Deformation behavior upon two-step loading in a magnesium alloy sheet

TLDR: In this paper, two-step loading tests were performed on an AZ31 rolled magnesium alloy sheet with strong basal texture in the normal direction, and the deformation behavior such as a stress-strain curve, Lankford value, and texture evolution was investigated both experimentally and numerically.

About: This article is published in International Journal of Plasticity.The article was published on 2016-07-01 and is currently open access. It has received 41 citations till now. The article focuses on the topics: Deformation (meteorology) & Deformation mechanism.

Figures

Fig. 16 Simulation results of volume fractions of twins measured before and after the second loading in the 6% prestrained sheet.

Fig. 9 Evolution of work-hardening rate during the second loading. The results of the –3% prestrained sheet with (a) θ = 0, 30 and 45° and (b) θ = 60 and 90°, and the results of the –6% prestrained sheet with (c) θ = 0, 30 and 45° and (d) θ = 60 and 90°. Symbols and solid lines are the experimental and simulation results, respectively.

Fig. 14 Evolutions of relative activity in matrix region during monotonic tension in the virgin sheet at θ of (a) 0, (b) 30, (c) 45, (d) 60, and (e) 90°.

Fig. 17 Evolutions of relative activity during the first loading in the –6% prestrained sheet.

Table 1 Mechanical properties of the rolled Mg alloy sheet obtained under tension *

Fig. 7 Results of parameter identification. (a) Stress–strain curves obtained under tension and compression, (b) those under compression–tension, and (c) evolution of Lankford value under tension in the RD.

Frequently asked questions

Q1. What are the contributions mentioned in the paper "Deformation behavior upon two- step loading in a magnesium alloy sheet" ?

Two-step loading tests were performed on an AZ31 rolled magnesium alloy sheet with strong basal texture in the normal direction, and the deformation behavior such as a stress–strain curve, Lankford value, and texture evolution was investigated both experimentally and numerically. When the sheet was subjected to compression in the rolling direction followed by tension in different directions, the following characteristic deformation was observed during the second loading: