scholarly journals Residual Stress Distribution of Asymmetric Quenching in Al-Zn-Mg-Cu Aluminum Alloy Plate

2021 ◽  
Vol 09 (04) ◽  
pp. 11-18
Author(s):  
Yanan Li ◽  
Guohui Shi
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Stress Distribution ◽  
Residual Stress Distribution ◽  
Alloy Plate ◽  
Aluminum Alloy Plate

Residual Stress Distribution of Non-Uniform Quenching in Al-Zn-Mg-Cu Aluminum Alloy Thick Plate

2020 ◽  
Vol 1003 ◽  
pp. 11-19
Author(s):  
Ya Nan Li ◽  
Yong An Zhang ◽  
Hong Lei Liu ◽  
Xin Yu Lv ◽  
Xi Wu Li ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Residual Stress ◽  
Aluminum Alloy ◽  
Heat Transfer Coefficient ◽  
Stress Distribution ◽  
Transfer Coefficient ◽  
Stress Level ◽  
Transverse Direction ◽  
Residual Stress Distribution ◽  
Surface Quenching

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.

Residual stress distribution and microstructure in the friction stir weld of 7075 aluminum alloy

2015 ◽  
Vol 50 (22) ◽  
pp. 7262-7270 ◽  
Author(s):  
Pengfei Ji ◽  
Zhongyu Yang ◽  
Jin Zhang ◽  
Lin Zheng ◽  
Vincent Ji ◽  
...  
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Stress Distribution ◽  
Residual Stress Distribution ◽  
Friction Stir Weld ◽  
7075 Aluminum Alloy ◽  
Friction Stir

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

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.

Residual stress relief of welded aluminum alloy plate using ultrasonic vibration

Ultrasonics ◽  
2020 ◽  
Vol 107 ◽  
pp. 106164
Author(s):  
Qinglong Zhang ◽  
Lei Yu ◽  
Xiaofeng Shang ◽  
Su Zhao
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Ultrasonic Vibration ◽  
Stress Relief ◽  
Alloy Plate ◽  
Aluminum Alloy Plate

scholarly journals Analysis of Quenching and Stretching Processes of Aluminum Alloy Thick Plates

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.

FEM and Contour Method Study of Quenching Residual Stress of 7050 Aluminum Alloy Cross-Shaped Component

2017 ◽  
Vol 887 ◽  
pp. 89-95 ◽  
Author(s):  
Yang Li ◽  
Yun Xin Wu ◽  
Hai Gong ◽  
Feng Xiao
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Stress Distribution ◽  
Stress Reduction ◽  
Residual Stress Distribution ◽  
Contour Method ◽  
Fe Model ◽  
Residual Stress Field ◽  
Heat Transfer Theory ◽  
7050 Aluminum Alloy

In order to study the quenching residual stress of typical aluminum alloy component used in aerospace, the finite element (FE) model of quenching process of 7050 aluminum alloy cross-shaped component was established based on heat transfer theory and elastic-plastic mechanics theory, the distribution regularities of quenching residual stress field of cross-shaped component was analyzed. The results indicate that the residual stress distribution of web of cross-shaped component is similar to the residual stress distribution of thick plate, the large tensile stress concentration is exist in web plate and the connection part of the stiffener with a certain influence area. The error data of the component contour deformation were processed and the component deformation contour was fitted, which makes the test result of the contour method and FE simulation result have good consistency. The results of the study provides guidance for quenching residual stress reduction of aviation aluminum alloy components and provides the basis for calculating of machining deformation of monolithic component.

Influences of Initial Residual Stresses on Milling Distortion for Thick Aero-Aluminum-Alloy Plate

2011 ◽  
Vol 381 ◽  
pp. 44-47
Author(s):  
Hun Guo ◽  
Dun Wen Zuo ◽  
Guo Xing Tang ◽  
W.M. Gan
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Residual Stresses ◽  
Analytical Method ◽  
Milling Process ◽  
Alloy Plate ◽  
Machining Distortion ◽  
Aluminum Alloy Plate

Formulae of stress re-distribution and distortion by stress releasing during milling process are deduced to Initial Residual Stresses. Theory prediction of milling deformation due to residual stress is finished, and some calculating equation is given for the deformation solution. By means of these researches, the mechanism of the milling deformation due to residual stress is analyzed, the machining distortion caused by residual stress are analyzed and summarized using the analytical method.

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