Synchrotron X-ray diffraction analysis of bending strains in magnesium alloy AZ31B processed by severe plastic deformation

Hongjia Zhang, Kai Soon Fong, Xu Song, Siqi Ying, Enrico Salvati, Tan Sui, Alexander M. Korsunsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

Magnesium alloys are becoming increasingly popular in industrial applications due to their low density and high specific strength. The improvements sought in the formability at ambient temperature and fracture resistance of magnesium alloy AZ31B can be attained through the use of Severe Plastic Deformation (SPD). In order to investigate the deformation response of this material, in situ three-point bending test was performed on a sample extracted from a plate subjected to SPD by constrained groove pressing (CGP). High-energy synchrotron X-ray diffraction was used to examine the lattice strains across the sample. It revealed that significant tension-compression asymmetry is observed for some grain groups. Twinning deformation mode is observed under compressive loading differs from other modes. Additionally, it has been shown that plastic deformation proceeds more readily within grains which experience loading parallel to the basal plane. This is in contrast to the grains whose c-axis is aligned with the loading direction. Stress-strain curves were obtained from XRD and they agree well with results from mechanical test.

Original languageEnglish
Title of host publicationIMECS 2016 - International Multiconference of Engineers and Computer Scientists 2016
EditorsDavid Dagan Feng, Alexander M. Korsunsky, S. I. Ao, Craig Douglas, Oscar Castillo
PublisherNewswood Limited
Pages685-690
Number of pages6
ISBN (Electronic)9789881404763
Publication statusPublished - 2016
Externally publishedYes
EventInternational Multiconference of Engineers and Computer Scientists 2016, IMECS 2016 - Tsimshatsui, Kowloon, Hong Kong
Duration: 16 Mar 201618 Mar 2016

Publication series

NameLecture Notes in Engineering and Computer Science
Volume2
ISSN (Print)2078-0958

Conference

ConferenceInternational Multiconference of Engineers and Computer Scientists 2016, IMECS 2016
Country/TerritoryHong Kong
CityTsimshatsui, Kowloon
Period16/03/1618/03/16

Keywords

  • Crystal lattice strain
  • Groove pressing
  • Magnesium alloy AZ3IB
  • Severe plastic deformation
  • Synchrotron X-ray diffraction

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