scholarly journals Rapid dislocation-mediated solute repartitioning towards strain-aging hardening in a fine-grained dilute magnesium alloy

2022 ◽  
Vol 10 (1) ◽  
pp. 21-28
Author(s):  
Zhen-Ming Hua ◽  
Min Zha ◽  
Zhao-Yuan Meng ◽  
Shen-Bao Jin ◽  
Gang Sha ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Strain Aging ◽  
Fine Grained ◽  
Aging Hardening

scholarly journals Fracture behavior of twin induced ultra-fine grained ZK61 magnesium alloy under high strain rate compression

2019 ◽  
Vol 8 (4) ◽  
pp. 3475-3486 ◽  
Author(s):  
Abdul Malik ◽  
Wang Yangwei ◽  
Cheng Huanwu ◽  
Muhammad Abubaker Khan ◽  
Faisal Nazeer ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
High Strain Rate ◽  
Strain Rate ◽  
Fracture Behavior ◽  
High Strain ◽  
Fine Grained ◽  
Strain Rate Compression

Network-shaped fine-grained microstructure and high ductility of magnesium alloy fabricated by cyclic extrusion compression

2008 ◽  
Vol 58 (4) ◽  
pp. 311-314 ◽  
Author(s):  
Y.J. Chen ◽  
Q.D. Wang ◽  
H.J. Roven ◽  
M.P. Liu ◽  
M. Karlsen ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
High Ductility ◽  
Fine Grained ◽  
Cyclic Extrusion Compression

The relationship between dynamic strain aging and serrated flow behaviour in magnesium alloy

2017 ◽  
Vol 97 (6) ◽  
pp. 235-240 ◽  
Author(s):  
W. H. Wang ◽  
D. Wu ◽  
S. S. Shah ◽  
J. H. Ni ◽  
R. S. Chen ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Flow Behaviour ◽  
Dynamic Strain ◽  
Serrated Flow ◽  
The Relationship

scholarly journals STRUCTURE AND PROPERTIES OF AZ31 MAGNESIUM ALLOY AFTER COMBINATION OF HOT EXTRUSION AND ECAP

2017 ◽  
Vol 23 (3) ◽  
pp. 222 ◽  
Author(s):  
Ondřej Hilšer ◽  
Stanislav Rusz ◽  
Wojciech Maziarz ◽  
Jan Dutkiewicz ◽  
Tomasz Tański ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Hot Extrusion ◽  
Az31 Magnesium Alloy ◽  
Initial State ◽  
Fine Grained ◽  
Angular Pressing ◽  
Ecap Process ◽  
Average Grain Size ◽  
Fine Grained Structure

<p>Equal channel angular pressing (ECAP) method was used for achieving very fine-grained structure and increased mechanical properties of AZ31 magnesium alloy. The experiments were focused on the, in the initial state, hot extruded alloy. ECAP process was realized at the temperature 250°C and following route Bc. It was found that combination of hot extrusion and ECAP leads to producing of material with significantly fine-grained structure and improves mechanical properties. Alloy structure after the fourth pass of ECAP tool with helix matrix 30° shows a fine-grained structure with average grain size of 2 µm to 3 µm and high disorientation between the grains. More experimental results are discussed in this article.</p>

Strength and Formability of Fine-Grained Laminated Magnesium Alloy

2013 ◽  
Vol 753 ◽  
pp. 465-468
Author(s):  
Masafumi Noda ◽  
Kunio Funami
Keyword(s):  
Fracture Toughness ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Surface Properties ◽  
Laminated Composite ◽  
Mg Alloy ◽  
Roll Bonding ◽  
Fine Grained ◽  
Solid Diffusion ◽  
Laminated Material

The development of laminated composite Mg alloy sheets, prepared by solid diffusion and roll bonding, is an effective way of improving the stiffness and surface properties of these materials while retaining their lightness. Laminated composites consisting of a core of Mg alloy between sheets of A5083 alloy as the coating material with Ti foil interlayers were prepared by solid diffusion and roll bonding. The laminated material had a strength and was resistant to cracking during deformation. Compounds that were formed and dispersed at the bonding interface between the Al and Mg alloys subjected to grain refinement improved the fracture toughness and strength of the composites, and it was important that these compounds were formed discontinuously. The fracture toughness of the laminated composite was twice that of the base Mg alloy, and its Young's modulus was 57 GPa.

Effect of Microstructure on Hot Bulging Deformation for AZ31 Magnesium Alloy Sheet with Resistance Heating

2014 ◽  
Vol 783-786 ◽  
pp. 537-540
Author(s):  
Kai Feng Zhang ◽  
Jing Yuan Liu ◽  
Chao Li
Keyword(s):  
Magnesium Alloy ◽  
Pulse Current ◽  
Alloy Sheet ◽  
Az31 Magnesium Alloy ◽  
Coarse Grained ◽  
Wind Force ◽  
Magnesium Alloy Sheet ◽  
Fine Grained ◽  
Az31 Magnesium Alloy Sheet ◽  
Electron Wind

To enhance the heating efficiency and the formability of AZ31 magnesium alloy, the assistance heating method is adopted during the hot bulging process. The free bulging test of coarse grained and fine grained AZ31 magnesium alloy sheet was carried out. During the forming process, the effects of pulse current on the formed sheet combine both thermoelectricity and electro-plasticity. Directional and asymmetrical deformation of the coarse-grained AZ31 magnesium alloy sheet by the effect of pulse current is observed and analyzed. But in the same processing condition, the deformation of fine grained AZ31 magnesium alloy sheet is symmetrical. To investigate the influence of electron wind force on pulse current auxiliary bulging process, the simulation of AZ31 magnesium alloy pulse current auxiliary bulging based on the electron wind force value calculated by mathematical model was performed using the Marc software. The bulging simulation result showed a special phenomenon that the shape of the bulging specimen is unsymmetrical and the dome deviated from the symmetry axis to the side of positive pole. The simulation results were basically consistent with the experimental results. The deformation properties, microstructure characteristics, dislocation movement of the AZ31 magnesium alloy during gas bulging processing by the pulse current are investigated.

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