Microstructure and RRA treatment of LFEC 7075 aluminum alloy extruded bars

It is the objective of this study to investigate the effect of ECAP processing and heat treatment on the mechanical properties of the UFG 7075 alloy. Also the effect of post ECAP heat treatment is investigated. The alloy is processed by ECAP after annealing as well as solution treatment to produce an UFG structure. Furthermore mechanical properties and their variations during annealing and aging are investigated. The hardness of the pre-ECAP annealed and the pre-ECAP solutionised 7075 aluminum alloy has increased significantly compared with that of the CG sample. Also hardness of ECAPed specimen has not experienced significant changes in post-ECAP heat treatment and indicated that the alloy had approximately good thermal stability.

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Resistance element welding of 7075 aluminum alloy to Ti6Al4V titanium alloy

Journal of Manufacturing Processes ◽

10.1016/j.jmapro.2021.08.047 ◽

2021 ◽

Vol 70 ◽

pp. 300-306

Author(s):

Shuai Wang ◽

Yang Li ◽

Yue Yang ◽

Sunusi Marwana Manladan ◽

Zhen Luo

Keyword(s):

Titanium Alloy ◽

Aluminum Alloy ◽

7075 Aluminum Alloy ◽

Ti6al4v Titanium Alloy ◽

Resistance Element Welding

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The extraordinary effect of very low content of hybrid carbonaceous reinforcement on the microstructural and mechanical properties of 7075 aluminum alloy

Archives of Civil and Mechanical Engineering ◽

10.1007/s43452-021-00210-w ◽

2021 ◽

Vol 21 (2) ◽

Author(s):

H. R. Ezatpour ◽

M. Torabi Parizi ◽

G. R. Ebrahimi

Keyword(s):

Mechanical Properties ◽

Aluminum Alloy ◽

7075 Aluminum Alloy

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Observation of the microstructure in the adiabatic shear band of 7075 aluminum alloy

Materials Science and Engineering A ◽

10.1016/j.msea.2010.02.024 ◽

2010 ◽

Vol 527 (15) ◽

pp. 3529-3535 ◽

Cited By ~ 54

Author(s):

D.H. Li ◽

Y. Yang ◽

T. Xu ◽

H.G. Zheng ◽

Q.S. Zhu ◽

...

Keyword(s):

Aluminum Alloy ◽

Shear Band ◽

Adiabatic Shear Band ◽

Adiabatic Shear ◽

7075 Aluminum Alloy

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High Strain Rate Superplasticity in a Zr and Sc Modified 7075 Aluminum Alloy Produced by ECAP

Materials Science Forum ◽

10.4028/www.scientific.net/msf.584-586.164 ◽

2008 ◽

Vol 584-586 ◽

pp. 164-169 ◽

Cited By ~ 6

Author(s):

Krystof Turba ◽

Premysl Malek ◽

Edgar F. Rauch ◽

Miroslav Cieslar

Keyword(s):

Aluminum Alloy ◽

High Strain Rate ◽

Strain Rate ◽

High Strain ◽

Rate Sensitivity ◽

7075 Aluminum Alloy ◽

Fine Grained ◽

Angular Pressing ◽

Average Grain Size ◽

Elongation To Failure

Equal-channel angular pressing (ECAP) at 443 K was used to introduce an ultra-fine grained (UFG) microstructure to a Zr and Sc modified 7075 aluminum alloy. Using the methods of TEM and EBSD, an average grain size of 0.6 1m was recorded after the pressing. The UFG microstructure remained very stable up to the temperature of 723 K, where the material exhibited high strain rate superplasticity (HSRSP) with elongations to failure of 610 % and 410 % at initial strain rates of 6.4 x 10-2 s-1 and 1 x 10-1 s-1, respectively. A strain rate sensitivity parameter m in the vicinity of 0.45 was observed at temperatures as high as 773 K. At this temperature, the material still reached an elongation to failure of 430 % at 2 x 10-2 s-1. These results confirm the stabilizing effect of the Zr and Sc additions on the UFG microstructure in a 7XXX series aluminum alloy produced by severe plastic deformation.

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