Paper Titles

Elasticity Effect in Dynamic Response of Beams with Pre-Cracks Impinged by Striker
p.493

Experimental Research on Dynamic Mechanical Properties of 5083 Aluminum Alloy
p.497

Experimental Study of Sandwich Panels Subjected to Foam Projectile Impact
p.501

Finite Element and Experimental Study of the Fiber-Reinforced Composite Laminates under Low-Velocity Impact
p.505

Microstructure Evolution of Ti-46.5Al-2Nb-2Cr at Different Strain Rates and Temperatures
p.509

Numerical Studies on the Blast-Resistant Capacity of Stiffened Multiple-Arch Panel
p.514

Numerical Study of Round-Robin Tests on the Split Hopkinson Pressure Bar Technique
p.518

On the Strength Enhancement of Cellular Materials under Dynamic Loadings
p.522

Possible Schemes to Reduce Nose Blunting of High-Speed Projectile into Concrete
p.526

HomeKey Engineering MaterialsKey Engineering Materials Vols. 535-536Microstructure Evolution of Ti-46.5Al-2Nb-2Cr at...

Microstructure Evolution of Ti-46.5Al-2Nb-2Cr at Different Strain Rates and Temperatures

Article Preview

Abstract:

The microstructure evolution of Ti-46.5Al-2Nb-2Cr with different microstructure types loaded under a large range of strain rates and elevated temperatures is investigated by TEM. The results show that deformation twins are the main deformation mode under high strain rate loadings and both ordinary dislocation and super-dislocation are the additional modes under quasi-static loadings. The proportion of twinned grains increases with the increased strain rates.

You might also be interested in these eBooks

Advances in Engineering Plasticity XI

Info:

Periodical:

Key Engineering Materials (Volumes 535-536)

Pages:

509-513

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.535-536.509

Citation:

Cite this paper

Online since:

January 2013

Authors:

Xiang Zan, Yu Wang, Yue Hui He, Yong Liu, Wei Dong Song

Keywords:

High Strain Rate, High-Temperature, Microstructure Evolution, TiAl Intermetallics

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Song, S., G.T. Gray III, Influence of temperature and strain rate on slip and twinning behavior of zr. Metallurgical and Materials Transactions A, 1995. 26(10): pp.2665-2675.

DOI: 10.1007/bf02669423

[2] Kim, Y.-W., Ordered Intermetallic Alloy Part III: Gamma Titanium Aluminides. JOM, 1994. 46: pp.30-39.

DOI: 10.1007/bf03220745

[3] Marketz, W.T., F.D. Fischer, H. Clemens, Deformation mechanisms in TiAl intermetallics--experiments and modeling. International Journal of Plasticity, 2003. 19(3): pp.281-321.

DOI: 10.1016/s0749-6419(01)00036-5

[4] Shechtman, D., M. Blackburn, H. Lipsitt, The plastic deformation of TiAl. Metallurgical Transactions, 1974. 5(6): pp.1373-1381.

DOI: 10.1007/bf02646623

[5] Appel, F., R. Wagner, Microstructure and deformation of two-phase g-titanium aluminides. Materials Science and Engineering: R: Reports, 1998. 22(5): pp.187-268.

DOI: 10.1016/s0927-796x(97)00018-1

[6] Wu, X., Review of alloy and process development of TiAl alloys. Intermetallics, 2006. 14(10–11): pp.1114-1122.

DOI: 10.1016/j.intermet.2005.10.019

[7] Yamaguchi, M., H. Inui, S. Yokoshima, K. Kishida, D.R. Johnson, Recent progress in our understanding of deformation and fracture of two-phase and single-phase TiAl alloys. Materials Science and Engineering: A, 1996. 213(1-2): pp.25-31.

DOI: 10.1016/0921-5093(96)10242-2

[8] Jin, Z., C. Cady, G.T. Gray III, Y.-W. Kim, Mechanical Behavior of a Fine-Grained Duplex Gamma-TiAl Alloy. Metallurgical and Materials Transactions A, 2000. 31: pp.1007-1016.

DOI: 10.1007/s11661-000-0042-1

[9] Maloy, S.A., G.T. Gray III, High strain rate deformation of Ti48Al2Nb2Cr. Acta Materialia, 1996. 44(5): pp.1741-1756.

DOI: 10.1016/1359-6454(95)00329-0

[10] Sun, Z.M., T. Kobayashi, H. Fukumasu, I. Yamamoto, K. Shibue, Tensile Properties and Fracture Toughness of a Ti-45Al-1.6Mn Alloy at Loading Velocities of up to 12m/s. Metallurgical and Materials Transactions A, 1998. 29: pp.263-277.

DOI: 10.1007/s11661-998-0178-y

[11] Huang, W., X. Zan, X. Nie, M. Gong, Y. Wang, Y.M. Xia, Experimental study on the dynamic tensile behavior of a poly-crystal pure titanium at elevated temperatures. Materials Science and Engineering A, 2007. 443(1-2): pp.33-41.

DOI: 10.1016/j.msea.2006.06.041

[12] Zan, X., Y. Wang, Y. Xia, Y. He, Strain rate effect on the tensile behavior of Duplex Ti-46.5Al-2Nb-2Cr intermetallics at elevated temperatures. Materials Science and Engineering: A, 2008. 498(1-2): pp.296-301.

DOI: 10.1016/j.msea.2008.08.002

[13] Zan, X., Y.-h. He, Y. Wang, Y.-m. Xia, Dynamic behavior and fracture mode of TiAl intermetallics with different microstructures at elevated temperatures. Transactions of Nonferrous Metals Society of China, 2011. 21(1): pp.45-51.

DOI: 10.1016/s1003-6326(11)60676-6

[14] Imayev, V.M., R.M. Imayev, G.A. Salishchev, K.B. Povarova, M.R. Shagiev, A.V. Kuznetsov, Effect of strain rate on twinning and room temperature ductility of TiAl with fine equiaxed microstructure. Scripta Materialia, 1997. 36(8): pp.891-897.

DOI: 10.1016/s1359-6462(96)00465-4

[15] Reed-Hill, R., R. Abbaschian, Physical Metallurgy Principles. 3rd ed. 1992, Boston, MA: PWS-Kent.

[16] Meyers, M.A., O. Vohringer, V.A. Lubarda, The onset of twinning in metals: a constitutive description. Acta Materialia, 2001. 49(19): pp.4025-4039.

DOI: 10.1016/s1359-6454(01)00300-7