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HomeKey Engineering MaterialsKey Engineering Materials Vol. 641Processing Maps of the Ti-6Al-4V Alloy in a...

Processing Maps of the Ti-6Al-4V Alloy in a Forging Process Design

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Abstract:

The paper presents the results of a complex study of the Ti-6Al-4V alloy, conducted with the application of the dynamic material modelling (DMM) method, in a wide range of temperatures, strain rates and strains. A compression test was carried out in a wide range of temperatures (800 – 1100°C) and strain rates (0.01 – 100 s^-1), up to the constant final true strain value of 0.9. The obtained stress-strain curves were a basis for determining deformation activation energy with the use of an Arrhenius plot and a correlation between the Zener-Hollomon parameter and flow stress, for which the constitutive equation proposed by Sellars was used. The power dissipation efficiency parameter was calculated. The maps of power dissipation as the function of temperature and strain rate were plotted in the form of the isoclines of the power dissipation efficiency parameter expressed in %. The processing maps exhibited the range of occurrence and recrystallization of the primary α phase, the degree of the β phase recrystallization progress against the background of the process deformation windows and instability flow domain. An analysis of the influence of process parameters up on the microstructure and hardness changes was conducted.

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Periodical:

Key Engineering Materials (Volume 641)

Pages:

190-197

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.641.190

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Online since:

April 2015

Authors:

Aneta Łukaszek-Sołek*, Janusz Krawczyk

Keywords:

Microstructure, Processing Maps, Titanium Alloy, Zener-Hollomon Parameter

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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[1] R. Boyer, G. Welsch, E.W. Collings, Materials properties handbook: Titanium alloys, ASM International, Materials Park Oh, (1994).

[2] N. Park, J. Yeom, Y. Na, Characterization of deformation stability in hot forging of conventional Ti–6Al–4V using processing maps, J. Mater. Process. Technol. 130–131 (2002) 540–545.

DOI: 10.1016/s0924-0136(02)00801-4

[3] Y.V.R.K. Prasad, T. Seshacharyulu, Processing maps for hot working of titanium alloys, Mater. Sci. Eng. A 243 (1998) 82–88.

DOI: 10.1016/s0921-5093(97)00782-x

[4] J. Luo, M. Li, W. Yu, H. Li, Effect of the strain on processing maps of titanium alloys in isothermal compression, Mater. Sci. Eng. A 504 (2009) 90–98.

DOI: 10.1016/j.msea.2008.10.020

[5] T. Seshacharyulu, S.C. Medeiros, W.G. Frazier, Y.V.R.K. Prasad, Hot working of commercial Ti–6Al–4V with an equiaxed α–β microstructure: materials modeling considerations, Mater. Sci. Eng. A 284 (2000) 184–194.

DOI: 10.1016/s0921-5093(00)00741-3

[6] Y.V.R. K Prasad, T Seshacharyulu, S. C Medeiros, W. G Frazier, Influence of oxygen content on the forging response of equiaxed (α+β) preform of Ti–6Al–4V: commercial vs. ELI grade, J. Mater. Process. Technol. 108 (2001) 320–327.

DOI: 10.1016/s0924-0136(00)00832-3

[7] S. Bruschi, S. Poggio, F. Quadrini, M.E. Tata, Workability of Ti–6Al–4V alloy at high temperatures and strain rates, Mater. Lett. 58 (2004) 3622-3629.

DOI: 10.1016/j.matlet.2004.06.058

[8] A. Momeni, S.M. Abbasi, Effect of hot working on ﬂow behavior of Ti–6Al–4V alloy in single phase and two phase regions, Mater. Des. 31 (2010) 3599–3604.

DOI: 10.1016/j.matdes.2010.01.060

[9] R. G. Guan, Y. T. Je, Z. Y. Zhao, C. S. Lee, Effect of microstructure on deformation behavior of Ti–6Al–4V alloy during compressing process, Mater. Des. 36 (2012) 796–803.

DOI: 10.1016/j.matdes.2011.11.057

[10] J. Majta, Deformation and properties. Micro-alloyed steels. Selected problems, Ed. AGH University of Science and Technology, Krakow, Poland, 2008 (in Polish).

[11] J. Zhang, H. Di, H. Wang, K. Mao, T. Ma, Y. Cao, Hot deformation behavior of Ti-15-3 titanium alloy: a study using processing maps, activation energy map, and Zener–Hollomon parameter map, J. Mater. Sci. 47 (2012) 4000-4011.

DOI: 10.1007/s10853-012-6253-1

[12] Y.V.R.K. Prasad, H.L. Gegel, S.M. Doraivelu, J.C. Malas, J.T. Morgan, K.A. Lark, D.R. Barker, Modeling of Dynamic Materials Behavior in Hot Deformation: Forging of Ti-6242, Metall. Trans. A 15 (1984) 1883-92.

DOI: 10.1007/bf02664902

[13] A. Łukaszek-Sołek, Technological aspect of processing maps for the AA2099 alloy, submitted to Acta Metall. Sin. (Engl. Lett. ) (2014).

DOI: 10.1007/s40195-014-0150-3

[14] Y.V.R.K. Prasad, S. Sasidhara, Hot working guide: A compendium of processing maps, ASM International, Materials Park OH, (1997).

[15] Y.V.R.K. Prasad, Processing maps: A status report, J. Mater. Eng. Perform. 12 (2003) 638-645.