Browse > Article
http://dx.doi.org/10.5228/KSTP.2010.19.7.416

Effect of {10ī2} Twinning Characteristics on the Deformation Behavior of Rolled AZ31 Mg Alloy  

Park, S.H. (포항공과대학교 신소재공학과)
Hong, S.G. (한국표준과학연구원)
Lee, J.H. (포항공과대학교 신소재공학과)
Lee, C.S. (포항공과대학교 신소재공학과)
Publication Information
Transactions of Materials Processing / v.19, no.7, 2010 , pp. 416-422 More about this Journal
Abstract
The $\{10\bar{1}2\}$ twinning characteristics, such as active twin variants, volume fraction of twins with strain, twin morphology, twin texture and angle relationship between twins, were dependent on the activation mode (i.e., tension parallel to the caxis or compression perpendicular to the c-axis). The selection criterion of active twin variants was governed by the Schmid law. This activation of selected twin variants depending on the activation mode consequently caused a totally different plastic deformation behavior in two activation modes. The differences in the deformation characteristics, such as flow stress and work hardening rate, between both activation modes were explained in relation with activation stresses for slips and twinning, relative activities of twinning and slips during plastic deformation, grain refining effect by twin boundaries (Hall-Petch effect), and twinning-induced change in activities of slips.
Keywords
Magnesium alloy; $\{10\bar{1}2\}$ twinning; Twin variants; Twinning activity;
Citations & Related Records
연도 인용수 순위
  • Reference
1 S. G. Lee, et al., 2005, Variability in the tensile ductility of high-pressure die-cast AM50 Mg-alloy, Scripta Mater., Vol. 53, pp. 851-856.   DOI
2 Wu L, et al., 2008, Twinning-detwinning behavior during the strain-controlled low-cycle fatigue testing of a wrought magnesium alloy, ZK60A, Acta Mater., Vol. 56, pp. 688-695.   DOI
3 S. H. Park, S-G Hong, C. S. Lee, 2010, Effect of anisotropy on the low-cycle fatigue behavior of rolled AZ31 magnesium alloy, Mater. Sci. Eng. A, Vol. 527, pp. 417-423.   DOI
4 S. H. Park, S-G Hong, C. S. Lee, 2010, Role of initial {10-12} twin in the fatigue behavior of rolled Mg-3Al-1Zn alloy, Scripta Mater., Vol. 62, pp. 666-669.   DOI
5 Y. N. Wang, J. C. Huang, 2007, The role of twinning and untwinning in yielding behavior in hot-extruded Mg-Al-Zn alloy, Acta Mater., Vol. 55, pp. 897-905.   DOI
6 Y. Chino, K. Kimura, M. Mabuchi, 2009, Deformation characteristics at room temperature under biaxial tensile stress in textured AZ31 Mg alloy sheets, Acta Mater., Vol. 57, pp. 1476-1485.   DOI
7 M. R. Barnett, Z. Keshavarz, A. G. Beer, D. Atwell, 2004, Influence of grain size on the compression deformation of wrought Mg-3Al-1Zn, Acta Mater., Vol. 52, pp. 5093-5103   DOI
8 Robert E. Reed-Hill, R. Abbaschian, 1991, Physical Metallurgy Principles, PWS publishing company, Boston.
9 S. H. Park, S-G Hong, C. S. Lee, 2010, Activation mode dependent {10-12} twinning characteristics in a polycrystalline magnesium alloy, Scripta Mater., Vol. 62, pp. 202-205.   DOI
10 B. L. Mordike, T. Ebert, 2001, Magnesium: Properties-applications-potential, Mater. Sci. Eng. A, Vol. 302, pp. 37-45.   DOI
11 X.Y. Lou, et al., 2007, Hardening evolution of AZ31B Mg sheet, Int. J. Plast., Vol. 23, pp. 44-86.   DOI
12 H. Mayer, M. Papakyriacou, B. Zettl, S. E. Stanzl-Tschegg, 2003, Influence of porosity on the fatigue limit of die cast magnesium and aluminum alloys, Int. J. Fatigue, Vol. 25, pp. 245-256.   DOI
13 J.P. Weiler, et al., 2005, Relationship between internal porosity and fractures strength of die-cast magnesium AM60B alloy, Mater. Sci. Eng. A, Vol. 395, pp. 315-322.   DOI