Effect of Butt Joint Gap to High-Strength Automobile Steel of Fiber Laser Welding

2011 ◽  
Vol 38 (6) ◽  
pp. 0603013
Author(s):  
陈根余 Chen Genyu ◽  
陈飞 Chen Fei ◽  
张屹 Zhang Yi ◽  
李时春 Li Shichun ◽  
康斌 Kang Bin
Keyword(s):  
Laser Welding ◽  
Fiber Laser ◽  
High Strength ◽  
Butt Joint ◽  
Fiber Laser Welding ◽  
Joint Gap ◽  
Automobile Steel

Fiber laser welding of thick AISI 304 plate in a horizontal (2G) butt joint configuration

2017 ◽  
Vol 118 ◽  
pp. 53-65 ◽  
Author(s):  
Junhao Sun ◽  
Kai Feng ◽  
Ke Zhang ◽  
Baochao Guo ◽  
En Jiang ◽  
...  
Keyword(s):  
Laser Welding ◽  
Fiber Laser ◽  
Butt Joint ◽  
Fiber Laser Welding ◽  
Aisi 304 ◽  
Joint Configuration

scholarly journals High-Power Fiber Laser Welding of High-Strength AA7075-T6 Aluminum Alloy Welds for Mechanical Properties Research

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7498
Author(s):  
Abdel-Monem El-Batahgy ◽  
Olga Klimova-Korsmik ◽  
Aleksandr Akhmetov ◽  
Gleb Turichin
Keyword(s):  
Mechanical Properties ◽  
Laser Welding ◽  
Fiber Laser ◽  
Fusion Zone ◽  
High Power ◽  
Heat Input ◽  
Welded Joint ◽  
High Strength ◽  
Residual Tensile Stress ◽  
Fiber Laser Welding

The results disclosed that both the microstructure and mechanical properties of AA7075-T6 laser welds are considerably influenced by the heat input. In comparison with high heat input (arc welding), a smaller weld fusion zone with a finer dendrite arm spacing, limited loss of alloying elements, less intergranular segregation, and reduced residual tensile stress was obtained using low heat input. This resulted in a lower tendency of porosity and hot cracking, which improved the welded metal’s soundness. Subsequently, higher hardness as well as higher tensile strength for the welded joint was obtained with lower heat input. A welded joint with better mechanical properties and less mechanical discrepancy is important for better productivity. The implemented high-power fiber laser has enabled the production of a low heat input welded joint using a high welding speed, which is of considerable importance for minimizing not only the fusion zone size but also the deterioration of its properties. In other words, high-power fiber laser welding is a viable solution for recovering the mechanical properties of the high-strength AA 7075-T6 welds. These results are encouraging to build upon for further improvement of the mechanical properties to be comparable with the base metal.

Laser absorption in high-power fiber laser welding of stainless steel and aluminum alloy

2008 ◽  
Author(s):  
Naoyuki Matsumoto ◽  
Yousuke Kawahito ◽  
Masami Mizutani ◽  
Seiji Katayama
Keyword(s):  
Stainless Steel ◽  
Aluminum Alloy ◽  
Laser Welding ◽  
Fiber Laser ◽  
High Power ◽  
Fiber Laser Welding ◽  
Laser Absorption
Sign in / Sign up

Export Citation Format

Share Document