Developing grain refinement and superplasticity in a magnesium alloy processed by high-pressure torsion

2008 ◽  
Vol 488 (1-2) ◽  
pp. 117-124 ◽  
Author(s):  
Masaaki Kai ◽  
Zenji Horita ◽  
Terence G. Langdon
Keyword(s):  
High Pressure ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
High Pressure Torsion

Effect of high-pressure torsion on grain refinement, strength enhancement and uniform ductility of EZ magnesium alloy

2018 ◽  
Vol 212 ◽  
pp. 323-326 ◽  
Author(s):  
Krzysztof Bryła ◽  
Jerzy Morgiel ◽  
Marek Faryna ◽  
Kaveh Edalati ◽  
Zenji Horita
Keyword(s):  
High Pressure ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
High Pressure Torsion ◽  
Strength Enhancement

Microstructure Evolution during High Pressure Torsion of AZ80 Magnesium Alloy

2008 ◽  
Vol 584-586 ◽  
pp. 300-305 ◽  
Author(s):  
Dogan Arpacay ◽  
Sang Bong Yi ◽  
Miloš Janeček ◽  
Adem Bakkaloglu ◽  
Lothar Wagner
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
High Pressure ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Microstructure Evolution ◽  
Significant Variation ◽  
High Pressure Torsion ◽  
Grain Structure ◽  
Az80 Magnesium Alloy

The microstructure evolution during high pressure torsion and its influence on the mechanical properties of AZ80 magnesium alloy is presented in this study. Significant grain refinement was observed after high pressure torsion, while the homogeneity of the grain structure increases with the number of revolutions. Grain size decreases to about 50 nm after 15 revolutions. The microhardness profiles measured at through-thickness and through-width directions show no significant variation at different positions of the sample. Moreover, the negligible effect of the revolution number on the microhardness value was observed.

GRAIN REFINEMENT AND MICROSTRUCTURE EVOLUTION IN ALUMINUM A2618 ALLOY BY HIGH-PRESSURE TORSION

2016 ◽  
Vol 78 (6-9) ◽  
Author(s):  
Intan Fadhlina Mohamed ◽  
Seungwon Lee ◽  
Kaveh Edalati ◽  
Zenji Horita ◽  
Shahrum Abdullah ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
High Pressure ◽  
Grain Refinement ◽  
Room Temperature ◽  
Rotation Speed ◽  
High Pressure Torsion ◽  
Applied Pressure ◽  
Saturation Level ◽  
Microstructural Refinement ◽  
Average Grain Size

This work presents a study related to the grain refinement of an aluminum A2618 alloy achieved by High-Pressure Torsion (HPT) known as a process of Severe Plastic Deformation (SPD). The HPT is conducted on disks of the alloy under an applied pressure of 6 GPa for 1 and 5 turns with a rotation speed of 1 rpm at room temperature. The HPT processing leads to microstructural refinement with an average grain size of ~250 nm at a saturation level after 5 turns. Gradual increases in hardness are observed from the beginning of straining up to a saturation level. This study thus suggests that hardening due to grain refinement is attained by the HPT processing of the A2618 alloy at room temperature.

Strengthening of age-hardenable WE43 magnesium alloy processed by high pressure torsion

2016 ◽  
Vol 170 ◽  
pp. 5-9 ◽  
Author(s):  
E.A. Lukyanova ◽  
N.S. Martynenko ◽  
I. Shakhova ◽  
A.N. Belyakov ◽  
L.L. Rokhlin ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnesium Alloy ◽  
High Pressure Torsion ◽  
We43 Magnesium Alloy

scholarly journals Grain size and microhardness evolution during annealing of a magnesium alloy processed by high-pressure torsion

2015 ◽  
Vol 4 (1) ◽  
pp. 14-17 ◽  
Author(s):  
Livia Raquel C. Malheiros ◽  
Roberto Braga Figueiredo ◽  
Terence G. Langdon
Keyword(s):  
Grain Size ◽  
High Pressure ◽  
Magnesium Alloy ◽  
High Pressure Torsion

Evolution in hardness and texture of a ZK60A magnesium alloy processed by high-pressure torsion

2015 ◽  
Vol 630 ◽  
pp. 90-98 ◽  
Author(s):  
Han-Joo Lee ◽  
Sang Kyung Lee ◽  
Ki Ho Jung ◽  
Geun An Lee ◽  
Byungmin Ahn ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnesium Alloy ◽  
High Pressure Torsion
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