Enhancing Strength and Maintaining Ductility of Mg-3%Li-1%Sc Alloy by Equal Channel Angular Pressing

Hua Jie Yang; Xiao Hong Shao; S.X. Li; Shi Ding Wu; Zhe Feng Zhang

doi:10.4028/www.scientific.net/MSF.667-669.839

Paper Titles

Mechanical Properties of an Al-5.4%Mg-0.5%Mn-0.1%Zr Alloy Subjected to ECAP and Rolling
p.815

Microstructure Stability and Creep Behaviour of a Cu-0.2wt.%Zr Alloy Processed by Equal-Channel Angular Pressing
p.821

Temperature Effects on the Mechanical Behavior of Ultrafine-Grained Material
p.827

Static and Cyclic Deformation of Commercially Pure Al Processed by Equal-Channel Angular Pressing Using Two Routes
p.833

Enhancing Strength and Maintaining Ductility of Mg-3%Li-1%Sc Alloy by Equal Channel Angular Pressing
p.839

Comparison of High-Temperature Compressive Deformation Characteristics of Differently Processed LY12 Aluminum Alloys
p.845

Distribution of Mechanical Properties by Volume in Titanium Billets Processed by Twist Extrusion
p.851

Mechanical Spectroscopy of Ultrafine Grained Copper
p.857

Ultrafine-Grained Steel Produced by Warm Rolling and Annealing of Lath Martensite
p.863

HomeMaterials Science ForumMaterials Science Forum Vols. 667-669Enhancing Strength and Maintaining Ductility of...

Enhancing Strength and Maintaining Ductility of Mg-3%Li-1%Sc Alloy by Equal Channel Angular Pressing

Abstract:

Equal channel angular pressing (ECAP) has been conducted on as-cast Mg-3%Li-1%Sc alloy for four-passes to study the microstructure uniformity and tensile properties. After ECAP, the microstructure become muddled, contains about 65% of deformed coarse grains with abundant low angle grain boundaries and about 35% of recrystallized small grains. Meanwhile, a strong basal texture is formed in the ECAP sample. The texture type of the recrystallized grains and the deformed grains are the same, however, the texture strength of the recrystallized grains is much lower than the deformed ones. Tensile strength is improved effectively and the elongation is maintained after ECAP. The increment of strength results from the microstructure refinement and residual dislocations produced by ECAP, while the recovery of ductility may be attributed to a shear type texture formed in the alloy during ECAP.