Atomistic mechanism of nucleation and growth of a face-centered orthogonal phase in small-sized single-crystalline Mo

Yan Lu; Shiduo Sun; Yongpan Zeng; Qingsong Deng; Yanhui Chen; Yangzhong Li; Xiaoyan Li; Lihua Wang; Xiaodong Han

doi:10.1080/21663831.2020.1764122

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Atomistic mechanism of nucleation and growth of a face-centered orthogonal phase in small-sized single-crystalline Mo

Original Reports | 更新时间：2026-08-19

- Atomistic mechanism of nucleation and growth of a face-centered orthogonal phase in small-sized single-crystalline Mo
- Materials Research Letters Vol. 8, Issue 9, Pages: 348-355(2020)
- 作者机构：
  
  1. Beijing Key Lab and Institute of Microstructure and Properties of Advanced Materials Beijing University of Technology
  2. Center of Advanced Mechanics and Materials Applied Mechanics Laboratory Department of Engineering Mechanics Tsinghua University
  3. High Performance Computing Department National Supercomputing Center in Shenzhen
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2020.1764122
  CLC：
- Online First：19 May 2020，
  
  Published：2020
- 稿件说明：
移动端阅览
Yan Lu, Shiduo Sun, Yongpan Zeng, et al. Atomistic mechanism of nucleation and growth of a face-centered orthogonal phase in small-sized single-crystalline Mo[J]. Materials Research Letters, 2020, 8(9): 348-355.
DOI：

Yan Lu, Shiduo Sun, Yongpan Zeng, et al. Atomistic mechanism of nucleation and growth of a face-centered orthogonal phase in small-sized single-crystalline Mo[J]. Materials Research Letters, 2020, 8(9): 348-355. DOI： 10.1080/21663831.2020.1764122.

摘要

Abstract

BSTRACTPhase transformation is an important deformation and blunting mechanism at the crack tip of body-centered cubic (BCC) metals. The BCC-to-face-centered orthogonal (FCO) transformation was only predicted by

ab initio

calculations. In this paper

the deformation behavior of the nano-sized single-crystalline Mo is

in situ

investigated in a high-resolution transmission electron microscope at room temperature. We uncover the strain-induced BCC-to-FCO phase transformation. The FCO Mo grows in a layer-by-layer fashion. It is a metastable phase after stress releasing

as confirmed by our

ab initio

calculation. The BCC-to-FCO phase transformation is realized via lattice shearing and shuffling.

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Related Institution

a SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of Education School of Integrated Circuits Southeast University Nanjing People’s Republic of China

b College of Materials Science and Engineering Instrumental Analysis Center Taiyuan University of Science and Technology

c Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta

a SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of Education School of Integrated Circuits Southeast University

d State Key Laboratory for Turbulence and Complex System Department of Mechanics and Engineering Science Peking University

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