Deformation mode transition of Mg-3Li alloy: An in situ neutron diffraction study

Yun Zou, Jian Li, Hong Wang, Ke An, Milin Zhang, Dan Chen, Zhongwu Zhang

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Deformation mode transition of Mg-3Li alloy was investigated using in situ neutron diffraction along with texture characterization. Lattice strain and texture evolution were used as an indicator to tailor the deformation mode under uniaxial tension. It is shown that basal slip, tensile twinning and prismatic slip contribute to the plastic deformation at different stages. A clear hysteresis loop at plastic strain of about 1% is observed during loading/unloading, which is ascribed to the anelasticity resulting from 1012 twins upon unloading. Load redistribution continuously occurs between soft and hard grain orientations and the prismatic slip is dominated around the yield point.

Original languageEnglish
Pages (from-to)331-336
Number of pages6
JournalJournal of Alloys and Compounds
Volume685
DOIs
StatePublished - Nov 15 2016

Funding

This work was supported by the Fundamental Research Funds for the Central Universities ( HEUCFZ1308 , HEUCFT1306 ), the NSFC Funding ( 51371062 and U1460102 ), NSFHLJ ( ZD201411 ), the Project for Innovative Talents of Science and Technology of Harbin ( 2014RFXXJ006 ), and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Heilongjiang Province. The neutron diffraction work on residual stress neutron diffractometer (RSND) at China Academy of Engineering Physics (CAEP) is greatly appreciated.

Keywords

  • In situ neutron diffraction
  • Lattice strain
  • Mg-Li alloy
  • Texture

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