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Phase transformation of TC4-Fe alloy during continuous heating process
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Institute for Advanced Metallic Materials/School of Materials Science and Engineering,Nanjing

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    Abstract:

    The dilatometry behavior and microstructure of the α+β→β phase transformation in the Ti6Al4V-0.55Fe alloy were investigated during continuous heating process. Four heating rates (1, 5, 10, 15 K/min) are been applied for the dilatometry behavior research. For the α+β→β phase transformation curve, the S-shaped pattern under the different heating rates indicates that the α+β→β phase transformation is a nucleation-growth-controlled process. The mean phase transition activation energy E was obtained by the Kissinger-Akahira-Sunose (KAS) method equals to 200 kJ/mol. By calculating the corresponding Avrami index n with the increase of the β phase volume under the Kolmogorov-Johnson-Mehl-Avrami (KJMA) model, we can divide the Avrami index n into three stages which including the initial phase transformation stage (0

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[Changliang Wang, Feng Li, Fuwen Chen, Hui Chang, Lian Zhou. Phase transformation of TC4-Fe alloy during continuous heating process[J]. Rare Metal Materials and Engineering,2019,48(12):3917~3923.]
DOI:10.12442/j. issn.1002-185X.20190240

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History
  • Received:March 21,2019
  • Revised:May 14,2019
  • Adopted:May 29,2019
  • Online: January 07,2020
  • Published: