The Role of Deformation Twinning on Creep of Titanium Alloys

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Normally, deformation twinning is a process that occurs at rates approaching the speed of sound in bulk metals once a critical stress has been reached. However, recently it has been shown that twins grow at speeds many orders of magnitude lower than the speed of sound during room temperature creep of titanium alloys. The net result is that this twinning process can contribute to the low-temperature (less than 0.25*Tm) creep behavior of α, α−β, and β−titanium alloys. For example, α-Ti alloys with small grain size do not extensively deform by twinning and hence show little overall creep strain. These recent developments are reviewed in this paper. This work is funded by the National Science Foundation under Grant Number DMR-0517351.

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Periodical:

Materials Science Forum (Volumes 561-565)

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Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

121-126

Citation:

S. Ankem and P. G. Oberson, "The Role of Deformation Twinning on Creep of Titanium Alloys", Materials Science Forum, Vols. 561-565, pp. 121-126, 2007

Online since:

October 2007

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[1] H. Adenstedt: Met. Progr. Vol. 56 (1949), pp.658-60.

[2] R.R. Zeyfang, R. Martin and H. Conrad: Mater. Sci. Eng. Vol. 4(1971), pp.134-140.

[3] B.C. Odegard and A.W. Thompson: Metall. Trans. Vol. 5 (1974), pp.1207-1213.

[4] M.A. Imam and C.M. Gilmore: Metall. Trans. A Vol. 10A (1979), pp.419-425.

[5] W.H. Miller, R.T. Chen and E.A. Starke: Metall. Trans. A Vol. 18A (1987), pp.1451-1468.

[6] T. Neeraj, D.H. Hou, G.S. Daehn and M.J. Mills: Acta Mater. Vol. 48 (2000), pp.1225-1238.

[7] S. Ankem, C.A. Greene and S. Singh: Scripta Metall. Mater. Vol. 15 (1994), pp.803-808.

[8] A.K. Aiyangar, B.W. Neuberger, P.G. Oberson and S. Ankem: Metall. Mater. Trans. A Vol. 36A (2005), pp.637-644.

[9] G.E. Dieter: Mechanical Metallurgy (McGraw-Hill, New York 1986).

[10] M.A. Meyers, O. Vöhringer and V.A. Lubarda: Acta Mater. Vol. 49 (2001), pp.4025-4039.

[11] G.T. Gray III: J. Phys. IV Vol. 7 (1997), pp.423-428.

[12] P.G. Oberson: PhD Dissertation: Experimental and Theoretical Investigation of Low Temperature Creep Deformation Behavior of Single-Phase Titanium Alloys (University of Maryland, College Park 2006).

[13] Z. Liu and G. Welsch: Metall. Trans. A Vol. 19A(1988), pp.1121-1125.

[14] A. Ramesh and S. Ankem: Metall. Mater. Trans. A Vol. 33A (2002), pp.1137-1144.

[15] M.J. Blackburn and J.C. Williams: Trans. Metall. Soc. AIME Vol. 23 (1968), pp.2461-2469.

[16] D. Doraiswamy and S. Ankem: Acta Mater. Vol. 51 (2003), pp.1607-1619.

[17] J.W. Christian and S. Mahajan: Prog. Mater Sci. Vol. 94 (1995), pp.1-157.

[18] C.L. Magee, D.W. Hoffman and R.G. Davies: Phil. Mag. Vol. 23 (1971), pp.1531-1540.

[19] P.G. Oberson and S. Ankem: Phys. Rev. Lett. Vol. 95 (2005), pp.165501-4.

[20] C.M. Hudson: PhD Dissertation: Investigation of Low Temperature Creep Deformation Behavior of a Metastable Beta Titanium-14. 8Wt%Vanadium Alloy (University of Maryland, College Park 2004).

[21] C.A. Greene: PhD Dissertation: Fundamental Studies on Ambient Temperature Creep Deformation Behavior of Alpha and Alpha-Beta Titanium Alloys (University of Maryland, College Park 1994).

[22] A. Jaworski Jr. and S. Ankem: Metall. Mater. Trans. A Vol. 37A (2006), pp.2755-65.

[23] S. Ankem and H. Margolin: Metall. Trans. A Vol. 17A (1986), pp.2209-26.