copper base metal (Cu-BM). Joints in this study were observed to fracture in a ductile mode. Furthermore, the Ni-Cu-based filled joint exhibited a higher plastic deformation, which was primarily caused by the large deformation of the weld zone and the large deformation of the Cu-BM due to the high plasticity of the weld, which alleviated the stress concentration, as indicated by 2D-digital image correlation (DIC) test results.

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