Investigation on laser-MIG hybrid-welded joint for 5A06 aluminum alloy: effect of the laser heat input on grain size and microhardness

2021 ◽  
pp. 1-16
Author(s):  
Xudong Zhou ◽  
Yanqiu Zhao ◽  
Shuhao Tian ◽  
Ting Liu ◽  
Xiaohong Zhan
Keyword(s):  
Grain Size ◽  
Aluminum Alloy ◽  
Heat Input ◽  
Welded Joint ◽  
Laser Heat ◽  
Alloy Effect ◽  
5A06 Aluminum Alloy

Effect of Deep Cryogenic Treatment on Microstructure of 5A06 Aluminum Alloy MIG Welded Joint

2012 ◽  
Vol 724 ◽  
pp. 182-185 ◽  
Author(s):  
Shan Gao ◽  
Zhi Sheng Wu ◽  
Peng Fei Jin ◽  
Jun Jie Wang ◽  
Peng Shuai
Keyword(s):  
Aluminum Alloy ◽  
Arc Welding ◽  
Welded Joint ◽  
Cryogenic Treatment ◽  
Liquid Nitrogen Temperature ◽  
Inert Gas ◽  
Dispersion Strengthening ◽  
Welding Wire ◽  
Deep Cryogenic Treatment ◽  
5A06 Aluminum Alloy

5A06 aluminum alloy welding was obtained by using SAlMg-3 as welding wire with MIG (metal inert gas arc welding). The welded joint with deep cryogenic treatment at liquid nitrogen temperature (-155) for 4h, 8h, 10h were analyzed by metallographic and XRD examination. The results have shown that a lot of subgrain appears in the microstructure of the welded joint resulting in the refined grain after cryogenic treatment. The obvious increasing in content of β-phase (Mg2Al3) is distributed and dispersed evenly, contributed to dispersion strengthening of the welded joint. Meanwhile, orientation phenomena is obtained for some grain after deep cryogenic treatment. As a result, the microstructure of the joint can be modified by the deep cryogenic treatment.

Study on Microstructure and Properties of 5A06 Aluminum Alloy Welded Joint by Deep Cryogenic Treatment

2011 ◽  
Vol 314-316 ◽  
pp. 927-931 ◽  
Author(s):  
Shan Gao ◽  
Zhi Sheng Wu ◽  
Peng Fei Jin ◽  
Jun Jie Wang
Keyword(s):  
Aluminum Alloy ◽  
Welded Joints ◽  
Welded Joint ◽  
Cryogenic Treatment ◽  
Liquid Nitrogen Temperature ◽  
X Ray Diffraction ◽  
Deep Cryogenic Treatment ◽  
X Ray ◽  
Before And After ◽  
5A06 Aluminum Alloy

In this paper, some deep cryogenic treatment experiments are first applied to 5A06 aluminum alloy welded joint at liquid nitrogen temperature （-155°C ）for 4h, 8h, 10h respectively. 5A06 alloy welded joints before and after deep cryogenic treatment are observed by X-ray diffraction and scanning electrical microscopy. The experimental results have shown that the deep cryogenic treatment causesβphase of alloy to disperse and makes the grain smaller than that of joint before deep cryogenic treatment. Therefore, the mechanical properties of 5A06 alloy welded joints after deep cryogenic treatment are greatly improved.

Effect of laser heat input on the interface morphology during laser joining of CFRTP and 6061 aluminum alloy

2020 ◽  
Vol 50 ◽  
pp. 366-379 ◽  
Author(s):  
Yun Li ◽  
Hengchang Bu ◽  
Hongyan Yang ◽  
Gang Liu ◽  
Jianan Yao ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Heat Input ◽  
Interface Morphology ◽  
6061 Aluminum Alloy ◽  
Laser Joining ◽  
Laser Heat

Peculiarities of AD33 aluminum alloy hand laser welding

2020 ◽  
Vol 2020 (12) ◽  
pp. 13-17
Author(s):  
Nikolay Proskuryakov ◽  
Uliana Putilova ◽  
Rasul Mamadaliev ◽  
Oleg Teploukhov
Keyword(s):  
Aluminum Alloy ◽  
Laser Beam ◽  
Laser Welding ◽  
Welded Joint ◽  
Comparative Investigation ◽  
Micro Structure ◽  
Joint Quality ◽  
Beam Motion

The comparative investigation results of AD33 aluminum alloy welded joint quality dependence upon changes in a laser beam motion rate for conditions of hand and automatic laser welding are shown. A micro-structure of a welded joint at the hand and automatic laser welding of the AD33 alloy is investigated.

scholarly journals A Physical-Based Plane Stress Constitutive Model for High Strength AA7075 under Hot Forming Conditions

Metals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 314
Author(s):  
Fulong Chen ◽  
Haitao Qu ◽  
Wei Wu ◽  
Jing-Hua Zheng ◽  
Shuguang Qu ◽  
...  
Keyword(s):  
Grain Size ◽  
Aluminum Alloy ◽  
Plane Stress ◽  
Metal Forming ◽  
Electron Backscatter Diffraction ◽  
High Strength ◽  
Material Model ◽  
Hot Forming ◽  
Industrial Processing ◽  
Average Grain Size

Physicallybased constitutive equations are increasingly used for finite element simulations of metal forming processes due to the robust capability of modelling of underlying microstructure evolutions. However, one of thelimitations of current models is the lack of practical validation using real microstructure data due to the difficulties in achieving statistically meaningful data at a sufficiently large microstructure scale. Particularly, dislocation density and grain size governing the hardening in sheet deformation are of vital importance and need to be precisely quantified. In this paper, a set of dislocation mechanics-based plane stress material model is constructed for hot forming aluminum alloy. This material model is applied to high strength 7075 aluminum alloy for the prediction of the flow behaviorsconditioned at 300–400 °C with various strain rates. Additionally, an electron backscatter diffraction (EBSD) technique was applied to examine the average grain size and geometrical necessary dislocation (GND) density evolutions, enabling both macro- and micro- characteristics to be successfully predicted. In addition, to simulate the experienced plane stress states in sheet metal forming, the calibrated model is further extended to a plane stress stateto accuratelypredict the forming limits under hot conditions.The comprehensively calibrated material model could be used for guidinga better selection of industrial processing parameters and designing process windows, taking into account both the formed shape as well as post formed microstructure and, hence, properties.

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