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The Effect of Rolling on Deformation-induced Martensite Transformation in a Metastable β-ZrTiAlV Alloy
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College of Materials Science and Engineering,Chongqing University

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TG146.4+14

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    Abstract:

    The influence of rolling reduction and temperatures at room and liquid nitrogen on the formation of deformation-induced martensite and microstructural evolution in a β-ZrTiAlV alloy was investigated by X-ray diffraction (XRD), optical microscopy (OM) and electron backscatter diffraction (EBSD) technique. The analysis of the phase composition and microstructure of the rolled alloy indicated that a deformation-induced martensite phase transformation process from body-centered cubic β to closed-packed hexagonal α'accompanying with (102) <110> twinning in the α'phase were simultaneously detected. With the increase of rolling reduction, deformation-induced phase transformation and the volume fraction of martensite variant were promoted. Nevertheless, lower temperature (liquid nitrogen) resulted in the inhibition of α'martensite transformation and the promotion of the (102) <110> twinning. When the specimen was subjected to the rolling reduction of 5%, plate-like deformation-induced martensite started appearing in the equiaxed parent β grains. However, when the rolling reduction increased to 10%, the deformation-induced martensite would be generated fully within some β grains.

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[Luan baifeng, Xie hui, Liao zhongni, Li feitao, Mao min. The Effect of Rolling on Deformation-induced Martensite Transformation in a Metastable β-ZrTiAlV Alloy[J]. Rare Metal Materials and Engineering,2019,48(8):2495~2501.]
DOI:10.12442/j. issn.1002-185X.20180030

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History
  • Received:January 09,2018
  • Revised:March 05,2018
  • Adopted:March 12,2018
  • Online: September 05,2019
  • Published: