Research on deformation of 7050 aluminum alloy panels with stiffeners by pre-stress shot peen forming

2016 ◽  
Author(s):  
Mingtao Wang ◽  
Yuansong Zeng ◽  
Xia Huang ◽  
Fenggong Lv
Keyword(s):  
Aluminum Alloy ◽  
Peen Forming ◽  
7050 Aluminum Alloy ◽  
Aluminum Alloy Panels

Micromechanical behavior study of forged 7050 aluminum alloy by microindentation

2012 ◽  
Vol 37 ◽  
pp. 491-499 ◽  
Author(s):  
Jiang Li ◽  
Fuguo Li ◽  
Fengmei Xue ◽  
Jun Cai ◽  
Bo Chen
Keyword(s):  
Aluminum Alloy ◽  
Behavior Study ◽  
7050 Aluminum Alloy

scholarly journals A Characterization for the Hot Flow Behaviors of As-extruded 7050 Aluminum Alloy

2015 ◽  
Vol 34 (7) ◽  
pp. 643-650
Author(s):  
Guo-zheng Quan ◽  
Jin Liu ◽  
An Mao ◽  
Bo Liu ◽  
Jin-sheng Zhang
Keyword(s):  
Aluminum Alloy ◽  
Constitutive Model ◽  
Work Hardening ◽  
True Strain ◽  
Deep Understanding ◽  
Type Model ◽  
Compression Tests ◽  
Average Absolute Relative Error ◽  
7050 Aluminum Alloy ◽  
Peak Value

Abstract The deep understanding of flow behaviors of as-extruded 7050 aluminum alloy significantly contributes to the accuracy simulation for its various plastic forming processes. In order to obtain the improved Arrhenius-type equation with variable parameters for this alloy, a series of compression tests were performed at temperatures of 573 K, 623 K, 673 K, 723 K and strain rates of 0.01 s−1, 0.1 s−1, 1 s−1, 10 s−1 with a height reduction of 60% on Gleeble-1500 thermo-mechanical simulator. It is obvious that strain rate, strain and temperature all have a significant effect on the hot flow behaviors, and the true stress–true strain curves indicate three types after the peak value: decreasing gradually to a steady state with sustaining DRX softening till a balance with work hardening, decreasing continuously with sustaining increasing DRX softening beyond work hardening and maintaining higher stress level after the peak value with a balance between work hardening and DRV softening. Based on the experimental data, the improved Arrhenius-type constitutive model was established to predict the high temperature flow stress of as-extruded 7050 aluminum alloy. The accuracy and reliability of the improved Arrhenius-type model were further evaluated in terms of the correlation coefficient (R), here 0.98428, the average absolute relative error (AARE), here 3.5%. The results indicate that the improved Arrhenius-type constitutive model presents a good predictable ability.

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