FE Simulation Investigation of Magnesium Alloy by Equal Channel Angular Processing

Abstract

Magnesium alloy is one of the structure metals of great potential. The hcp structure makes its plasticity is poor at room temperature, which severely limits the development of magnesium alloy. Magnesium alloy plastic problem can be resolved through grain refinement method, and equal channel angular processing is one of the more effective methods of grain refinement. In this paper, two-dimensional dynamic simulation of equal channel angular processing for magnesium alloy were done with the finite element software. The deformation of magnesium alloy was analyzed when die angle and die corner angle were different. The results show that: in the main deformation zone, when die angles were different, the sample deformation in the horizontal direction is very uniform. But in the sample longitudinally direction, the greater the die angle, the more uniform the sample deformation. Die corner angle has no significant effect on the uniformity of the longitudinally deformation of the sample, but its affects the size of the dead zone and sample warpage.

Influence of Surfactant Types on the Anti-Corrosion Performance of Phosphate Chemical Conversion Coated Mg-8wt.%Li Alloy

“…Magnesium (Mg) is one of the most abundant elements in the world, and its density is only 1.74 g/cm 3 . Due to the excellent properties, such as good machining performance, electromagnetic shielding ability, biocompatibility and recyclability, Mg alloys are considered to be the best potential material for replacing steels and aluminum (Al) alloys in the fields of automotive, aerospace and electronics [1][2][3][4][5]. It has been reported that the addition of lithium (Li) could improve the mechanical properties of Mg alloys and further decrease their densities [6].…”

“…Generally, for the preparation of chemical conversion surface films, the category of additive in surfactants plays an important role, and their inhibiting effect on corrosion development has been widely studied [8]. Generally, the main functions of additives consist of the following: (1) promoting the formation of a coating film; (2) reducing particle crystallinity; (3) controlling the conversion rate; (4) increasing the hydrophobicity of the metal surface; and (5) enhancing the solubility of the main components of the conversion fluid in water [24][25][26][27][28][29][30].…”