Twinning-induced plasticity with multiple twinning modes and disclinations in Mg alloys

Gao, Yipeng; Zhao, Lei; Zha, Min; Du, Chunfeng; Hua, Zhen-Ming; Guan, Kai; Wang, Huiyuan

doi:10.1016/j.ijplas.2023.103595

Cited by 26 publications

(1 citation statement)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the values of εyy are negative. The absolute value of εyy is significantly larger than zero, which suggests that it can coordinate the strain along the compression axis [38]. In addition, the values of εxx are positive when there is an extension strain component along the x-direction.…”

Section: Twin Chains In Different Regionsmentioning

confidence: 98%

A Study of {10-12} Twinning Activity Associated with Stress State in Mg-3Al-1Zn Alloy during Compression

Lu,

Wang,

Yao

et al. 2024

Metals

View full text Add to dashboard Cite

An eight-sided prism sample, obtained from a hot-rolled AZ31 magnesium alloy sheet, was compressed at room temperature along the transverse direction to investigate the influence of local strain on twinning behavior using electron backscatter diffraction (EBSD) measurements, hardness distribution, and metallographic observations. The octagonal surface of the sample was divided into distinct regions based on hardness distribution and metallographic observations. Combined analysis of the Schmid factor (SF) and the strain compatibility factor (m’) was employed to study twin variant selection. Basal on SF ratio distribution, the Schmid factor criterion, can predict over 75% of observed twin variants in regions A and D (normal stress samples). In contrast, 64% of twin variant selection behavior in region C (shear stress sample) can be effectively explained using a pure shear model. Twin variants with high strain compatibility factors may prefer activation to reduce stress concentration. The strain compatibility factor is more appropriate than the Schmid factor for analyzing the effect of local strain on the selection behavior of twin variants.

show abstract

Section: Twin Chains In Different Regionsmentioning

confidence: 98%