Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V

Ji, Yanzhou; Heo, Tae Wook; Zhang, Fan; Chen, Long-Qing

doi:10.1007/s11669-015-0436-9

Title: Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-₄V

Abstract

Here we present our theoretical assessment of the kinetic pathways during phase transformations of multi-component Ti alloys. Employing the graphical thermodynamic approach and an integrated free energy function based on the realistic thermodynamic database and assuming that a displacive structural transformation occurs much faster than long-range diffusional processes, we analyze the phase stabilities of Ti-6Al_-4V (Ti-6wt.%Al_-4wt.%V). Our systematic analyses predict a variety of possible kinetic pathways for β to (α + β) transformations leading to different types of microstructures under various heat treatment conditions. In addition, the possibility of unconventional kinetic pathways is discussed. Lastly, we also briefly discuss the application of our approach to general multicomponent/multiphase alloy systems.

Authors:

^[1]; Heo, Tae Wook ^[2]; Zhang, Fan ^[3]; Chen, Long-Qing ^[1]

Pennsylvania State Univ., University Park, PA (United States). Dept. of Material Sciences and Engineering
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Materials Science Division
CompuTherm LLC, Madison, WI (United States)

Publication Date:: Mon Dec 21 00:00:00 EST 2015

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1262190

Report Number(s):: LLNL-JRNL-673240
Journal ID: ISSN 1547-7037

Grant/Contract Number:: AC52-07NA27344; FA8650-12-2-7230

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Phase Equilibria and Diffusion

Additional Journal Information:: Journal Volume: 37; Journal Issue: 1; Journal ID: ISSN 1547-7037

Publisher:: ASM International

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; alloys; kinetics; multicomponent; phase transformation; stability

Citation Formats


                    Ji, Yanzhou, Heo, Tae Wook, Zhang, Fan, and Chen, Long-Qing. Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V.  United States: N. p., 2015. 
Web.  doi:10.1007/s11669-015-0436-9.

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                    Ji, Yanzhou, Heo, Tae Wook, Zhang, Fan, & Chen, Long-Qing. Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V.  United States.  https://doi.org/10.1007/s11669-015-0436-9

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                    Ji, Yanzhou, Heo, Tae Wook, Zhang, Fan, and Chen, Long-Qing. Mon .  
"Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V".  United States.  https://doi.org/10.1007/s11669-015-0436-9.  https://www.osti.gov/servlets/purl/1262190.

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@article{osti_1262190,

  title        = {Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V},

  author       = {Ji, Yanzhou and Heo, Tae Wook and Zhang, Fan and Chen, Long-Qing},

  abstractNote = {Here we present our theoretical assessment of the kinetic pathways during phase transformations of multi-component Ti alloys. Employing the graphical thermodynamic approach and an integrated free energy function based on the realistic thermodynamic database and assuming that a displacive structural transformation occurs much faster than long-range diffusional processes, we analyze the phase stabilities of Ti-6Al-4V (Ti-6wt.%Al-4wt.%V). Our systematic analyses predict a variety of possible kinetic pathways for β to (α + β) transformations leading to different types of microstructures under various heat treatment conditions. In addition, the possibility of unconventional kinetic pathways is discussed. Lastly, we also briefly discuss the application of our approach to general multicomponent/multiphase alloy systems.},

  doi          = {10.1007/s11669-015-0436-9},

  journal      = {Journal of Phase Equilibria and Diffusion},

  number       = 1,

  volume       = 37,

  place        = {United States},

  year         = {Mon Dec 21 00:00:00 EST 2015},

  month        = {Mon Dec 21 00:00:00 EST 2015}

}

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journal, July 2018

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Materials, Vol. 11, Issue 8
DOI: 10.3390/ma11081318

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Title: Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V

Abstract

Citation Formats

Experimental study and thermodynamic modelling of the ternary Al–Ta–Ti system journal, March 2011

Kinetic Pathways of Phase Transformations in Two-Phase Ti Alloys journal, April 2014

A phase field study of strain energy effects on solute–grain boundary interactions journal, December 2011

Phase transformations in Ti-V alloys: Part 1 Martensitic transformations journal, February 1983

Landau free energy for a bcc-hcp reconstructive phase transformation journal, May 2001

Thermodynamic assessment of the Cr–Ti and first assessment of the Al–Cr–Ti systems journal, August 2011

Phase transformations in Ti-V alloys: Part 2 ? and ? formation journal, February 1983

Experimental observations elucidating the mechanisms of structural bcc-hcp transformations in β − Ti alloys journal, October 2006

Thermodynamic calculation of the ternary TiAlNb system journal, May 1992

Phase-Field Models for Microstructure Evolution journal, August 2002

TEM study of metastable β-phase decomposition in rapidly solidified Ti-6Al-4V alloy journal, December 1994

Calculation of phase equilibria in Ti–Al–Cr–Mn quaternary system for developing lower cost titanium alloys journal, October 2011

Theoretical investigation of the precipitation of δ' in Al-Li journal, February 1988

Deformation characteristics of age hardened Ti-6Al-4V journal, January 1977

The precipitation of α-phase in metastable β -phase Ti alloys journal, November 1975

Formation of Widmanstätten Alpha Structure in a Ti–6Al–4V Alloy journal, January 1994

Phase transformations during cooling in α+β titanium alloys journal, March 1998

Thermodynamic and kinetic modeling of bcc phase in the Ti–Al–V ternary system journal, December 2010

The transformation sequences in the cubic→tetragonal decomposition journal, August 2007

Variant selection by dislocations during α precipitation in α/β titanium alloys journal, April 2015

Titanium Alloys - Advances in Properties Control book, May 2013

Decomposition and ordering processes involving thermodynamically first-order order → disorder transformations journal, November 1989

Statistical Thermodynamics and Ordering Kinetics of D019-Type Phase: Application of the Models for H.C.P.-Ti–Al Alloy journal, March 2008

Non-classical homogeneous precipitation mediated by compositional fluctuations in titanium alloys journal, October 2012

Crystallographic variant selection in Ti–6Al–4V journal, October 2004

From chessboard tweed to chessboard nanowire structure during pseudospinodal decomposition journal, April 2009

Computer simulation of spinodal decomposition in ternary systems journal, October 1994

Phase transformations in beta isomorphous titanium alloys journal, June 1970

Possibility of Spinodal Decomposition in ZrO2-Y2O3 Alloys: A Theoretical Investigation journal, June 1995

Kinetics of martensite decomposition in Ti–6Al–4V–xH alloys journal, October 2003

Integrated Computational Materials Engineering (ICME) Approach to Design of Novel Microstructures for Ti-Alloys journal, May 2014

On the process of transition of the cubic-body-centered modification into the hexagonal-close-packed modification of zirconium journal, May 1934

Computational Thermodynamics and materials design journal, June 2001

The Kinetics of Phase Transformations During Continuous Cooling of the Ti6Al4V Alloy from the Single-Phase β Range journal, September 2011

Thermodynamically-consistent phase-field models for solidification journal, November 1993

Pseudospinodal mechanism for fine α/β microstructures in β-Ti alloys journal, February 2014

Development of Thermodynamic Description of a Pseudo-Ternary System for Multicomponent Ti64 Alloy journal, April 2007

Classical potential describes martensitic phase transformations between the α , β , and ω titanium phases journal, August 2008

Phonon dispersion of the bcc phase of group-IV metals. I. bcc titanium journal, May 1991

Influence of processing on microstructure and mechanical properties of (α+β) titanium alloys journal, March 1998

Phase-field model for binary alloys journal, December 1999

Differential scanning calorimetry study and computer modeling of β ⇒ α phase transformation in a Ti-6Al-4V alloy journal, April 2001

On the decomposition of the beta phase in titanium alloys journal, May 1971

Application of artificial neural network for prediction of time–temperature–transformation diagrams in titanium alloys journal, May 2000

Thermodynamic assessment of the ordered B2 phase in the Ti–V–Cr–Al quaternary system journal, June 2011

Thermodynamic calculation of the ternary Ti–Al–Nb system book, January 1992

The Heat Treatment Influence on the Microstructure and Hardness of TC4 Titanium Alloy Manufactured via Selective Laser Melting journal, July 2018

The Heat Treatment Influence on the Microstructure and Hardness of TC4 Titanium Alloy Manufactured via Selective Laser Melting journal, July 2018

Title: Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-₄V

Experimental study and thermodynamic modelling of the ternary Al–Ta–Ti system
journal, March 2011

Kinetic Pathways of Phase Transformations in Two-Phase Ti Alloys
journal, April 2014

A phase field study of strain energy effects on solute–grain boundary interactions
journal, December 2011

Phase transformations in Ti-V alloys: Part 1 Martensitic transformations
journal, February 1983

Landau free energy for a bcc-hcp reconstructive phase transformation
journal, May 2001

Thermodynamic assessment of the Cr–Ti and first assessment of the Al–Cr–Ti systems
journal, August 2011

Phase transformations in Ti-V alloys: Part 2 ? and ? formation
journal, February 1983

Experimental observations elucidating the mechanisms of structural bcc-hcp transformations in $β − Ti$ alloys
journal, October 2006

Thermodynamic calculation of the ternary TiAlNb system
journal, May 1992

Phase-Field Models for Microstructure Evolution
journal, August 2002

TEM study of metastable β-phase decomposition in rapidly solidified Ti-6Al-4V alloy
journal, December 1994

Calculation of phase equilibria in Ti–Al–Cr–Mn quaternary system for developing lower cost titanium alloys
journal, October 2011

Theoretical investigation of the precipitation of δ' in Al-Li
journal, February 1988

Deformation characteristics of age hardened Ti-6Al-4V
journal, January 1977

The precipitation of α-phase in metastable β -phase Ti alloys
journal, November 1975

Formation of Widmanstätten Alpha Structure in a Ti–6Al–4V Alloy
journal, January 1994

Phase transformations during cooling in α+β titanium alloys
journal, March 1998

Thermodynamic and kinetic modeling of bcc phase in the Ti–Al–V ternary system
journal, December 2010

The transformation sequences in the cubic→tetragonal decomposition
journal, August 2007

Variant selection by dislocations during α precipitation in α/β titanium alloys
journal, April 2015

Titanium Alloys - Advances in Properties Control
book, May 2013

Decomposition and ordering processes involving thermodynamically first-order order → disorder transformations
journal, November 1989

Statistical Thermodynamics and Ordering Kinetics of D0₁₉-Type Phase: Application of the Models for H.C.P.-Ti–Al Alloy
journal, March 2008

Non-classical homogeneous precipitation mediated by compositional fluctuations in titanium alloys
journal, October 2012

Crystallographic variant selection in Ti–6Al–4V
journal, October 2004

From chessboard tweed to chessboard nanowire structure during pseudospinodal decomposition
journal, April 2009

Computer simulation of spinodal decomposition in ternary systems
journal, October 1994

Phase transformations in beta isomorphous titanium alloys
journal, June 1970

Possibility of Spinodal Decomposition in ZrO2-Y2O3 Alloys: A Theoretical Investigation
journal, June 1995

Kinetics of martensite decomposition in Ti–6Al–4V–xH alloys
journal, October 2003

Integrated Computational Materials Engineering (ICME) Approach to Design of Novel Microstructures for Ti-Alloys
journal, May 2014

On the process of transition of the cubic-body-centered modification into the hexagonal-close-packed modification of zirconium
journal, May 1934

Computational Thermodynamics and materials design
journal, June 2001

The Kinetics of Phase Transformations During Continuous Cooling of the Ti6Al4V Alloy from the Single-Phase β Range
journal, September 2011

Thermodynamically-consistent phase-field models for solidification
journal, November 1993

Pseudospinodal mechanism for fine α/β microstructures in β-Ti alloys
journal, February 2014

Development of Thermodynamic Description of a Pseudo-Ternary System for Multicomponent Ti64 Alloy
journal, April 2007

Classical potential describes martensitic phase transformations between the $α$ , $β$ , and $ω$ titanium phases
journal, August 2008

Phonon dispersion of the bcc phase of group-IV metals. I. bcc titanium
journal, May 1991

Influence of processing on microstructure and mechanical properties of (α+β) titanium alloys
journal, March 1998

Phase-field model for binary alloys
journal, December 1999

Differential scanning calorimetry study and computer modeling of β ⇒ α phase transformation in a Ti-6Al-4V alloy
journal, April 2001

On the decomposition of the beta phase in titanium alloys
journal, May 1971

Application of artificial neural network for prediction of time–temperature–transformation diagrams in titanium alloys
journal, May 2000

Thermodynamic assessment of the ordered B2 phase in the Ti–V–Cr–Al quaternary system
journal, June 2011

Thermodynamic calculation of the ternary Ti–Al–Nb system
book, January 1992

The Heat Treatment Influence on the Microstructure and Hardness of TC4 Titanium Alloy Manufactured via Selective Laser Melting
journal, July 2018

The Heat Treatment Influence on the Microstructure and Hardness of TC4 Titanium Alloy Manufactured via Selective Laser Melting
journal, July 2018