Formation of nanograined structure and decomposition of supersaturated solid solution during high pressure torsion of Al–Zn and Al–Mg alloys

2004 ◽  
Vol 52 (15) ◽  
pp. 4469-4478 ◽  
Author(s):  
B.B Straumal ◽  
B Baretzky ◽  
A.A Mazilkin ◽  
F Phillipp ◽  
O.A Kogtenkova ◽  
...  
Keyword(s):  
Solid Solution ◽  
High Pressure ◽  
Supersaturated Solid Solution ◽  
High Pressure Torsion ◽  
Mg Alloys ◽  
Al Mg Alloys

Formation of Nanostructure during High-Pressure Torsion of Al-Zn, Al-Mg and Al-Zn-Mg Alloys

2005 ◽  
Vol 237-240 ◽  
pp. 739-744 ◽  
Author(s):  
A.A. Mazilkin ◽  
Olga A. Kogtenkova ◽  
Boris B. Straumal ◽  
Ruslan Valiev ◽  
B. Baretzky
Keyword(s):  
Solid Solution ◽  
High Pressure ◽  
Equilibrium State ◽  
Room Temperature ◽  
Supersaturated Solid Solution ◽  
High Pressure Torsion ◽  
Mg Alloys ◽  
Supersaturated Solid Solutions ◽  
Before And After ◽  
Second Phases

Structure and phase composition of binary Al–Zn, Al–Mg and ternary Al–Zn–Mg alloys were studied before and after high pressure torsion (HPT) with shear strain 300. The size of (Al) grains and crystals of reinforcing second phases decreases drastically after HPT reaching nanometer range. As a result of HPT, the Zn-rich (Al) supersaturated solid solution decomposes completely and reaches the equilibrium state corresponding to room temperature. The decomposition is less pronounced for Al–Mg and Al–Zn–Mg alloys. We conclude that the severe plastic deformation of supersaturated solid solutions can be considered as a balance between deformation-induced disordering and deformation-accelerated diffusion towards the equilibrium state.

Microstructure evolution and dislocation configurations in nanostructured Al–Mg alloys processed by high pressure torsion

2014 ◽  
Vol 24 (12) ◽  
pp. 3848-3857 ◽  
Author(s):  
Man-ping LIU ◽  
Ting-hui JIANG ◽  
Xue-feng XIE ◽  
Qiang LIU ◽  
Xue-feng LI ◽  
...  
Keyword(s):  
High Pressure ◽  
Microstructure Evolution ◽  
High Pressure Torsion ◽  
Mg Alloys ◽  
Al Mg Alloys

scholarly journals Special nanostructures in Al-Mg alloys subjected to high pressure torsion

2010 ◽  
Vol 20 (11) ◽  
pp. 2051-2056 ◽  
Author(s):  
Man-ping LIU ◽  
Hans J. ROVEN ◽  
Xin-tao LIU ◽  
Maxim MURASHKIN ◽  
Ruslan Z. VALIEV ◽  
...  
Keyword(s):  
High Pressure ◽  
High Pressure Torsion ◽  
Mg Alloys ◽  
Al Mg Alloys

Phase Transformations in the AlMg Alloys Driven by High‐Pressure Torsion

2021 ◽  
pp. 2100210
Author(s):  
Olga Kogtenkova ◽  
Boris Borisovich Straumal ◽  
Andrey Mazilkin ◽  
Tomasz Czeppe ◽  
Pawel Zięba
Keyword(s):  
High Pressure ◽  
Phase Transformations ◽  
High Pressure Torsion ◽  
Mg Alloys ◽  
Al Mg Alloys

Grain refinement in nanostructured Al–Mg alloys subjected to high pressure torsion

2010 ◽  
Vol 45 (17) ◽  
pp. 4659-4664 ◽  
Author(s):  
Manping Liu ◽  
Hans J. Roven ◽  
Xintao Liu ◽  
Maxim Murashkin ◽  
Ruslan Z. Valiev ◽  
...  
Keyword(s):  
High Pressure ◽  
Grain Refinement ◽  
High Pressure Torsion ◽  
Mg Alloys ◽  
Al Mg Alloys

Hardness of Nanostructured Al-Zn, Al-Mg and Al-Zn-Mg Alloys Obtained by High-Pressure Torsion

2006 ◽  
Vol 249 ◽  
pp. 155-160 ◽  
Author(s):  
A.A. Mazilkin ◽  
B. Baretzky ◽  
S. Enders ◽  
Olga A. Kogtenkova ◽  
Boris B. Straumal ◽  
...  
Keyword(s):  
Solid Solution ◽  
High Pressure ◽  
Room Temperature ◽  
High Pressure Torsion ◽  
Mg Alloys ◽  
Solid Solution Hardening ◽  
Second Phase ◽  
Cast State ◽  
Supersaturated Solid Solutions ◽  
Mg Content

Microstructure and hardness of ternary Al–Zn–Mg alloys were studied both in as cast state and after high pressure torsion (HPT) with 5 torsions (shear strain about 6). The size of (Al) grains and of reinforcing second phase precipitates decreases drastically after HPT reaching nanometer range. During HPT, the Zn- and Mg-rich supersaturated (Al) solid solution decomposes and reaches the equilibrium state corresponding to the room temperature. In the as cast state the hardness of the supersaturated solid solutions increases with increasing Zn and Mg content due to the solid-solution hardening. However, after HPT the work hardening and Hall-Petch hardening due to the decreasing grain size competes with softening due to the decomposition of a supersaturated solid solution. In the net effect, the severe plastic deformation results in softening of ternary Al–Zn– Mg alloys.

Understanding formation of Mg-depletion zones in Al-Mg alloys under high pressure torsion

2019 ◽  
Vol 35 (5) ◽  
pp. 858-864 ◽  
Author(s):  
Jing Xue ◽  
Shenbao Jin ◽  
Xianghai An ◽  
Xiaozhou Liao ◽  
Jiehua Li ◽  
...  
Keyword(s):  
High Pressure ◽  
High Pressure Torsion ◽  
Mg Alloys ◽  
Al Mg Alloys

scholarly journals Effect of Mg on microstructure and mechanical properties of Al-Mg alloys produced by high pressure torsion

2019 ◽  
Vol 159 ◽  
pp. 137-141 ◽  
Author(s):  
Yang Liu ◽  
Manping Liu ◽  
Xuefei Chen ◽  
Yang Cao ◽  
Hans J. Roven ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
High Pressure Torsion ◽  
Mg Alloys ◽  
Microstructure And Mechanical Properties ◽  
Al Mg Alloys
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