Angular distortion and through-thickness residual stress distribution in the friction-stir processed 6061-T6 aluminum alloy

Effect of multi-section linear non-uniform heat transfer coefficient on quenching residual stress distribution in 27mm-thick Al-Zn-Mg-Cu aluminum alloy plate was simulation studied by using the finite element method, and the surface quenching residual stress distribution was measured by the X-ray diffraction method and hole-drilling method. The results show that the surface quenching residual stress represents the same distribution with non-uniform heat transfer coefficient in the transverse direction and the stress level maintains initial stress level of the heat transfer coefficient at each location. The distribution of the quenching residual stress in the center of the plate is approximately uniform and the stress level is approximately equal to average of maximum and minimum initial stress level. The measured surface quenching residual stress shows a wavy distribution in the transverse direction, which is similar to the simulated surface stress distribution without considering the stress level. The measurement results can be explained by the multi-section linear non-uniform quenching model.

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Comparison of Residual Stress Between MIG Welding and Friction Stir Welding

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.155-156.1218 ◽

2012 ◽

Vol 155-156 ◽

pp. 1218-1222

Author(s):

Lei Wang ◽

Mitsuyosi Tsunori

Keyword(s):

Residual Stress ◽

Friction Stir Welding ◽

Stress Distribution ◽

Yield Strength ◽

Room Temperature ◽

Welding Process ◽

Residual Stress Distribution ◽

Mig Welding ◽

Friction Stir ◽

Friction Stir Welding Process

Residual stress distribution plays a very important role in welded structures, the aim of present work is to find out the effect of different welding methods on the residual stress distribution by means of neutron diffraction measurements and FE models simulation. 4 mm thick DH-36 steel plates were butt welded by MIG welding process and 5 mm thick AA 2024 aluminium alloy plates were butt welded by friction stir welding process. Results show that residual stresses of MIG welding process are higher than those of friction stir welding process. The peak residual stress of MIG weld is close to the room temperature uniaxial yield strength of DH-36 while the peak residual stress of friction stir weld is just about 50% of the room temperature uniaxial yield strength of AA2024. The size effect of MIG welded and effect of welding speeds of friction stir welded on the residual stress distribution have also been studied in the paper.

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Research on the Residual Stress of Aluminum Alloy (LF6) Welding

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.546.127 ◽

2013 ◽

Vol 546 ◽

pp. 127-131

Author(s):

Zhi Qing Guo ◽

Qiu Juan Lv ◽

Yan Jiao Li ◽

Chang Jiang Liu ◽

Fang Xie

Keyword(s):

Numerical Simulation ◽

Residual Stress ◽

Experimental Study ◽

Aluminum Alloy ◽

Stress Distribution ◽

Residual Stress Distribution ◽

Welding Residual Stress ◽

Welding Seam ◽

Maximum Value

This paper use the software ANSYS to study the aluminum alloy (LF6) welding residual stress by numerical simulation and experimental study. The result indicates that the aluminum alloy (LF6) has the same residual stress distribution with others, there is a maximum value existing at the range of 4-5mm near the welding seam.

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DETERMINATION OF RESIDUAL STRESS DISTRIBUTION IN HIGH STRENGTH ALUMINUM ALLOY AFTER EDM

Advances in Science and Technology – Research Journal ◽

10.12913/22998624/68729 ◽

2017 ◽

Vol 11 (1) ◽

pp. 29-35 ◽

Cited By ~ 2

Author(s):

Zubair Butt ◽

Shahid Mehmood ◽

Amir Sultan ◽

Nazeer Anjum ◽

Waqas Anwar

Keyword(s):

Residual Stress ◽

Aluminum Alloy ◽

Stress Distribution ◽

High Strength ◽

Residual Stress Distribution ◽

High Strength Aluminum Alloy

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Analysis of Quenching and Stretching Processes of Aluminum Alloy Thick Plates

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.996.532 ◽

2014 ◽

Vol 996 ◽

pp. 532-537

Author(s):

Hai Gong ◽

Yun Xin Wu ◽

Zhao Peng Yang ◽

Kai Liao

Keyword(s):

Mechanical Properties ◽

Residual Stress ◽

Aluminum Alloy ◽

Stress Distribution ◽

Residual Stresses ◽

Residual Stress Distribution ◽

Thick Plates ◽

7050 Aluminum Alloy ◽

Heat Treated ◽

Strong Inhomogeneity

7050 aluminum alloy thick plates are usually heat treated and then aged to improve mechanical properties; however, residual stresses in the plates are developed during quenching. In this study, the influences of non-uniform factors on residual stresses in aluminum alloy thick plates during the quenching and stretching processes are studied. The results show strong inhomogeneity of the residual stress distribution in the plates, and the length of influenced area of the stretched plate is discussed.

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