Thermo-electromagnetic effect on weld microstructure in magnetically assisted laser welding of austenite steel

2019 ◽  
Vol 41 ◽  
pp. 111-118 ◽  
Author(s):  
Xin Chen ◽  
Manlelan Luo ◽  
Renzhi Hu ◽  
Ruidi Li ◽  
Lvjie Liang ◽  
...  
Keyword(s):  
Laser Welding ◽  
Electromagnetic Effect ◽  
Weld Microstructure ◽  
Austenite Steel ◽  
Magnetically Assisted

Laser Welding of SSM Cast A356 Aluminium Alloy Processed with CSIR-Rheo Technology

2006 ◽  
Vol 116-117 ◽  
pp. 173-176 ◽  
Author(s):  
R. Akhter ◽  
L. Ivanchev ◽  
C. Van Rooyen ◽  
P. Kazadi ◽  
H.P. Burger
Keyword(s):  
Mechanical Properties ◽  
Laser Welding ◽  
Weld Metal ◽  
Aluminium Alloy ◽  
Nd:Yag Laser ◽  
Dendrite Structure ◽  
Weld Microstructure ◽  
Semi Solid ◽  
A356 Aluminium Alloy ◽  
Fine Dendrite

Samples of aluminium alloy A356 were manufactured by Semi Solid Metals HPDC technology, developed recently in CSIR-Pretoria. They were butt welded in as cast conditions using an Nd:YAG laser. The base metal and weld microstructure were presented. The effect of different heat treatments on microstructure and mechanical properties of the welds were investigated. It was found that the fine dendrite structure of the weld metal contributed for equalizing the mechanical properties of the joint.

scholarly journals Effect of Shielding Gas on Microstructures and Mechanical Properties of TC4 Titanium Alloy Ultranarrow Gap Welded Joint by Laser Welding with Filler Wire

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Naiwen Fang ◽  
Erjun Guo ◽  
Kai Xu ◽  
Ruisheng Huang ◽  
Yiming Ma ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
Grain Boundary ◽  
Laser Welding ◽  
Weld Metal ◽  
Welded Joint ◽  
Filler Wire ◽  
Shielding Gas ◽  
Weld Microstructure ◽  
Tc4 Titanium Alloy

A 20 mm thick TC4 titanium alloy plate was welded by ultranarrow gap laser welding with filler wire with Ar and He as shielding gas, respectively. A characterization analysis of the microstructures and mechanical properties of the welded joint was conducted with OM, SEM, XRD, and EBSD and through the microhardness test and tensile test. The results showed that HAZ of the welded joint formed with Ar as shielding gas was much wider than that with He, and weld microstructure composition with the two shielding gases was basically consistent; phase boundary of the weld metal obtained with Ar was clearer, with a larger misorientation between the laths; α′ martensite lath in weld metal prepared with He showed obvious preferred orientation distribution, and α′ martensite microstructure was much finer; the misorientation of α′ phase grain boundary of weld microstructure prepared with Ar was slightly less distributed in high angle grain boundary than that with He; tensile property of the welded joint prepared with He was better than that with Ar; the hardness of each zone of welded joint prepared with He was less fluctuated and the hardness value measured was slightly higher than that with Ar.

Strength characterization of assemblies of polymers, made by laser welding

2015 ◽  
Vol 103 (5) ◽  
pp. 503
Author(s):  
Vladimir Gantchenko ◽  
Jacques Renard ◽  
Alexander Olowinsky ◽  
Gerhard Otto
Keyword(s):  
Laser Welding ◽  
Strength Characterization

Peculiarities of laser welding of Chromium-Nickel steel and Titanium alloy

2019 ◽  
Author(s):  
Ekaterina Senaeva ◽  
◽  
Nataliya Pugacheva ◽  
Aleksei Makarov ◽  
◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Laser Welding ◽  
Nickel Steel
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