title: High Pressure Phase-Transformation Induced Texture Evolution and Strengthening in Zirconium Metal: Experiment and Modeling.
abstract: We studied the phase-transition induced texture changes and strengthening mechanism for zirconium metal under quasi-hydrostatic compression and uni-axial deformation under confined high pressure using the deformation-DIA (D-DIA) apparatus. It is shown that the experimentally obtained texture for ω-phase Zr can be qualitatively described by combining a subset of orientation variants previously proposed in two different models. The determined flow stress for the high-pressure ω-phase is 0.5-1.2 GPa, more than three times higher than that of the α-phase. Using first-principles calculations, we investigated the mechanical and electronic properties of the two Zr polymorphs. We find that the observed strengthening can be attributed to the relatively strong directional bonding in the ω phase, which significantly increases its shear plastic resistance over the α-phase Zr. The present findings provide an alternate route for Zr metal strengthening by high-pressure phase transformation.
authors.affiliation: 1] Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China [2] Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Yu
authors.affiliation: School of Materials Science and Engineering, Beihang University, Beijing 100191, China.
authors.forename: Ruifeng
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
authors.forename: David
authors.initials: D
authors.lastname: Weldon
authors.affiliation: Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
authors.forename: Sven C
authors.initials: SC
authors.lastname: Vogel
authors.affiliation: Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
authors.forename: Jianzhong
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
authors.forename: Donald W
authors.initials: DW
authors.lastname: Brown
authors.affiliation: Center for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois, 60469, USA.
authors.forename: Yanbin
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
authors.forename: Helmut M
authors.initials: HM
authors.lastname: Reiche
authors.affiliation: HiPSEC and Department of Physics and Astronomy, University of Nevada, Las Vegas, Nevada, USA.
authors.forename: Shanmin
authors.initials: S
authors.lastname: Wang
authors.affiliation: Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China.
authors.forename: Shiyu
authors.initials: S
authors.lastname: Du
authors.affiliation: 1] Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China [2] Collaborative Innovation Center of Quantum Matter, Beijing, China.
authors.forename: Changqing
authors.initials: C
authors.lastname: Jin
authors.affiliation: 1] Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China [2] HiPSEC and Department of Physics and Astronomy, University of Nevada, Las Vegas, Nevada, USA.
authors.forename: Yusheng
authors.initials: Y
authors.lastname: Zhao