scholarly journals Optimization of Laser Welding Parameters in Titanium Sheet Using Grey-Fuzzy Logic

2017 ◽  
Vol 35 (6) ◽  
pp. 59-66
Author(s):  
Byeong-Ju Jin ◽  
Min-Ho Park ◽  
Tae-Jong Yun ◽  
Ill-Soo Kim ◽  
Ki-Young Park ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Laser Welding ◽  
Welding Parameters ◽  
Titanium Sheet

Effect of Intermetallic Compounds Content on Laser Welding Performance of Al-Fe Alloy Sheets

2014 ◽  
Vol 794-796 ◽  
pp. 401-406 ◽  
Author(s):  
Pi Zhi Zhao ◽  
Yan Feng Pan ◽  
Jiang Tao ◽  
Xiang Jun Shi ◽  
Qi Zhang
Keyword(s):  
Thermal Conductivity ◽  
Laser Welding ◽  
Intermetallic Compounds ◽  
Nonuniform Distribution ◽  
Welding Parameters ◽  
Lower Content ◽  
Absorbed Energy ◽  
Size Uniformity ◽  
Distribution Uniformity ◽  
Weld Pools

The present study investigated the laser welding performance of Al-Fe aluminum alloy sheets with different contents of intermetallic compounds. Under the same welding parameters, the alloy of higher intermetallic compounds content has wide and deep weld pools with uniform sizes. The alloy of lower intermetallic compounds content has narrow and shallow weld pools with nonuniform sizes. The higher content of intermetallic compounds results in higher laser absorptivity and lower thermal conductivity, and then increases the effective absorbed energy during welding, which is beneficial to the formation of wide and deep weld pools. The distribution uniformity of intermetallic compounds influences the size uniformity of weld pools. In the alloy with lower content of intermetallic compounds, the nonuniform distribution of intermeallic compounds results in the formation of abnormal weld pool, leading to the nonuniform size of the weld pools. In the alloy with higher content of intermetallic compounds, uniform distribution of intermetallic compounds make the size of weld pools more uniform.

Effect of steel to aluminum laser welding parameters on mechanical properties of weld beads

2019 ◽  
Vol 111 ◽  
pp. 387-394 ◽  
Author(s):  
Qianqian Guan ◽  
Jiangqi Long ◽  
Ping Yu ◽  
Shunchao Jiang ◽  
Wenhao Huang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Laser Welding ◽  
Welding Parameters

Characteristics of the Keyhole and Energy Absorption during YAG Laser Welding of Al-Li Alloy

2011 ◽  
Vol 287-290 ◽  
pp. 2401-2406 ◽  
Author(s):  
Ai Qin Duan ◽  
Shui Li Gong
Keyword(s):  
Laser Welding ◽  
Heat Input ◽  
High Speed ◽  
Laser Energy ◽  
Welding Parameters ◽  
High Speed Camera ◽  
Welding Time ◽  
Welding Condition ◽  
Yag Laser ◽  
Temperature Area

In this paper, the keyhole of YAG laser welding 5A90 Al-Li alloy was observed and measured through the high speed camera. The characteristics of the keyhole and the effects of welding parameters were studied. The characteristics of the absorption of laser energy and the susceptivity for heat input in welding 5A90 were given. The results show that in this welding condition, the keyhole of laser welding 5A90 is nearly a taper and the highest temperature area is in the bottom. There are clear effects of heat input on the characteristics, especially the surface radius of keyhole and plasma/vapor in keyhole. Another phenomena is observed that sometime plasma/vapor could disappear in 0.3ms welding time, and this feature will be more remarkable as decrease of heat input. It shows that the absorption of energy is unsteady. It is known that when this instability reaches a certain value, an unsteady weld will be formed.

Effect of Laser Welding Parameters on Forming Behavior of Tailor Welded Blanks

2012 ◽  
Vol 445 ◽  
pp. 406-411
Author(s):  
R. Safdarian Korouyeh ◽  
H. Moslemi Naeini ◽  
M.J. Torkamany ◽  
J. Sabaghzadee
Keyword(s):  
Laser Welding ◽  
Welding Parameters ◽  
Tailor Welded Blanks

Effect of Welding Parameters on Formation of Welds during Laser Welding of NiTi Shape Memory Alloy

2008 ◽  
Vol 35 (2) ◽  
pp. 291-296 ◽  
Author(s):  
王蔚 Wang Wei ◽  
陈俐 Chen Li ◽  
赵兴科 Zhao Xingke ◽  
黄继华 Huang Jihua
Keyword(s):  
Shape Memory Alloy ◽  
Laser Welding ◽  
Shape Memory ◽  
Welding Parameters ◽  
Niti Shape Memory Alloy

Effects of Welding Parameters on Bead Formation of Laser Welding under Subatmospheric Pressures

2014 ◽  
Vol 41 (6) ◽  
pp. 0603008
Author(s):  
罗燕 Luo Yan ◽  
唐新华 Tang Xinhua ◽  
芦凤桂 Lu Fenggui ◽  
陈钦涛 Chen Qintao ◽  
崔海超 Cui Haichao
Keyword(s):  
Laser Welding ◽  
Welding Parameters ◽  
Bead Formation

Influences of Laser Welding Parameters on Mechanical Properties of Polymethyl Methacrylate and Stainless-Steel Joints

2017 ◽  
Vol 44 (12) ◽  
pp. 1202006 ◽  
Author(s):  
黄怡洁 Huang Yijie ◽  
高向东 Gao Xiangdong ◽  
林少铎 Lin Shaoduo
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Laser Welding ◽  
Polymethyl Methacrylate ◽  
Welding Parameters ◽  
Steel Joints

scholarly journals Dissimilar Metals Laser Welding between DP1000 Steel and Aluminum Alloy 1050

Metals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 102 ◽  
Author(s):  
António Pereira ◽  
Ana Cabrinha ◽  
Fábio Rocha ◽  
Pedro Marques ◽  
Fábio Fernandes ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Welding ◽  
Mechanical Tests ◽  
Welding Parameters ◽  
Dissimilar Metals ◽  
Butt Welding ◽  
Electron Microscopes ◽  
1050 Aluminum Alloy ◽  
Scanning Electron Microscopes

The welding of dissimilar metals was carried out using a pulsed Nd: YAG laser to join DP1000 steel and an aluminum alloy 1050 H111. Two sheets of each metal, with 30 × 14 × 1 mm3, were lap welded, since butt welding proved to be nearly impossible due to the huge thermal conductivity differences and melting temperature differences of these materials. The aim of this research was to find the optimal laser welding parameters based on the mechanical and microstructure investigations. Thus, the welded samples were then subjected to tensile testing to evaluate the quality of the joining operation. The best set of welding parameters was replicated, and the welding joint obtained using these proper parameters was carefully analyzed using optical and scanning electron microscopes. Despite the predicted difficulties of welding two distinct metals, good quality welded joints were achieved. Additionally, some samples performed satisfactorily well in the mechanical tests, reaching tensile strengths close to the original 1050 aluminum alloy.

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