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Effect of hydrogenated treatment on high-temperature deformation behavior of as-cast TiZrAlV alloy
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Affiliation:

1.International Joint Laboratory for Light Alloys Ministry of Education, Chongqing Key Laboratory for Light Metals,College of Materials Science and Engineering, Chongqing University;2.InternationalSJointSLaboratorySforSLightSAlloysSMinistrySofSEducation,SChongqing Key Laboratory for Light Metals,CollegeSofSMaterials ScienceSandSEngineering,SChongqingSUniversity,SChongqing

Clc Number:

TG

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    Abstract:

    In order to study the influence of hydrogen on the high temperature deformation behavior and microstructure evolution of 45Ti-47Zr-5Al-3V alloy, a dynamic thermal simulation machine was used for the as-cast alloy with and without hydrogen under different deformation conditions. The flow stress and deformation activation energy of TiZrAlV alloy can be significantly reduced by adding proper amount of hydrogen. The activation energy of unhydrogenated and hydrogenated alloy is 339.7 kJ/mol and 286.5 kJ/mol. Meanwhile, the optimum thermal processing parameters are 700-900℃, 0.01-1s-1. The OM and EBSD microstructure observations show that adding hydrogen can refine the as-cast structure, increase the β-phase content and promote dynamic recrystallization, thus significantly reducing the flow resistance of the alloy, expanding the hot processing window and improving the thermal processing performance.

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[Tang Min, Chen Lijun, Wang Xuan, Luan Baifeng, Liu Qing. Effect of hydrogenated treatment on high-temperature deformation behavior of as-cast TiZrAlV alloy[J]. Rare Metal Materials and Engineering,2021,50(2):568~574.]
DOI:10.12442/j. issn.1002-185X.20200108

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History
  • Received:February 21,2020
  • Revised:April 16,2020
  • Adopted:April 17,2020
  • Online: March 09,2021
  • Published: