Results 11 to 20 of about 4,246,041 (202)

Fatigue-Induced HCP-to-FCC Phase Transformation Resulting in Two FCC-Zr Variants in Pure Zirconium. [PDF]

Materials (Basel), 2023
This study utilized transmission electron microscopy (TEM) and on-axis transmission Kikuchi diffraction (TKD) to investigate the fatigue-induced HCP-to-FCC phase transformation in industrial pure zirconium under a stress ratio of R = 0.1. The results show that fatigue damages result from phase deformations during cyclic loadings.
Jiang Q, Chen Y, Shuai Q, Liu F, Li L, He C, Zhang H, Wang C, Liu Y, Wang Q.   +9 more
europepmc   +5 more sources

Study on Phase Transformation Orientation Relationship of HCP-FCC during Rolling of High Purity Titanium

Crystals, 2021
High purity titanium (Ti) thin strip was prepared by rolling with large deformation and was characterized by the means of Transmission Electron Microscopy (TEM), selected area diffraction (SAED) pattern, high-resolution (HRTEM) analysis, as well as ...
Fengmei Bai, Qingliang Zhu, Jiaming Shen, Zhihan Lu, Liqiang Zhang, Naqash Ali, Hongwei Zhou, Xianghua Liu   +7 more
doaj   +4 more sources

Proposed mechanism of HCP → FCC phase transition in titianium through first principles calculation and experiments [PDF]

Scientific Reports, 2018
By means of first principles calculation and experiments, a detailed mechanism is proposed to include the stages of slip, adjustment, and expansion for the HCP → FCC phase transformation with the prismatic relation of $${{\{}{10}\bar{{1}}{0}{\}}}_{{hcp}}{
Jia Xi Yang, Heng Lv Zhao, Hao Ran Gong, Min Song, Qing Qiang Ren   +4 more
doaj   +4 more sources

First Principles Theory of the hcp-fcc Phase Transition in Cobalt [PDF]

Scientific Reports, 2017
Identifying the forces that drive a phase transition is always challenging. The hcp-fcc phase transition that occurs in cobalt at ~700 K has not yet been fully understood, although early theoretical studies have suggested that magnetism plays a main role
Raquel Lizárraga, Fan Pan, Lars Bergqvist, Erik Holmström, Zsolt Gercsi, Levente Vitos   +5 more
doaj   +6 more sources

Phase formation kinetics of metastable fcc cobalt

Materials & Design
The kinetics for phase formation of metastable face-centered cubic (fcc) cobalt is explored using a combination of epitaxial thin film deposition and first-principles calculations.
Anshuman Thakral, Rui Shu, Justinas Palisaitis, Daniel Gall   +3 more
doaj   +4 more sources

Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure. [PDF]

Materials (Basel), 2020
In this work, SixCoCrNi (x = 0, 0.1, 0.2, 0.3, 0.4, molar ratio) alloys were designed by introducing elemental Si into CoCrNi, a medium-entropy alloy (MEA).
Yi H, Bi M, Yang K, Zhang B.
europepmc   +3 more sources

The distorted-fcc phase of samarium

Journal of Physics: Conference Series, 2014
Angle-dispersive x-ray powder diffraction experiments were performed on samarium metal up to 50 GPa. We report that the high-pressure distorted-fcc phase has the same hR24 structure observed in praseodymium, but, unlike praseodymium, samarium does not undergo a transition to a second distorted-fcc phase.
Husband, Rachel, Loa, I., Munro, K., McMahon, Malcolm   +3 more
openaire   +4 more sources

Machine learning guided BCC or FCC phase prediction in high entropy alloys

Journal of Materials Research and Technology
High entropy alloys （HEAs） have excellent properties because they can form simple solid solution (SS) phases, including body-centered cubic (BCC) phase, face-centered cubic (FCC) phase, or FCC + BCC phase, so phase prediction is the first step in alloy ...
Zhongping He, Huan Zhang, Hong Cheng, Meiling Ge, Tianyu Si, Lun Che, Kaiyuan Zheng, Lingrong Zeng, Qingyuan Wang   +8 more
doaj   +2 more sources

Stability of the fcc phase in shocked nickel up to 332 GPa. [PDF]

Nat Commun
Abstract Despite making up 5–20 wt.% of Earth's predominantly iron core, the melting properties of elemental nickel at core conditions remain poorly understood, due largely to a dearth of experimental data. We present an in situ X-ray diffraction study performed on laser shock-compressed samples of bulk nickel, reaching pressures up to ~500 GPa.
Pereira KA, Clarke SM, Singh S, Briggs R, McGuire CP, Lee HJ, Khaghani D, Nagler B, Galtier E, Cunningham E, McGonegle D, Tracy SJ, Vennari C, Gorman MG, Coleman AL, Davis C, Hutchinson T, Eggert JH, Smith RF, Walsh JPS.   +19 more
europepmc   +5 more sources

Deformation Behavior of Pure Titanium With a Rare HCP/FCC Boundary: An Atomistic Study [PDF]

Materials Research, 2020
The compressive and tensile behaviors in a Ti nanopillar with a biphasic hexagonal close-packed (HCP) /face-centered cubic (FCC) phase boundary are theoretically researched using classic molecular dynamic simulation. The results indicate that the HCP/FCC
Junqiang Ren, Xitong Liu, Qingfeng Lei, Qi Wang, Xiaobo Zhang, Xudong Zhang, Xuefeng Lu, Hongtao Xue, Yutian Ding   +8 more
doaj   +1 more source