Twinning behavior in AZ31-B polycrystal texture subjected to in-situ bending test

Itsuya Sato, Seiji Miura, Tetsuo Mohri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A commercial Mg alloy, AZ31B, has been used widely. In the texture of AZ31B sheet, each grain has its c-axis almost parallel to the sheet normal. Therefore, at the bending process of the sheet, basal slip system can not accommodate an in-plane plastic strain which is perpendicular to the c-axis of each grain. It is known that {101̄2} twin can be formed by applying an extension strain parallel to the c-axis, which is equivalent to the a-axis compression strain. So in the bending deformation of the AZ31B sheet with a texture microstructure, it is expected that {101̄2} twinning occurs. In this study, an in-situ bending test of AZ31B sheet with a texture was conducted under a confocal scanning laser microscope to observe twinning by applying compression stress along a direction almost perpendicular to the c-axis of grains. In addition, EBSD techniques were used for the analysis of crystal orientations. The process of twin development observed by the in-situ bending test can be summarized as follows; with the increase of the deformation strain, the total area of twins increases. However, it is noted that the growth of twins is apparent while the number of twins is almost constant during plastic bending deformmation. EBSD analysis suggested that twinning behavior obey Schmid's law even in the polycrystal.

Original languageEnglish
Title of host publicationPRICM7
PublisherTrans Tech Publications Ltd
Pages715-718
Number of pages4
ISBN (Print)0878492550, 9780878492558
DOIs
Publication statusPublished - 2010 Jan 1
Event7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7 - Cairns, QLD, Australia
Duration: 2010 Aug 22010 Aug 6

Publication series

NameMaterials Science Forum
Volume654-656
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
CountryAustralia
CityCairns, QLD
Period10/8/210/8/6

Keywords

  • EBSD analysis
  • Grain boundary
  • Schmid's law

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Sato, I., Miura, S., & Mohri, T. (2010). Twinning behavior in AZ31-B polycrystal texture subjected to in-situ bending test. In PRICM7 (pp. 715-718). (Materials Science Forum; Vol. 654-656). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.654-656.715