Tensile mechanical properties and the ductile-to-brittle transition behavior of Mg-Li-Ai-Zn alloy

Chung Wei Yang, Truan-Sheng Lui, Li Hui Chen

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

1 Citation (Scopus)

Abstract

The present study focuses on investigating the tensile mechanical properties and failure behaviours of the LAZ1021 Mg-Li alloy. The tensile tests of LAZ1021 specimens were performed at-25°C to 250°C, with a tensile strain rate of 1.67 × l0-3/s. The XRD analysis results suggested that the microstructural characteristics of LAZ1021 were combined with the Mg-rich α-phase and the Li-rich P-phase, and there was less phase composition change after tensile tests at various testing temperatures. The tensile strength and elongations were sensitive to the deformation temperatures. The total elongation was significantly increased from 4% at-25°C to about 55% above 100°C tensile testing temperatures. A significant ductile-to-brittle transition temperature (DBTT) was recognized at about 50°C. The failures, which occurred from brittle fracture with evident cleavage to ductile dimpled ruptures, is related to the transition of slip systems with increasing temperatures and the cavitation between α/β-phase interface.

Original languageEnglish
Title of host publicationMagnesium Technology 2010 - Held During TMS 2010 Annual Meeting and Exhibition
Pages455-459
Number of pages5
Publication statusPublished - 2010 May 21
EventMagnesium Technology 2010 - TMS 2010 Annual Meeting and Exhibition - Seattle, WA, United States
Duration: 2010 Feb 142010 Feb 18

Publication series

NameMagnesium Technology
ISSN (Print)1545-4150

Other

OtherMagnesium Technology 2010 - TMS 2010 Annual Meeting and Exhibition
CountryUnited States
CitySeattle, WA
Period10-02-1410-02-18

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Yang, C. W., Lui, T-S., & Chen, L. H. (2010). Tensile mechanical properties and the ductile-to-brittle transition behavior of Mg-Li-Ai-Zn alloy. In Magnesium Technology 2010 - Held During TMS 2010 Annual Meeting and Exhibition (pp. 455-459). (Magnesium Technology).