Phase transformation mechanism of Ti-6Al-4V titanium alloy induced by tensile deformation

Sun Hao

doi:10.7513/j.issn.1004-7638.2024.04.010

Volume 45 Issue 4

Aug. 2024

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Sun Hao. Phase transformation mechanism of Ti-6Al-4V titanium alloy induced by tensile deformation[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 62-67. doi: 10.7513/j.issn.1004-7638.2024.04.010

Citation:

Sun Hao. Phase transformation mechanism of Ti-6Al-4V titanium alloy induced by tensile deformation[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 62-67. doi: 10.7513/j.issn.1004-7638.2024.04.010

Sun Hao. Phase transformation mechanism of Ti-6Al-4V titanium alloy induced by tensile deformation[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 62-67. doi: 10.7513/j.issn.1004-7638.2024.04.010

Citation:

Sun Hao. Phase transformation mechanism of Ti-6Al-4V titanium alloy induced by tensile deformation[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 62-67. doi: 10.7513/j.issn.1004-7638.2024.04.010

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Phase transformation mechanism of Ti-6Al-4V titanium alloy induced by tensile deformation

doi: 10.7513/j.issn.1004-7638.2024.04.010

Sun Hao^{1, 2, 3
,}

1.
Advanced Batteries and Materials Engineering Research Center, Guizhou Light Industry Technical College, Guiyang 550025，Guizhou, China
2.
Provincial Collaborative Innovation Center of Used Power Batteries Recycling, Guiyang 550025, Guizhou, China
3.
Graphene Materials Engineering Research Center of Guizhou Colleges and Universities, Guiyang 550025, Guizhou, China

Received Date: 2023-10-17
Publish Date: 2024-08-30

Abstract

Abstract

Phase transition behavior plays a crucial role on the plastic deformation and mechanical properties of titanium alloy. Therefore, it is very necessary to study the phase transition behavior and further reveal the corresponding mechanism of titanium alloy. In this paper, a novel heat treatment process was successfully used to introduce a fine β grain martensite structure into Ti-6Al-4V titanium alloy. Deformation-induced HCP phase to FCC phase transition behavior under tensile loading conditions was discovered, and the corresponding phase transition mechanism was revealed. The crystallographic orientation relationship between the HCP phase and the newly formed FCC phase is: (0002)HCP || $(11\bar1 )$FCC and $<2\bar1\bar10 >$HCP || <011> FCC. The phase transition mechanism is proposed based on the crystallographic orientation relationship between the two phases: 1/3$<10\bar10 > $ type Shockley partial dislocations slip on every two (0001) atomic basal planes. This phase transition mechanism was further verified by first principles that calculated the change of (0001)$<10\bar10 >$ stacking fault energy during HCP to FCC phase transition.
- Ti-6Al-4V titanium alloy,
- tensile deformation,
- martensite,
- FCC phase transition

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References(21)

References

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