Paper Title:
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.

  Info
Periodical
Materials Science Forum (Volumes 667-669)
Edited by
Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon
Pages
839-844
DOI
10.4028/www.scientific.net/MSF.667-669.839
Citation
H. J. Yang, X.H. Shao, S.X. Li, S. D. Wu, Z.F. Zhang, "Enhancing Strength and Maintaining Ductility of Mg-3%Li-1%Sc Alloy by Equal Channel Angular Pressing", Materials Science Forum, Vols. 667-669, pp. 839-844, 2011
Online since
December 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Vera G. Sursaeva
Abstract:When a bicrystal or polycrystal are subjected to a change in temperature, the individual responses of the two adjoining crystals may differ...
801
Authors: Martin Petrenec, Veronique Aubin, Jaroslav Polák, Suzanne Degallaix
Abstract:Austenitic-ferritic duplex stainless steel has been subjected to uniaxial and biaxial nonproportional cyclic loading with the same equivalent...
179
Authors: Rimma Lapovok
Abstract:Equal Channel Angular Extrusion (ECAE) has become a very popular tool for studying the evolution of microstructure and properties under...
37
Authors: Qiang Shen, Chang Lian Chen, Fei Chen, Qi Wen Liu, Lian Meng Zhang
Abstract:Porous calcia stabilized zirconia ceramics (CSZC) with closed pores were presurelessly sintered by adding different contents of zirconia...
435
Authors: Wojciech Wajda, Henryk Paul
Abstract:The paper describes the mechanism of deformation at 77 K of pure aluminum bicrystals of different grain orientations. The following...
108