Transfer or blockage: Unraveling the interaction between deformation twinning and grain boundary in tantalum under shock loading with molecular dynamics

Meng，Z. C.1,2,3; Yang，M. M.1; Feng，A. H.4; Qu，S. J.4; Zhao，F.5; Yang，L.6,7; Yao，J. H.6,7; Yang，Y.1; Fan，Q. B.6,7; Wang，H.1

2023-09-01

10.1016/j.jmst.2023.01.039

Journal of Materials Science and Technology   Impact Factor & Quartile

1005-0302

The interaction between {112}<111> deformation twinning and grain boundary in coaxial polycrystalline tantalum under shock compression was studied with molecular dynamics simulation under different grain pair misorientation angles (MA) and geometric compatibility factor (m’). Generally, in the coaxial polycrystal, the value of MA determines the occurrence of twin transfer (TT) or twin blockage (TB), i.e., twin transfer occurs at MA ≤ 29° with twin blockage otherwise. Under TT, the value of m’ affects the selection of twin variants., i.e., the twin system with a larger m’ is easier to active. The morphology of twin pairs is ruler-shaped and lenticular under TT and TB, respectively, with different thickening mechanisms, including grain boundary dislocation emission.

Atomistic simulation Grain boundary Plasticity Tantalum Twin

English

Others

MATERIALS SCIENCE

2-s2.0-85151254370

Scopus

1.Interdisciplinary Centre for Additive Manufacturing (ICAM),School of Materials and Chemistry,University of Shanghai for Science and Technology,Shanghai,200093,China
2.Institute of Metal Research,Chinese Academy of Sciences,Shenyang,110016,China
3.School of Materials Science and Engineering,University of Science and Technology of China,Shenyang,110016,China
4.School of Materials Science and Engineering,Tongji University,Shanghai,201804,China
5.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
6.National Key Laboratory of Science and Technology on Materials Under Shock and Impact,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing,100081,China
7.Beijing Institute of Technology Chongqing Innovation Center,Chongqing,401135,China

Meng，Z. C.,Yang，M. M.,Feng，A. H.,et al. Transfer or blockage: Unraveling the interaction between deformation twinning and grain boundary in tantalum under shock loading with molecular dynamics[J]. Journal of Materials Science and Technology,2023,156:118-128.

Meng，Z. C..,Yang，M. M..,Feng，A. H..,Qu，S. J..,Zhao，F..,...&Wang，H..(2023).Transfer or blockage: Unraveling the interaction between deformation twinning and grain boundary in tantalum under shock loading with molecular dynamics.Journal of Materials Science and Technology,156,118-128.

Meng，Z. C.,et al."Transfer or blockage: Unraveling the interaction between deformation twinning and grain boundary in tantalum under shock loading with molecular dynamics".Journal of Materials Science and Technology 156(2023):118-128.