Abstract
To develop and design mg-based nanoalloys with excellent properties, it is necessary to explore the forming process. In this paper, to explore the effect of different loading directions on the phase transformation of magnesium alloy, the model of AZ31 magnesium alloy was established, the process of Uniaxial Compression (UC) of magnesium alloy in different directions was simulated, the changes of atomic position and phase structure were observed, and the phase transformation mechanism of AZ31 magnesium alloy under uniaxial compression under different loading directions was summarized. The conclusions are as follows: the stress and strain, potential energy and volume change, void evolution, phase structure change and dislocation evolution of magnesium alloy are consistent, and there is no significant difference. In the process of uniaxial compression, the phase transformation of hexagonal closely packed (HCP) → face-centered cubic (FCC) is the main, and its structure evolves into HCP → Other → FCC. Shockley partial dislocations always precede FCC stacking faults by about 4.5%, and Shockley partial dislocations surround FCC stacking faults. In this paper, the phase transformation mechanism of AZ31 magnesium alloy under uniaxial compression under different loading directions is summarized, which provides a theoretical basis for the processing and development of magnesium-based nanoalloys.
Highlights
To develop and design mg-based nanoalloys with excellent properties, it is necessary to explore the forming process
It is found that a series of "hexagonal closely packed (HCP) → body-centered cubic (BCC) → face-centered cubic (FCC)" phase transitions occur when the tensile load is in the direction of [2110] ; when the tensile load is in the direction of [0110], the slip of prismatic dislocations controls the deformation of the crystals; the prismatic dislocations can be dissociated into Shockley dislocations on the base, resulting in the formation of basal stacking faults
When the magnesium alloy is compressed, the HCP structure of magnesium alloy changes and may turn from the original HCP-M phase to an angled HCP-N phase, or caused by the change of atomic position, one is to transform into BCC phase, the other is to transform into FCC phase
Summary
To develop and design mg-based nanoalloys with excellent properties, it is necessary to explore the forming process.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
