Deformation Behavior and Constitutive Equation Coupled the Grain Size of Semi-Solid Aluminum Alloy

2010 ◽  
Vol 19 (9) ◽  
pp. 1337-1343 ◽  
Author(s):  
Yalin Lu ◽  
Miaoquan Li ◽  
Xingcheng Li
2012 ◽  
Vol 504-506 ◽  
pp. 345-350 ◽  
Author(s):  
Adriana Neag ◽  
Véronique Favier ◽  
Mariana Pop ◽  
Eric Becker ◽  
Régis Bigot

The deformation behavior of semi-solid aluminum alloy is strongly dependent on the microstructure. This paper illustrates several experimental research works concerning thixoextrusion of 7075 aluminum alloy which was carried out at “Arts et Métiers ParisTech” of Metz. Inductive re-heating of the aluminum billet is the method used in order to obtain the target liquid fraction for thixoextrusion. To minimize the heat losses, a sample obtained from a direct extruded bar is inserted in a die for reheating in semisolid state and thixoextrusion. During the experimental re-heating process, the temperature was directly controlled by using thermocouples for temperature measurements in the sample and also in the die. The influence of different working ram speeds and reheating temperature on the microstructure evolution was studied by optical microscopy. The experimental results on extrusion load and microstructure evolution of the component are reported.


2008 ◽  
Vol 141-143 ◽  
pp. 647-652 ◽  
Author(s):  
Zhi Ming Du ◽  
Xiao Hua Zhang ◽  
Qiong Wang ◽  
Shou Jing Luo

By semi-solid aluminum alloy compression test, deformation mechanism of semi-solid aluminum alloy was investigated, the thixotropic strength existing in semi-solid aluminum alloy was verified and the influences of temperature and strain rate on the deformation mechanism and thixotropic strength were discussed. The results show that there are 4 stages in the process of compression deformation for semi-solid aluminum alloy: stress swift growth stage, stress drop stage, steady stress stage and stress gradual growth stage. The semi-solid billet has a thixotropic strength, which is sensitive to temperature and strain rate. The higher the temperature or the higher the strain rate is, the smaller the thixotropic strength of the semi-solid alloy.


2021 ◽  
pp. 130756
Author(s):  
Yan Liu ◽  
Xiaolin Chen ◽  
Minqiang Gao ◽  
Renguo Guan

2006 ◽  
Vol 60 (2) ◽  
pp. 180-184 ◽  
Author(s):  
H.W. Liu ◽  
C. Guo ◽  
Y. Cheng ◽  
X.F. Liu ◽  
G.J. Shao

2011 ◽  
Vol 61 (4) ◽  
pp. 135-141 ◽  
Author(s):  
Hiroyuki Chiba ◽  
Toru Ueki ◽  
Takanari Toriyama ◽  
Itaru Endo ◽  
Takamitsu Kobayashi ◽  
...  

Author(s):  
Yuichiro Murakami ◽  
Kenji Miwa ◽  
Masayuki Kito ◽  
Takashi Honda ◽  
Naoyuki Kanetake ◽  
...  

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