Large plasticity in magnesium mediated by pyramidal dislocations

BY Liu, F Liu, N Yang, XB Zhai, L Zhang, Y Yang, B Li… - Science, 2019 - science.org
Lightweight magnesium alloys are attractive as structural materials for improving energy
efficiency in applications such as weight reduction of transportation vehicles. One major …

Mechanistic origin and prediction of enhanced ductility in magnesium alloys

Z Wu, R Ahmad, B Yin, S Sandlöbes, WA Curtin - Science, 2018 - science.org
Pure magnesium exhibits poor ductility owing to pyramidal〈 c+ a〉 dislocation
transformations to immobile structures, making this lowest-density structural metal unusable …

The origins of high hardening and low ductility in magnesium

Z Wu, WA Curtin - Nature, 2015 - nature.com
Magnesium is a lightweight structural metal but it exhibits low ductility—connected with
unusual, mechanistically unexplained, dislocation and plasticity phenomena—which makes …

[HTML][HTML] Rejuvenation of plasticity via deformation graining in magnesium

BY Liu, Z Zhang, F Liu, N Yang, B Li, P Chen… - Nature …, 2022 - nature.com
Magnesium, the lightest structural metal, usually exhibits limited ambient plasticity when
compressed along its crystallographic c-axis (the “hard” orientation of magnesium). Here we …

Origins and dissociation of pyramidal< c+ a> dislocations in magnesium and its alloys

Z Ding, W Liu, H Sun, S Li, D Zhang, Y Zhao… - Acta Materialia, 2018 - Elsevier
Alloying magnesium (Mg) with rare earth elements such as yttrium (Y) has been reported to
activate the pyramidal< c+ a> slip systems and improve the plasticity of Mg at room …

Temperature effects on the mobility of pyramidal< c+ a> dislocations in magnesium

H Fan, Q Wang, X Tian, JA El-Awady - Scripta Materialia, 2017 - Elsevier
Temperature effects on the mobility of< c+ a> dislocations on pyramidal planes are
characterized by molecular dynamics simulations. On the first-order pyramidal planes, near …

[HTML][HTML] Strength and ductility with {10͞11} — {10͞12} double twinning in a magnesium alloy

M Lentz, M Risse, N Schaefer, W Reimers… - Nature …, 2016 - nature.com
Based on their high specific strength and stiffness, magnesium alloys are attractive for
lightweight applications in aerospace and transportation, where weight saving is crucial for …

Deformation mechanisms of magnesium alloys

SR Agnew - Advances in wrought magnesium alloys, 2012 - Elsevier
This chapter discusses the deformation mechanisms responsible for the complex
mechanical behaviors exhibited by Mg and its alloys. The use of new experimental (eg …

Towards resolving the anonymity of pyramidal slip in magnesium

H Fan, JA El-Awady - Materials Science and Engineering: A, 2015 - Elsevier
Plasticity in magnesium crystals oriented for c-axis compression has been usually attributed
to< c+a> dislocation slip on second-order pyramidal {11 2¯ 2} planes. Through molecular …

Mechanisms for enhanced plasticity in magnesium alloys

SQ Zhu, HG Yan, XZ Liao, SJ Moody, G Sha, YZ Wu… - Acta Materialia, 2015 - Elsevier
We have recently reported that a high strain-rate rolling process is effective for producing
strong and ductile Mg alloy sheets. Here we elucidate the fundamental mechanisms that are …