Effect of strain rate on mechanical behaviour of commercial die-cast magnesium alloys

Hua Qian Ang, Trevor B. Abbott, Suming Zhu, Mark A. Easton

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

Abstract

The tensile properties of high-pressure die-cast Mg-6Al-0.3Mn (AM60), Mg-9Al-1Zn (AZ91), and Mg-4Al-4RE (AE44), under strain rates ranging from 10-6 to 10-1 s-1 have been investigated. It was found that AE44 is highly strain rate sensitive, followed by AM60, whilst AZ91 has little strain-rate sensitivity, fitting with previous observations about a correlation between strain-rate sensitivity and the aluminium content. Ductility is improved at lower strain rates in AE44 and AM60, but it appears to be independent of strain rate in AZ91. The difference in strain-rate sensitivity among these alloys is considered to be related to dynamic strain aging (DSA) from interactions between the aluminium solute and dislocations.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2017, MS and T 2017
PublisherAssociation for Iron and Steel Technology
Pages164-170
Number of pages7
ISBN (Electronic)9781510850583
DOIs
Publication statusPublished - 1 Jan 2017
Externally publishedYes
EventMaterials Science and Technology Conference 2017 - Pittsburgh, United States of America
Duration: 8 Oct 201712 Oct 2017

Publication series

NameMaterials Science and Technology Conference and Exhibition 2017, MS and T 2017
Volume1

Conference

ConferenceMaterials Science and Technology Conference 2017
Abbreviated titleMS&T 2017
CountryUnited States of America
CityPittsburgh
Period8/10/1712/10/17

Keywords

  • Dynamic strain aging
  • High-pressure die-casting
  • Magnesium alloys
  • Strain-rate sensitivity

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