On the roles of stress-triaxiality and strain-rate on the deformation behavior of AZ31 magnesium alloys

C. Kale; M. Rajagopalan; S. Turnage; B. Hornbuckle; K. Darling; S. N. Mathaudhu; K. N. Solanki

doi:10.1080/21663831.2017.1417923

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On the roles of stress-triaxiality and strain-rate on the deformation behavior of AZ31 magnesium alloys

Original Report | 更新时间：2026-08-19

- On the roles of stress-triaxiality and strain-rate on the deformation behavior of AZ31 magnesium alloys
- Materials Research Letters Vol. 6, Issue 2, Pages: 152-158(2018)
- 作者机构：
  
  1. School for the Engineering of Matter Transport and Energy Arizona State University Tempe
  2. .S. Army Research Laboratory APG Adelphi,U
  3. Mechanical Engineering Department University of California – Riverside Riverside
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2017.1417923
  CLC：
- Online First：27 December 2017，
  
  Published：2018
- 稿件说明：
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C. Kale, M. Rajagopalan, S. Turnage, et al. On the roles of stress-triaxiality and strain-rate on the deformation behavior of AZ31 magnesium alloys[J]. Materials Research Letters, 2018, 6(2): 152-158.
DOI：

C. Kale, M. Rajagopalan, S. Turnage, et al. On the roles of stress-triaxiality and strain-rate on the deformation behavior of AZ31 magnesium alloys[J]. Materials Research Letters, 2018, 6(2): 152-158. DOI： 10.1080/21663831.2017.1417923.

摘要

Abstract

BSTRACTThe presence of complex states-of-stress and strain-rates directly influence the dominant deformation mechanisms operating in a given material under load. Mg alloys have shown limited ambient temperature formability due to the paucity of active slip-mechanisms

however

studies have focused on quasi-static strain-rates and/or simple loading conditions (primarily uniaxial or biaxial). For the first time

the influence of strain-rate and stress-triaxiality is utilized to unravel the active deformation mechanisms operating along the rolling

transverse- and normal-directions in wrought AZ31-alloy. It is discovered that the activation of various twin-mechanisms in the presence of multiaxial loading is governed by the energetics of the applied strain-rates.

IMPACT STATEMENT

It is shown for the first time that the higher deformation energy associated with dynamic strain-rates

coupled with high-triaxiality

promotes detwinning and texture evolution in HCP alloys with high c/a ratio.

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