Open AccessA Study on Microstructure and Mechanical Properties of AZ31 Magnesium Alloy after Constrained Groove Pressing
Author(s) -
Pham Thi Thuy,
Dang Thi Hong Hue,
Dao Minh Ngung,
Quang Duc Pham
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/611/1/012005
Subject(s) - microstructure , materials science , magnesium alloy , ultimate tensile strength , grain size , metallurgy , scanning electron microscope , magnesium , alloy , tensile testing , elongation , pressing , groove (engineering) , composite material
This study the AZ31 magnesium alloy trips of the dimension 60×60×3 mm was used for constrained groove pressing (CGP) after 4 cycles under elevated temperature condition. Microstructure and mechanical properties were analyzed for a material with ultra-fine grained structure prepared by CGP of AZ31 magnesium alloy. Analysis of the scanning electron microscope (SEM) micrographs observations showed significant drop of the grain size from (50 ÷ 60) μm to (4 ÷ 6) μm after four CGP cycles. The minimal grain size of (H1.5) μm was detected in the regions of the highest deformation. Moreover, the tensile test along the x and z directions showed excellent high strength (325 MPa) and also plastic elongation of 35 %. It is shown that the CGP technique is a good tool for the grain refinement and improving mechanical properties of magnesium alloys.