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Quantitative investigation on the deformation modes and cracking behavior during cyclic torsional loading of extruded pure Mg and Mg-3Y alloy
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  • Jiang Zheng,
  • Liuyong He,
  • Guilan Wen,
  • Rong Shi,
  • Lihong Xia,
  • Tianjiao Li,
  • Bin Jiang
Jiang Zheng
Chongqing University Joint International Research Laboratory for Light Alloys

Corresponding Author:jzheng@cqu.edu.cn

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Liuyong He
Chongqing University Joint International Research Laboratory for Light Alloys
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Guilan Wen
Chongqing University Joint International Research Laboratory for Light Alloys
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Rong Shi
Chongqing University Joint International Research Laboratory for Light Alloys
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Lihong Xia
Chongqing Technology and Business University
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Tianjiao Li
Chongqing University Joint International Research Laboratory for Light Alloys
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Bin Jiang
National Engineering Research Center for Magnesium Alloys
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Abstract

This study explores the effect of adding 3wt.% Y to pure magnesium (Mg) on its mechanical behavior under cyclic torsional loadings at room temperature. The research examines deformation and cracking modes in both pure Mg and Mg-3Y samples. Deformation modes are monitored using quasi-in-situ EBSD observations coupled with slip trace analysis. The findings reveal that basal slip dominates the cyclic deformation throughout the fatigue life of the pure Mg sample, while both basal and pyramidal slip dominate the cyclic deformation in the Mg-3Y sample. Intergranular cracking is the primary cracking mode for both samples under cyclic torsional loadings. Basal and pyramidal slip PSB cracking serves as a primary transgranular cracking mode in the pure Mg and Mg-3Y samples, respectively. The study also investigates the underlying mechanism governing the activity of various deformation modes, cracking modes, and mechanical behavior.
25 Apr 2023Submitted to Fatigue & Fracture of Engineering Materials & Structures
06 May 2023Submission Checks Completed
06 May 2023Assigned to Editor
11 May 2023Reviewer(s) Assigned
25 Aug 2023Review(s) Completed, Editorial Evaluation Pending
26 Aug 2023Editorial Decision: Revise Minor
17 Sep 20231st Revision Received
18 Sep 2023Submission Checks Completed
18 Sep 2023Assigned to Editor
19 Sep 2023Reviewer(s) Assigned
15 Oct 2023Review(s) Completed, Editorial Evaluation Pending
16 Oct 2023Editorial Decision: Accept