[HTML][HTML] Mild-to-wild plastic transition is governed by athermal screw dislocation slip in bcc Nb

Q Rizzardi, C McElfresh, G Sparks, DD Stauffer… - Nature …, 2022 - nature.com
Plastic deformation in crystals is mediated by the motion of line defects known as
dislocations. For decades, dislocation activity has been treated as a homogeneous, smooth …

[HTML][HTML] Recent Progress in Phase Stability and Elastic Anomalies of Group VB Transition Metals

Y Wang, H Wu, Y Liu, H Wang, X Chen, H Geng - Crystals, 2022 - mdpi.com
Recently discovered phase transition and elastic anomaly of compression-induced softening
and heating-induced hardening (CISHIH) in group VB transition metals at high-pressure and …

Transformation-induced plasticity in omega titanium

AH Zahiri, J Ombogo, T Ma, P Chakraborty… - Journal of Applied …, 2021 - pubs.aip.org
ω-titanium (Ti) is a high-pressure phase that is conventionally perceived to be brittle and
nondeformable, although direct investigations of its deformation process remain scarce. In …

A phase-field approach to athermal β→ ω transformation

B Tang, YW Cui, H Chang, H Kou, J Li… - Computational materials …, 2012 - Elsevier
A quantitative phase-field model has been developed to simulate the microstructural
evolution during the athermal β→ ω transformation in the Zr–Nb alloys by incorporating to a …

Deformation paths and atomistic mechanism of B4→ B1 phase transformation in aluminium nitride

RF Zhang, S Veprek - Acta materialia, 2009 - Elsevier
Two homogeneous deformation paths under uniaxial tension and shear are modeled for the
wurtzite (B4) to rocksalt (B1) phase transformation of AlN by ab initio density functional …

[HTML][HTML] Deciphering the microstructural evolution and adiabatic shearing behavior of the titanium alloy with stress-induced ω phase transformation during dynamic …

K Chen, Q Fan, L Yang, J Yao, S Xu, W Lei, Y Gao - Materials & Design, 2022 - Elsevier
Metastable β titanium alloys are attracting great interest due to their intricate plastic
deformation mechanisms. In this work, a novel metastable β titanium alloy Ti-6Mo-3.5 Cr-1Zr …

Martensitic fcc-hcp transformation pathway in solid krypton and xenon and its effect on their equations of state

AD Rosa, A Dewaele, G Garbarino, V Svitlyk, G Morard… - Physical Review B, 2022 - APS
The martensitic transformation is a fundamental physical phenomenon at the origin of
important industrial applications. However, the underlying microscopic mechanism, which is …

Equation of state and phase evolution of U-7.7 Nb with implications for the understanding of dynamic behavior of U-Nb alloys

J Zhang, RE Hackenberg, SC Vogel… - Applied Physics …, 2019 - pubs.aip.org
In this work, we conducted in-situ high PT neutron diffraction experiments on U-7.7 Nb. Our
results show that the tetragonal γ o phase is substantially more compressible than the …

[HTML][HTML] Allotropy in ultra high strength materials

ASLS Pattamatta, DJ Srolovitz - Nature Communications, 2022 - nature.com
Allotropic phase transformations may be driven by the application of stresses in many
materials; this has been especially well-documented for pressure driven transformations …

Shear and shuffling accomplishing polymorphic fcc γ→ hcp ε→ bct α martensitic phase transformation

XS Yang, S Sun, HH Ruan, SQ Shi, TY Zhang - Acta Materialia, 2017 - Elsevier
Martensitic transformation (MT) has extreme science merits and engineering significance.
However, the underlying displacive atom collective movements for the transition from face …