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Evolution of texture and deformation microstructure in Ta–2.5W alloy during cold rolling

Published online by Cambridge University Press:  04 September 2015

Shan Wang ,
Chang Chen ,
Yanlin Jia  and
Mingpu Wang
Shan Wang
Affiliation:
Institute of Industry and Equipment Technology, Hefei University of Technology, Anhui 230009, China
Chang Chen*
Affiliation:
School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China; and National-Local Joint Engineering Research Center of Nonferrous Metals and Processing Technology, Hefei University of Technology, Anhui 230009, China
Yanlin Jia
Affiliation:
School of Materials Science and Engineering, Central South University, Hunan 410083, China
Mingpu Wang
Affiliation:
School of Materials Science and Engineering, Central South University, Hunan 410083, China
*
a)Address all correspondence to this author. e-mail: chench011-33@163.com
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Abstract

The texture and deformation microstructures of Ta–2.5W alloy were investigated during cold rolling process. The microhardness can reach 280 HV when the reduction was 40%. Meanwhile, the mature body-centered cubic rolling texture was developed. The dislocation configuration appeared in a sequence from long straight dislocations and dislocation loops, followed by dislocation tangles and finally to cells boundaries and long, continuous planar boundaries. Microbands did not appear until the reduction reached 20%. The density of microbands increased with increasing reduction. The dislocations within the boundaries of microbands tended to rearrange themselves with increasing strain in a sequence from tangled dislocations, followed by parallel dislocations and finally into dislocation nets. Meanwhile, the boundaries had at least one primary set of parallel dislocations lying along the longitudinal direction of the boundaries during the whole cold-rolled process. The formation of microbands based on the double cross-slip of long straight screw dislocations was confirmed.

Keywords

Ta–W alloymicrostructurecold-rolledmicrobandsdislocations
Type
Articles
Information
Journal of Materials Research , Volume 30 , Issue 18 , 28 September 2015 , pp. 2792 - 2803
Copyright
Copyright © Materials Research Society 2015 

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References

REFERENCES

Trillo, E.A., Esquivel, E.V., Murr, L.E., and Magness, L.S.: Dynamic recrystallization-induced flow phenomena in tungsten-tantalum (4%) [001] single-crystal rod ballistic penetrators. Mater. Charact. 48, 407 (2002).CrossRefGoogle Scholar
Zhou, J-Q., Khan, A.S., Cai, R., and Chen, L.: Comparative study on constitutive modeling of tantalum and tantalum tungsten alloy. J. Iron Steel Res. 13, 68 (2006).CrossRefGoogle Scholar
Taylor, R.E., Kimbrough, W.D., and Powell, R.W.: Thermophysical properties of tantalum, tungsten, and tantalum-10 wt. percent tungsten at high temperatures. J. Less-Common Met. 24, 369 (1971).CrossRefGoogle Scholar
Kuznietz, M., Livne, Z., Cotler, C., and Erez, G.: Diffusion of liquid uranium into foils of tantalum metal and tantalum-10 wt% tungsten alloy up to 1350 °C. J. Nucl. Mater. 152, 235 (1988).CrossRefGoogle Scholar
Nemat-nasser, S. and Kapoor, R.: Deformation behavior of tantalum and a tantalum tungsten alloy. Int. J. Plast. 17, 1351 (2001).CrossRefGoogle Scholar
Nemat-nasser, S. and Isaacs, J.B.: Direct measurement of isothermal flow stress of metals at elevated temperatures and high strain rates with application to Ta and Ta–W alloys. Acta Mater. 45, 907 (1997).CrossRefGoogle Scholar
Schwartz, A.J., Lassila, D.H., and LeBlanc, M.M.: The effects of tungsten addition on the microtexture and mechanical behavior of tantalum plate. Mater. Sci. Eng., A 244, 178 (1998).CrossRefGoogle Scholar
Li, B-L., Cao, W-Q., Liu, Q., and Liu, W.: Flow stress and microstructure of the cold-rolled IF-steel. Mater. Sci. Eng., A 356, 37 (2003).CrossRefGoogle Scholar
Hughes, D.A. and Hansen, N.: Microstructure and strength of nickel at large strains. Acta Mater. 48, 2985 (2000).CrossRefGoogle Scholar
Wert, J.A., Liu, Q., and Hansen, N.: Dislocation boundary formation in a cold-rolled cube-oriented Al single crystal. Acta Mater. 45, 2565 (1997).CrossRefGoogle Scholar
Hughes, D.A.: Microstructure evolution, slip patterns and flow stress. Mater. Sci. Eng., A 319–321, 46 (2001).CrossRefGoogle Scholar
Lin, F.X., Godfrey, A., and Winther, G.: Grain orientation dependence of extended planar dislocation boundaries in rolled aluminium. Scr. Mater. 61, 237 (2009).CrossRefGoogle Scholar
Hansen, N., Huang, X., and Winther, G.: Grain orientation, deformation microstructure and flow stress. Mater. Sci. Eng., A 494, 61 (2008).CrossRefGoogle Scholar
Liu, Q., Jensen, D.J., and Hansen, N.: Effect of grain orientation on deformation structure in cold-rolled polycrystalline aluminium. Acta Mater. 46, 5819 (1998).CrossRefGoogle Scholar
Hughes, D.A. and Hansen, N.: High angle boundaries formed by grain subdivision mechanisms. Acta Mater. 45, 3871 (1997).CrossRefGoogle Scholar
Liu, Q. and Hansen, N.: Deformation microstructure and orientation of f.c.c. crystals. Phys. Status Solidi A 149, 187 (1995).CrossRefGoogle Scholar
Hansen, N. and Jensen, D.J.: Development of microstructure in FCC metals during cold work. Philos. Trans. R. Soc., A 357, 1447 (1999).CrossRefGoogle Scholar
Hughes, D.A., Hansen, N., and Bammann, D.J.: Geometrically necessary boundaries, incidental dislocation boundaries and geometrically necessary dislocations. Scr. Mater. 48, 147 (2003).CrossRefGoogle Scholar
Huang, X. and Winther, G.: Dislocation structures. Part I. Grain orientation dependence. Philos. Mag. 87, 5189 (2007).CrossRefGoogle Scholar
Wang, S., Wang, M-P., Chen, C., Xiao, Z., Jia, Y-L., Li, Z., and Wang, Z-X.: Orientation dependence of the dislocation microstructure in compressed body-centered cubic molybdenum. Mater. Charact. 91, 10 (2014).CrossRefGoogle Scholar
Wei, Y-L., Godfrey, A., Liu, W., Liu, Q., Huang, X., Hansen, N., and Winther, G.: Dislocations, boundaries and slip systems in cube grains of rolled aluminium. Scr. Mater. 65, 355 (2011).CrossRefGoogle Scholar
Hong, C., Huang, X., and Winther, G.: Dislocation content of geometrically necessary boundaries aligned with slip planes in rolled aluminium. Philos. Mag. A 93, 3118 (2013).CrossRefGoogle Scholar
Landau, P., Makov, G., Shneck, R.Z., and Venkert, A.: Universal strain–temperature dependence of dislocation structure evolution in face-centered-cubic metals. Acta Mater. 59, 5342 (2011).CrossRefGoogle Scholar
Landau, P., Mordehai, D., Venkert, A., and Makov, G.: Universal strain-temperature dependence of dislocation structures at the nanoscale. Scr. Mater. 66, 135 (2012).CrossRefGoogle Scholar
Kumar, M., Schwartz, A.J., and King, W.E.: Correlating observations of deformation microstructures by TEM and automated EBSD techniques. Mat. Sci. Eng., A 309–310, 78 (2001).CrossRefGoogle Scholar
Barnett, M.R. and Jonas, J.J.: Influence of ferrite rolling temperature on microstructure and texture in deformed low C and IF steels. ISIJ Int. 37, 697 (1997).CrossRefGoogle Scholar
Zhu, L., Sandim, H.R.Z., Seefeldt, M., and Verlinden, B.: Grain subdivision of a Nb polycrystal deformed by successive compression tests. Mater. Sci. Forum 667–669, 373 (2011).Google Scholar
Zhu, L. and Seefeldt, M., and Verlinden, B.: Deformation banding in a Nb polycrystal deformed by successive compression tests. Acta Mater. 60, 4349 (2012).CrossRefGoogle Scholar
Chen, Q-Z., Quadir, M.Z., and Duggan, B.J.: Shear band formation in IF steel during cold rolling at medium reduction levels. Philos. Mag. 86, 3633 (2006).CrossRefGoogle Scholar
Afrin, N., Quadir, M.Z., Bassman, L., Driver, J.H., Alboud, A., and Ferry, M.: The three-dimensional nature of microbands in a channel die compressed Goss-oriented Ni single crystal. Scr. Mater. 64, 221 (2011).CrossRefGoogle Scholar
Wang, S., Chen, C., Jia, Y-L., and Wang, M-P.: The banded structure and its effects on the transverse elongation and textures of Mo bars. Adv. Eng. Mater. 16, 1119 (2014).CrossRefGoogle Scholar
Romanov, A.E. and Vladimirov, V.I.: In Dislocations in solids, Nabarro, F.R.N. ed. Elsevier, Amsterdam, Netherlands, 1992; p. 200.Google Scholar
Chen, Q-Z., Ngan, A.H.W., and Duggan, B.J.: Microstructure evolution in an interstitial-free steel during cold rolling at low strain levels. Proc. R. Soc. London, Ser. A 459, 1661 (2003).CrossRefGoogle Scholar