Improved superplasticity and microstructural evolution of Ti2AlNb alloy sheet during electrically assisted superplastic gas bulging

2018 ◽  
Vol 99 (1-4) ◽  
pp. 773-787 ◽  
Author(s):  
Guofeng Wang ◽  
Xiao Li ◽  
Siyu Liu ◽  
Yibin Gu
Keyword(s):  
Microstructural Evolution ◽  
Alloy Sheet ◽  
Electrically Assisted ◽  
Ti2alnb Alloy

scholarly journals Numerical Simulation and Experiment of Electrically-Assisted Incremental Forming of Thin TC4 Titanium Alloy Sheet

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1335
Author(s):  
Bo Jiang ◽  
Wenbing Yang ◽  
Ziyang Zhang ◽  
Xifeng Li ◽  
Xueping Ren ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Incremental Forming ◽  
Simulation Method ◽  
Alloy Sheet ◽  
Cycle Period ◽  
Forming Process ◽  
Mechanical Coupling ◽  
Tc4 Titanium Alloy ◽  
Electrically Assisted ◽  
Alloy Part

In order to integrally manufacture the large TC4 titanium alloy part, an electrically-assisted incremental forming process is cleverly proposed to solve the traditional hot forming disadvantages of expensive heating furnaces and long cycle period. The two-step simulation method including thermal-electricity coupling simulation and thermo-mechanical coupling simulation was selected to predict the temperature variations and the sheet deformation behaviors. The electrically-assisted incremental forming experiment of thin TC4 titanium alloy sheet was performed. The highest prediction error is 6% for springback angles. The thrice forming at 10.9 A/mm2 satisfies the precision requirement of the designed part. Therefore, the two-step simulation method can effectively calculate the electrically-assisted incremental process. The electrically-assisted incremental forming technique is very promising for the integral producing large titanium alloy part.

scholarly journals Microstructural Evolution of Cold-Rolled AA7075 Sheet during Solution Treatment

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2734 ◽  
Author(s):  
Lu Wang ◽  
Xiaofang Yang ◽  
Joseph D. Robson ◽  
Robert E. Sanders ◽  
Qing Liu
Keyword(s):  
Electron Microscopy ◽  
Microstructural Evolution ◽  
Boundary Migration ◽  
Solution Treatment ◽  
Alloy Sheet ◽  
Slow Heating ◽  
Heating Process ◽  
Heating Rates ◽  
Heated Sample ◽  
Cold Rolled

The influence of heating rate on the microstructural evolution of a cold-rolled AA7075 alloy sheet during solution heat treatment was examined using electrical conductivity, scanning electron microscopy, X-ray diffraction, transmission electron microscopy and electron backscatter diffraction. The results indicate that the dissolution of soluble phases takes place during the heating process. The heating rates affect the dissolution process of soluble phases, and these phases completely dissolve into matrix after solution treatment. Recrystallized and elongated grains are produced after solution treatment by both fast and slow heating rates, while the grains of the rapidly heated sample are much finer. The elongated grains are attributed to the difference in the pinning pressure of boundary migration between the rolling and normal directions. The {111}<110> texture, as well as typical recrystallization textures, were found in both fast and slowly heated samples after solution treatment, but the textures, especially the {111}<110> component in the slow-heated sample, are much stronger, leading to an anisotropy in the tensile properties after artificial aging.

Influence of microstructural evolution on mechanical behaviour of AZ31 alloy sheet processed by flat extrusion container

2013 ◽  
Vol 29 (8) ◽  
pp. 1012-1016 ◽  
Author(s):  
Q S Yang ◽  
B Jiang ◽  
X Y Huang ◽  
G Y Zhou ◽  
J H Dai ◽  
...  
Keyword(s):  
Microstructural Evolution ◽  
Mechanical Behaviour ◽  
Az31 Alloy ◽  
Alloy Sheet

scholarly journals Influence of Extrusion Joint on Microstructural Evolution and Properties of Mg Alloy Sheet

2016 ◽  
Vol 29 (5) ◽  
pp. 475-482 ◽  
Author(s):  
Qing-Shan Yang ◽  
Zu-Jian Yu ◽  
Hu-Cheng Pan ◽  
Qing-Wei Dai ◽  
Jian-Hui Li
Keyword(s):  
Microstructural Evolution ◽  
Alloy Sheet ◽  
Mg Alloy
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