scholarly journals Effects of Cryogenic Treatment on the Microstructure and Residual Stress of 7075 Aluminum Alloy

Metals ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 273
Author(s):  
Lijun Wei ◽  
Dawei Wang ◽  
Haisheng Li ◽  
Di Xie ◽  
Fan Ye ◽  
...  
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Cryogenic Treatment ◽  
7075 Aluminum Alloy

Effects of Cryogenic Treatment on Residual Stress and Precipitation for 7075 Aluminum Alloy

2013 ◽  
Vol 51 (5) ◽  
pp. 333-340 ◽  
Author(s):  
Young-Rae Cho ◽  
Hoi-Bong Kim ◽  
Dong-Yong Kim ◽  
Dae-Hoon Ko ◽  
Byung-Min Kim
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Cryogenic Treatment ◽  
7075 Aluminum Alloy

scholarly journals Effects of Cryogenic Treatment Cycles on Residual Stress and Mechanical Properties for 7075 Aluminum Alloy

2013 ◽  
Vol 23 (1) ◽  
pp. 18-23 ◽  
Author(s):  
Hoi-Bong Kim ◽  
Eun-Wook Jeong ◽  
Dae-Hoon Ko ◽  
Byung-Min Kim ◽  
Young-Rae Cho
Keyword(s):  
Mechanical Properties ◽  
Residual Stress ◽  
Aluminum Alloy ◽  
Cryogenic Treatment ◽  
7075 Aluminum Alloy

Finite Element Simulation Analysis on Residual Stress Relief of 7075 Aluminum Alloy Ring

2021 ◽  
Vol 1032 ◽  
pp. 135-140
Author(s):  
Shao Feng Wu ◽  
Xiang Sheng Gao ◽  
Xian Rang Zhang ◽  
Han Jun Gao
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Simulation Analysis ◽  
Material Model ◽  
Stress Relief ◽  
Isotropic Hardening ◽  
7075 Aluminum Alloy ◽  
Vibration Stress ◽  
Structural Parts ◽  
Creep Constitutive Model

Vibration stress relief (VSR) and thermal stress relief (TSR) are important method to eliminate the residual stress of structural parts. The thermal vibratory stress relief (TVSR) is a new method to decrease and homogenize the residual stress. Based on the stress relaxation tests and the equivalent vibration equation of modal analysis, the creep constitutive model and the bilinear isotropic hardening plasticity material model (BISO) are combined to establish the numerical simulation model of TVSR of 7075 aluminum alloy ring part. The simulation results show that four different initial blank residual stress levels are obtained after quenching process, and the residual stress elimination and homogenization effect of TSR and TVSR is better than that of VSR. TVSR has a better effect on both residual stress elimination and homogenization, and the residual stress relief rate can reach more than 20%.

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

Numerical Simulation of Residual Stress Induced in 7075 Aluminum Alloy by Repeated High-Power Laser Pulses

2015 ◽  
Vol 42 (12) ◽  
pp. 1203002
Author(s):  
张兴权 Zhang Xingquan ◽  
李欢 Li Huan ◽  
黄志来 Huang Zhilai ◽  
张鑫 Zhang Xin ◽  
佘建平 She Jianping ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Aluminum Alloy ◽  
High Power ◽  
Laser Pulses ◽  
7075 Aluminum Alloy ◽  
High Power Laser ◽  
Power Laser

Measurements of Residual Stress and Angular Distortion of 7075 Aluminum Alloy after Gas Tungsten Arc Welding

2013 ◽  
Vol 302 ◽  
pp. 452-456
Author(s):  
Shih Jeh Wu ◽  
Chiao Wei Chung ◽  
Chen Ming Kuo
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Arc Welding ◽  
Imaging System ◽  
Diffraction Method ◽  
Gas Tungsten Arc Welding ◽  
Angular Distortion ◽  
7075 Aluminum Alloy ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

7075 aluminum alloy is one of the most popular materials for structure. There are lots of demands for welding these structural materials. During the fast high temperature heating and cooling process serious residual stress is generated that causes the deterioration of structure strength. In this study, we investigate the residual stress induced in 7075 aluminum alloy after gas tungsten arc welding. X-ray diffraction method is applied to measure the residual stress under different joint angles. The angular distortion is also measured by a 3-D imaging system. Results show that both residual stress and angular distortion increase with the preparation angle.

scholarly journals Experimental Analysis and Prediction Model of Milling-Induced Residual Stress of Aeronautical Aluminum Alloys

2021 ◽  
Vol 11 (13) ◽  
pp. 5881
Author(s):  
Shouhua Yi ◽  
Yunxin Wu ◽  
Hai Gong ◽  
Chenxi Peng ◽  
Yongbiao He
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Prediction Model ◽  
End Milling ◽  
Orthogonal Experiment ◽  
7075 Aluminum Alloy ◽  
Side Milling ◽  
Milling Parameters ◽  
Thin Walled ◽  
Machining Deformation Prediction

Aeronautical thin-walled frame workpieces are usually obtained by milling aluminum alloy plates. The residual stress within the workpiece has a significant influence on the deformation due to the relatively low rigidity of the workpiece. To accurately predict the milling-induced residual stress, this paper describes an orthogonal experiment for milling 7075 aluminum alloy plates. The milling-induced residual stress at different surface depths of the workpiece, without initial stress, is obtained. The influence of the milling parameters on the residual stress is revealed. The parameters include milling speed, feed per tooth, milling width, and cutting depth. The experimental results show that the residual stress depth in the workpiece surface is within 0.12 mm, and the residual stress depth of the end milling is slightly greater than that of the side milling. The calculation models of residual stress and milling parameters for two milling methods are formulated based on regression analysis, and the sensitivity coefficients of parameters to residual stress are calculated. The residual stress prediction model for milling 7075 aluminum alloy plates is proposed based on a back-propagation neural network and genetic algorithm. The findings suggest that the proposed model has a high accuracy, and the prediction error is between 0–14 MPa. It provides basic data for machining deformation prediction of aluminum alloy thin-walled workpieces, which has significant application potential.

Sign in / Sign up

Export Citation Format

Share Document