Annealing hardening in detwinning deformation of Mg–3Al–1Zn alloy

Deformation behavior and mechanical properties of composite twin structures under different loading paths

“…The prestraining conditions and the designations of the pre-strained samples are listed in Table 1 [31,32]. It was found that a long duration annealing at temperatures below 250°C hardly influences this twin structure [21,[31][32][33]. Mechanical properties of the samples under tension and compression along the RD, TD and ND at room temperature were measured on a Shimadzu AG-X machine at a strain rate of 10 À 3 s À 1 .…”

The different effects of solute segregation at twin boundaries on mechanical behaviors of twinning and detwinning

“…It can be seen that twin growth is the predominant mechanism during TDrecompression. As an in-situ EBSD experiment in our previous publication confirmed that detwinning dominated recompression along the ND of pre-strained sample [19], deformation behavior of the pre-twinned samples during ND recompression was not carried out in present study. {¯} and 1013 {¯} TBs of Mg alloys using a High-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) [13].…”

“…{¯} TBs of AZ31 after annealing at 200°C for 6 h [19]. Solute segregation at TBs is related to the annealing temperature, annealing time as well as diffusion coefficients of solutes.…”

Detwinning behavior of Mg–3Al–1Zn alloy at elevated temperatures

“…Recently, Nie et al [20] have reported that periodic segregation of solute atoms at TBs of Mg alloys will appear during annealing treatment. Xin et al [26] further confirm that an annealing at 170 1C for 15 min can induce a full segregation of Al and Zn atoms at TBs of Mg alloy AZ31, leading to annealing hardening in detwinning deformation. In current study, the tension tests at high temperatures (100 1C, 150 1C, 200 1C and 250 1C) generally started after the specimens were kept at testing temperature for 15 min.…”