Mechanical Behavior and Microstructural Evolution during Superplastic Deformation of Ti&amp;ndash;6Al&amp;ndash;4V

Yang, Hongbo; Gurewitz, G.; Mukherjee, Amiya K.

doi:10.2320/matertrans1989.32.465

Cited by 29 publications

(12 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They accounted for their observations by proposing that the free energy of the alpha increased by about 500 J/mol as a result of straining, although they did not suggest the source of this increase. Since this first report, other researchers have now provided evidence of such dynamic transformation in other titanium alloys [2][3][4].…”

mentioning

confidence: 92%

Determination of the critical stress for the initiation of dynamic transformation in commercially pure titanium

et al. 2017

View full text Add to dashboard Cite

The dynamic transformation of alpha to beta is shown to take place in titanium at temperatures below the beta transus. The driving force for this transformation is the net softening associated with the formation of the lower flow stress beta phase. The obstacle to the transformation consists of the free energy difference between the phases as well as the work of dilatation during the phase change. Here the critical condition for transformation is defined as the moment when the driving force becomes equal to the obstacle energy. This approach is supported by data obtained from compression tests.

show abstract

mentioning

confidence: 92%

Determination of the critical stress for the initiation of dynamic transformation in commercially pure titanium

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Titanium alloys are well known for their potential as superplastic materials for use in a range of areas including aerospace engineering, power generation and in biomedical applications [1,2].…”

Section: Introductionmentioning

confidence: 99%

Factors influencing superplasticity in the Ti-6Al-4V alloy processed by high-pressure torsion

Shahmir

Naghdi

Pereira

et al. 2018

Materials Science and Engineering: A

View full text Add to dashboard Cite

Two different initial microstructures, martensitic and lamellar, were developed in a Ti-6Al-4V alloy to examine their effect on the high temperature mechanical properties and superplasticity after high-pressure torsion (HPT). Significant grain refinement was achieved in both conditions with grain sizes after HPT processing of ~30 and ~40 nm, respectively. The nanocrystalline alloy in both conditions was subjected to mechanical testing at 923-1073 K with strain rates in the range from 10-3 to 10-1 s-1. The martensitic and lamellar alloys exhibited excellent ductility at these high temperatures including superplastic elongations at 973 K with maximum elongations of 815% and 690%, respectively. The fcc phase was stable at elevated temperatures in the martensitic alloy and the results suggests the fcc phase may contribute to the superior superplastic properties of the martensitic alloy.

show abstract

“…For example, Koike et al 4) investigated the dynamic phase transformation in a Ti5.3Al1.4Fe (mass%) alloy under superplastic deformation and found that the ¡¼¢ transformation in the ¡+¢ phase region was significantly enhanced and the ¢ transus was reduced by approximate 70 K. Yang et al 5) also found that the tensile deformation could accelerate the ¡¼¢ transformation in the Ti6Al4V alloy. In addition, an enhanced ¢¼¡ 2 transformation was also reported in a titanium-based Ti 3 Al intermetallic compound.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Phase Transformation during Hot-Forging Process of a Powder Metallurgy α+β Titanium Alloy

Liu

Matsumoto

et al. 2012

Mater. Trans.

View full text Add to dashboard Cite

show abstract

Mechanical Behavior and Microstructural Evolution during Superplastic Deformation of Ti–6Al–4V

Cited by 29 publications

References 9 publications

Determination of the critical stress for the initiation of dynamic transformation in commercially pure titanium

Determination of the critical stress for the initiation of dynamic transformation in commercially pure titanium

Factors influencing superplasticity in the Ti-6Al-4V alloy processed by high-pressure torsion

Dynamic Phase Transformation during Hot-Forging Process of a Powder Metallurgy α+β Titanium Alloy

Contact Info

Product

Resources

About

Mechanical Behavior and Microstructural Evolution during Superplastic Deformation of Ti&ndash;6Al&ndash;4V

Cited by 29 publications

References 9 publications

Determination of the critical stress for the initiation of dynamic transformation in commercially pure titanium

Determination of the critical stress for the initiation of dynamic transformation in commercially pure titanium

Factors influencing superplasticity in the Ti-6Al-4V alloy processed by high-pressure torsion

Dynamic Phase Transformation during Hot-Forging Process of a Powder Metallurgy &alpha;+&beta; Titanium Alloy

Contact Info

Product

Resources

About

Mechanical Behavior and Microstructural Evolution during Superplastic Deformation of Ti–6Al–4V

Dynamic Phase Transformation during Hot-Forging Process of a Powder Metallurgy α+β Titanium Alloy