Mechanism of strain hardening of magnesium single-crystals: Discrete dislocation dynamics simulations

M Li, X Tian, W Jiang, Q Wang, H Fan - … of the Mechanics and Physics of …, 2023 - Elsevier
Poor ductility heavily limits the industrial application of magnesium (Mg) alloys, and
pyramidal dislocations are an important deformation mode for ductility enhancement. In this …

Deformation of magnesium during c-axis compression at low temperatures

K Srivastava, JA El-Awady - Acta Materialia, 2017 - Elsevier
In this study, large scale atomistically informed three-dimensional (3D) discrete dislocation
dynamics (DDD) simulations were conducted to investigate the mechanical response of …

Dissociation of edge and screw pyramidal I and II dislocations in magnesium

Y Yang, F Liu, K Chen, B Liu, Z Shan, B Li - Journal of Magnesium and …, 2023 - Elsevier
Pyramidal dislocations in magnesium (Mg) and other hexagonal close-packed metals play
an important role in accommodating plastic strains along the c-axis. Bulk single crystal Mg …

Experimental observations of the mechanisms associated with the high hardening and low strain to failure of magnesium

KY Xie, KM Reddy, L Ma, A Caffee, M Chen… - Materialia, 2019 - Elsevier
Magnesium holds considerable promise as a lightweight structural material, but structural
applications of Mg alloys are generally limited to cast components because of its limited …

Modeling the mechanical response and microstructure evolution of magnesium single crystals under c-axis compression

MA Shehadeh, NK Shatarat, W Jaber - Computational Materials Science, 2017 - Elsevier
Atomistically informed multiscale dislocation dynamics plasticity (MDDP) framework is used
to investigate the mechanical response and microstructure evolution in bulk magnesium …

Temperature Effect on the Deformation Behavior in Nanocrystalline Magnesium under Compression: An Atomistic Study

C Zhang, C Xu, Y Li, B Wang, Y Guo - Crystals, 2023 - mdpi.com
The classic molecular dynamics (MD) simulation approach has been used to investigate the
microstructure change in polycrystalline magnesium (Mg) during compressive deformation …

Anomalous hardening in magnesium driven by a size-dependent transition in deformation modes

GD Sim, G Kim, S Lavenstein, MH Hamza, H Fan… - Acta Materialia, 2018 - Elsevier
Here, we report a comprehensive study that combines in situ scanning electron microscopy
experiments and atomistic simulations to quantify the effect of crystal size on the …

Microstructural evolution of single-crystal magnesium under elevated temperature and ultra-high strain rate

S Wang, H Pan, P Wang, F Zhang - Journal of Applied Physics, 2019 - pubs.aip.org
Despite numerous studies of the deformation behavior of magnesium (Mg), its
microstructural evolution at different temperatures and strain rates remains largely …

Grain-boundary activated pyramidal dislocations in nano-textured Mg by molecular dynamics simulation

DH Kim, F Ebrahimi, MV Manuel, JS Tulenko… - Materials Science and …, 2011 - Elsevier
The generation and structures of first-and second-order pyramidal< c+ a> dislocations, 1/3
{1 0 1¯ 1}< 1¯ 1¯ 2 3> and 1/3 {1 1 2¯ 2}< 1¯ 1¯ 2 3>, are determined in pure magnesium …

Formation and slip of pyramidal dislocations in hexagonal close-packed magnesium single crystals

Y Tang, JA El-Awady - Acta Materialia, 2014 - Elsevier
Slip of pyramidal< c+ a> dislocations in hexagonal close-packed (hcp) crystals is a requisite
for accommodation of homogeneous c-axis deformation. However, fundamental aspects of …