EFFECTS OF THERMOMECHANICAL TREATMENTS ON THE THERMAL EXPANSION COEFFICIENT OF SOME ALUMINIUM ALLOYS
Keywords:
Aluminium alloys, thermal expansion coefficient, anisotropy, conventional ingot casting, Direct Cast Casting, Twin Roller Melt SpinningAbstract
The aim of this study was the determination of the thermal expansion coefficient α (T) in relation to the temperature of the three following aluminium alloys:
- Al-6%Zn-3%Mg obtained by conventional ingot casting
- Al-0.5%Mg-0.88%Si obtained by Direct Cast Casting
- Al-1.88%Mn-0.8%Mg obtained by Twin Roller Melt Spinning
These alloys have undergone various thermal and mechanical conditions.
The main results show that the Al-6%Zn-3%Mg alloy exhibits a very weak anisotropy meanwhile that Al-Mg-Si and Al-Mn-Mg alloys exhibit, on the contrary, a quite strong anisotropy on the curves of α (T).
Downloads
References
H. Westengen, O. Reissov, and L.Auran, Aluminum, 56, (1980), p. 768 - 776
N.A. Belov, Materials Sciences Forum, 217-222, (1996), p. 293 - 298
E. Babic, E. Girt, R. Krnik, and B. Leontic, J. Phys., 3, (1970), p. 1014 - 1015
H. S. Chen and C. E. Miller, Rev. Sci. Instrum., 41, (1970), p. 1237 - 1238
M. Benabdoun, T. Dorbani, and S. Hamamda, Ann. Chim., 2007, 32(1), pp. 1-9
S Hamamda, A. Bouberthakh, M. Benabdoun, and R. Guemini, Ann. Chim. Sci. Mat., 25, (2000), p. 401- 409
A.Bouberthakh, M .Benabdoun, and S. Hamamda, Ann. Chim. Sci. Mat., 26, (2001), p. 29 - 33
