Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-17T19:22:22.123Z Has data issue: false hasContentIssue false
  • English
  • Français

Slip Transfer across Hetero-Interfaces in two-phase Titanium Aluminum Intermetallics

Published online by Cambridge University Press:  15 March 2011

Jörg M.K. Wiezorek ,
Xiao-Dong Zhang  and
Hamish. L. Fraser
Jörg M.K. Wiezorek
Affiliation:
Department of Materials Science and Engineering, University of Pittsburgh, Pittsburgh, PA
Xiao-Dong Zhang
Affiliation:
Center for Materials Science, Bose Corporation, Framingham, MA
Hamish. L. Fraser
Affiliation:
Department of Materials Science & Engineering, The Ohio State University, Columbus, OH
Get access

Abstract

The role of slip transfer processes across the heterophase interfaces in two-phase TiAl intermetallics has been studied. Polysynthetically twinned crystals of TiAl (PST-TiAl) have been used as model systems for individual grains in technologically relevant polycrystalline lamellar TiAl alloys. Compressive plastic loads have been applied for orientations of the lamellar interfaces parallel and perpendicular to the loading directions to produce hard mode slip activity. Transmission electron microscopy has been used to determine the active deformation modes in the constituent phases and to study the slip transfer across heterophase interfaces. The results are discussed with respect to the mechanical behavior of PST-TiAl and lamellar TiAl alloys, which is of relevance to in-service performance and metallurgical processing operations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 821: Symposium P – Nanoscale Materials & Modeling-Relations Among Processing, Microstructure and Mechanical Properties , 2004 , P4.5/N4.5
Copyright
Copyright © Materials Research Society 2004

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

[1] Kim, Y. W., Acta metall. 42, 1221 (1992).Google Scholar
[2] Fujiwara, T. et al. , Phil. Mag. A 61, 591 (1990).Google Scholar
[3] Minonishi, Y. and Yoo, M.H., Phil. Mag. Lett. 61, 203 (1990).Google Scholar
[4] Umakoshi, Y. et al. , Acta metall mater. 41, 1144 (1993).Google Scholar
[5] Inui, H., Toda, Y. and Yamaguchi, M., Phil. Mag A 67, 1315 (1993).Google Scholar
[6] Inui, H., Toda, Y., Shirai, Y and Yamaguchi, M., Phil. Mag A 69, 1161 (1994).Google Scholar
[7] Legros, M., Minoninshi, Y. and Caillard, D. Phil. Mag. A. 76, 1013 (1997).Google Scholar
[8] Umakoshi, Y. and Nakano, T., Acta metall. mater. 41, 1155 (1993).Google Scholar
[9] Hazzledine, P.M. and Kad, B.K., Mat. Sci. Eng A 95, 340 (1995).Google Scholar
[10] Kad, B.K., Hazzledine, P.M. and Fraser, H.L., MRS Symp Proc 288, 495 (1993).Google Scholar
[11] Wiezorek, J.M.K., Zhang, X.D., Clark, W.A.T. and Fraser, H.L., Phil. Mag. A 78, 217 (1998).Google Scholar
[12] Wiezorek, J.M.K., Zhang, X.D. and Fraser, H.L., Structural Intermetallics II, (TMS, Warrendale, 1997) p. 195.Google Scholar
[13] Kishida, K., Inui, H. and Yamaguchi, M., Phil Mag. A 78, 1 (1998).Google Scholar
[14] Wiezorek, J.M.K., Zhang, X.D. and Fraser, H.L., MRS Symp Proc 578, 383 (2000).Google Scholar
[15] Hu, D. and Loretto, M.H., Intermetallics 7, 1299 (1999).Google Scholar
[16] Gibson, M.A. and Forwood, C.T, Phil. Mag A 80, 2747 (2000).Google Scholar
[17] Gibson, M.A. and Forwood, C.T, Phil. Mag A 82, 1381 (2002).Google Scholar
[18] Zghal, S. and Couret, A., Phil. Mag A 81, 365 (2001).Google Scholar
[19] Zghal, S. and Couret, A., Phil. Mag A 81, 345 (2001).Google Scholar
[20] Wiezorek, J.M.K., Godfrey, A., Zhang, X.D., Hu, D., Loretto, M.H. and Fraser, H.L., Scripta mater. 38, 811 (1998).Google Scholar
[21] Godfrey, A., Hu, D. and Loretto, M.H., Phil. Mag. A 77, 287 (1998).Google Scholar
[22] Gibson, M.A. and Forwood, C.T, Phil. Mag A 80, 2785 (2000).Google Scholar
[23] Shen, Z., Wagoner, R.H. and Clark, W.A.T., Acta metall. mater. 36, 3231 (1988)Google Scholar
[24] Clark, W.A.T., Wagoner, R.H., Shen, Z.Y., Lee, T.C., Robertson, I.M. and Birnbaum, H.K., Scripta metall. mater. 26, 203 (1992).Google Scholar
[25] Kishida, K., Yoshikawa, J., Inui, H. and Yamaguchi, M., Acta mater. 47, 3405 (1999).Google Scholar
[26] Gupta, A. and Wiezorek, J.M.K., Intermetallics 11, 598 (2003).Google Scholar