Open AccessEffect of ECAP Deformation on Microstructure and Properties of Pure Magnesium
Author(s) -
Tipeng Qin,
Chunyan Ban,
Xiaoze Hou
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/571/1/012120
Subject(s) - extrusion , materials science , ultimate tensile strength , microstructure , elongation , magnesium alloy , dynamic recrystallization , metallurgy , grain size , equal channel angular extrusion , composite material , severe plastic deformation , pressing , deformation (meteorology) , hot working
In this paper, the effect of the deformation of equal-channel angular pressing (ECAP) on the microstructure and the mechanical properties at room temperature was studied under the extrusion temperature of 350°C and extrusion path of BC. The results show that the grain size of pure magnesium is obviously refined with the increase of the number of extrusion passes. The yield strength, tensile strength and elongation of the as-cast sample are 20MPa, 55MPa and 14.7% respectively. The yield strength and tensile strength of the 3-pass extrusion sample can be increased by 350% and 170%, respectively. The tensile strength and yield strength of the 4-pass extrusion sample are reduced compared with the 3-pass extrusion sample, but the elongation is further increased. The grain refinement of alloy ECAP process is mainly a combination of mechanical shear and dynamic recrystallization.