Alpha 2 precipitation in exposed Ti6A14V

Zhiwei Wu; Michael H. Loretto; V. Venkatesh; Hamish L. Fraser; R. E. A. Williams; G. B. Viswanathan; S. Nag; Rajarshi Banerjee; Matthew Thomas

Alpha 2 precipitation in exposed Ti6A14V

Zhiwei Wu, Michael H. Loretto, V. Venkatesh, Hamish L. Fraser, R. E. A. Williams, G. B. Viswanathan, S. Nag, Rajarshi Banerjee, Matthew Thomas

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

Abstract

Samples of Ti6Al4V have been held at 500°C for times up to 5 weeks and in agreement with phase diagram calculations and with earlier work it has been confirmed that particles of alpha 2 are formed under these conditions. Transition electron microscopy (TEM) and atom probe have been used to characterise the alpha 2 precipitates. In addition the fraction of beta present after these long heat treatments was measured and found to be significantly higher than phase diagram predictions. The fatigue and tensile pr0pertieS of exposed samples have been compared with those of samples slowly cooled from above the transus and TEM is being carried out in order to understand the observed properties. Some work has also been carried out on an alloy developed recently by Timet, Ti-5Al-4V-0. 6Mo-0. 4Fe and alpha 2 is also seen in heat treated samples of the alloy. At the SEM level the volume fraction of beta is again far higher than is predicted from modelling work.

Original language	English
Title of host publication	Proceedings of the 12th World Conference on Titanium (TI-2011)
Subtitle of host publication	19-24 June, 2011; Beijing China
Editors	Lian Zhou, Hui Chang, Yafeng Lu, Dongsheng Xu
Place of Publication	Beijing China
Publisher	Science Press
Pages	560-563
Number of pages	4
Volume	1
ISBN (Electronic)	9787030338952
ISBN (Print)	9787030338990
Publication status	Published - 2012
Externally published	Yes
Event	The World Conference on Titanium 2011 - China National Convention Center, Beijing, China Duration: 19 Jun 2011 → 24 Jun 2011 Conference number: 12th https://books.google.com.au/books/about/Ti_2011_Proceedings_of_the_12th_World_Co.html?id=NrJwMwEACAAJ&redir_esc=y

Conference

Conference	The World Conference on Titanium 2011
Abbreviated title	Ti 2011
Country	China
City	Beijing
Period	19/06/11 → 24/06/11
Internet address	https://books.google.com.au/books/about/Ti_2011_Proceedings_of_the_12th_World_Co.html?id=NrJwMwEACAAJ&redir_esc=y

Keywords

Long range order
Tensile and fatigue properties
Titanium 641

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Cite this

Wu, Zhiwei ; Loretto, Michael H. ; Venkatesh, V. ; Fraser, Hamish L. ; Williams, R. E. A. ; Viswanathan, G. B. ; Nag, S. ; Banerjee, Rajarshi ; Thomas, Matthew. / Alpha 2 precipitation in exposed Ti6A14V. Proceedings of the 12th World Conference on Titanium (TI-2011): 19-24 June, 2011; Beijing China. editor / Lian Zhou ; Hui Chang ; Yafeng Lu ; Dongsheng Xu. Vol. 1 Beijing China : Science Press, 2012. pp. 560-563

@inproceedings{30c6bbae11c14213a513a83f84149762,

title = "Alpha 2 precipitation in exposed Ti6A14V",

abstract = "Samples of Ti6Al4V have been held at 500°C for times up to 5 weeks and in agreement with phase diagram calculations and with earlier work it has been confirmed that particles of alpha 2 are formed under these conditions. Transition electron microscopy (TEM) and atom probe have been used to characterise the alpha 2 precipitates. In addition the fraction of beta present after these long heat treatments was measured and found to be significantly higher than phase diagram predictions. The fatigue and tensile pr0pertieS of exposed samples have been compared with those of samples slowly cooled from above the transus and TEM is being carried out in order to understand the observed properties. Some work has also been carried out on an alloy developed recently by Timet, Ti-5Al-4V-0. 6Mo-0. 4Fe and alpha 2 is also seen in heat treated samples of the alloy. At the SEM level the volume fraction of beta is again far higher than is predicted from modelling work.",

keywords = "Long range order, Tensile and fatigue properties, Titanium 641",

author = "Zhiwei Wu and Loretto, {Michael H.} and V. Venkatesh and Fraser, {Hamish L.} and Williams, {R. E. A.} and Viswanathan, {G. B.} and S. Nag and Rajarshi Banerjee and Matthew Thomas",

year = "2012",

language = "English",

isbn = "9787030338990",

volume = "1",

pages = "560--563",

editor = "Lian Zhou and Hui Chang and Yafeng Lu and Dongsheng Xu",

booktitle = "Proceedings of the 12th World Conference on Titanium (TI-2011)",

publisher = "Science Press",

address = "China",

note = "The World Conference on Titanium 2011, Ti 2011 ; Conference date: 19-06-2011 Through 24-06-2011",

url = "https://books.google.com.au/books/about/Ti_2011_Proceedings_of_the_12th_World_Co.html?id=NrJwMwEACAAJ&redir_esc=y",

}

Wu, Z, Loretto, MH, Venkatesh, V, Fraser, HL, Williams, REA, Viswanathan, GB, Nag, S, Banerjee, R & Thomas, M 2012, Alpha 2 precipitation in exposed Ti6A14V. in L Zhou, H Chang, Y Lu & D Xu (eds), Proceedings of the 12th World Conference on Titanium (TI-2011): 19-24 June, 2011; Beijing China. vol. 1, Science Press, Beijing China, pp. 560-563, The World Conference on Titanium 2011, Beijing, China, 19/06/11.

Alpha 2 precipitation in exposed Ti6A14V. / Wu, Zhiwei; Loretto, Michael H.; Venkatesh, V.; Fraser, Hamish L.; Williams, R. E. A.; Viswanathan, G. B.; Nag, S.; Banerjee, Rajarshi; Thomas, Matthew.

Proceedings of the 12th World Conference on Titanium (TI-2011): 19-24 June, 2011; Beijing China. ed. / Lian Zhou; Hui Chang; Yafeng Lu; Dongsheng Xu. Vol. 1 Beijing China : Science Press, 2012. p. 560-563.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

TY - GEN

T1 - Alpha 2 precipitation in exposed Ti6A14V

AU - Wu, Zhiwei

AU - Loretto, Michael H.

AU - Venkatesh, V.

AU - Fraser, Hamish L.

AU - Williams, R. E. A.

AU - Viswanathan, G. B.

AU - Nag, S.

AU - Banerjee, Rajarshi

AU - Thomas, Matthew

N1 - Conference code: 12th

PY - 2012

Y1 - 2012

N2 - Samples of Ti6Al4V have been held at 500°C for times up to 5 weeks and in agreement with phase diagram calculations and with earlier work it has been confirmed that particles of alpha 2 are formed under these conditions. Transition electron microscopy (TEM) and atom probe have been used to characterise the alpha 2 precipitates. In addition the fraction of beta present after these long heat treatments was measured and found to be significantly higher than phase diagram predictions. The fatigue and tensile pr0pertieS of exposed samples have been compared with those of samples slowly cooled from above the transus and TEM is being carried out in order to understand the observed properties. Some work has also been carried out on an alloy developed recently by Timet, Ti-5Al-4V-0. 6Mo-0. 4Fe and alpha 2 is also seen in heat treated samples of the alloy. At the SEM level the volume fraction of beta is again far higher than is predicted from modelling work.

AB - Samples of Ti6Al4V have been held at 500°C for times up to 5 weeks and in agreement with phase diagram calculations and with earlier work it has been confirmed that particles of alpha 2 are formed under these conditions. Transition electron microscopy (TEM) and atom probe have been used to characterise the alpha 2 precipitates. In addition the fraction of beta present after these long heat treatments was measured and found to be significantly higher than phase diagram predictions. The fatigue and tensile pr0pertieS of exposed samples have been compared with those of samples slowly cooled from above the transus and TEM is being carried out in order to understand the observed properties. Some work has also been carried out on an alloy developed recently by Timet, Ti-5Al-4V-0. 6Mo-0. 4Fe and alpha 2 is also seen in heat treated samples of the alloy. At the SEM level the volume fraction of beta is again far higher than is predicted from modelling work.

KW - Long range order

KW - Tensile and fatigue properties

KW - Titanium 641

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M3 - Conference Paper

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SN - 9787030338990

VL - 1

SP - 560

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BT - Proceedings of the 12th World Conference on Titanium (TI-2011)

A2 - Zhou, Lian

A2 - Chang, Hui

A2 - Lu, Yafeng

A2 - Xu, Dongsheng

PB - Science Press

CY - Beijing China

T2 - The World Conference on Titanium 2011

Y2 - 19 June 2011 through 24 June 2011

ER -