Hostname: page-component-7b7567c8c-tnzcf Total loading time: 0 Render date: 2026-11-15T00:20:28.748Z Has data issue: false hasContentIssue false
  • English
  • Français

Microstructures and Mechanical Properties of NiAl-Mo Composites

Published online by Cambridge University Press:  26 February 2011

H. Bei and
E. P. George
H. Bei
Affiliation:
The University of Tennessee, Department of Materials Science and Engineering, Knoxville, TN 37996Oak Ridge National Laboratory, Metals and Ceramics Division, Oak Ridge, TN 37831
E. P. George
Affiliation:
The University of Tennessee, Department of Materials Science and Engineering, Knoxville, TN 37996Oak Ridge National Laboratory, Metals and Ceramics Division, Oak Ridge, TN 37831
Get access

Abstract

In-situ composites consisting of ∼14 vol.% continuous Mo fibers embedded in a NiAl matrix were produced by directional solidification in a xenon-arc-lamp, floating-zone furnace. The fiber spacing and size were controlled in the range 1–2 μm and 400–800 nm, respectively, by varying the growth rate between 80 and 20 mm/h. Electron back-scatter diffraction patterns from the constituent phases revealed that the growth directions and interface boundaries exhibited the following orientation relationships: 〈l00〉NiAl //〈100〉Mo and {011}NiAl //{011}Mo . The temperature dependence of the tensile strength and ductility were investigated and the NiAl-Mo composite was found to be both stronger and have a lower ductile-brittle transition temperature than the unreinforced NiAl matrix.

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.)

Article purchase

Temporarily unavailable

References

REFERENCES

[1] Misra, A, Wu, ZL, Kush, MT, Gibala, R, Materials Science and Engineering A 1997; 239–240: 75.Google Scholar
[2] Subramanian, PR, Mendiratta, MG, Miracle, DB, Metallurgical and Materials Transactions A 1994; 25: 2769.Google Scholar
[3] Joslin, SM, Chen, XF, Oliver, BF, Noebe, RD, Materials Science and Engineering A 1995; 196: 9.Google Scholar
[4] Johnson, DR, Chen, XF, Oliver, BF, Noebe, RD, Whittenberger, JD, Intermetallics 1995; 3; 99.Google Scholar
[5] Cline, HE, Walter, JL, Lifshin, E, Russell, RR, Metallurgical Transactions 1971; 2: 189.Google Scholar
[6] Subramanian, R, Mendiratta, MG, Miracle, DB, Dimiduk, DM, In: Anton, DL, Martin, PL, Miracle, DB, McMeeking, R, editors. Intermetallic Matrix Composites. Pittsburgh: Materials Research Society 1990. p. 147.Google Scholar
[7] Frommeyer, G, Rahlbauer, R, In: George, EP, Inui, H, Mills, MJ, Eggeler, G, editors. Defect Properties and Related Phenomena in Intermetallic Alloys. Warrendale: Materials Research Society 2003. p. 193.Google Scholar
[8] Milenkovic, S, Caram, R, Mater. Lett. 2002; 55: 126.Google Scholar
[9] Milenkovic, S, Coelho, AA, Caram, R, J Cryst. Growth 2000; 211: 485.Google Scholar
[10] Walter, JL, Cline, HE, Metall. Trans. 1970; 1: 1221 Google Scholar
[11] Misra, A, Wu, ZL, Kush, MT, Gibala, R, Philos. Mag. A 1998; 78: 533.Google Scholar
[12] Chang, KM, Darolia, R, Lipsitt, HA, Acta Metall. Mater. 1992; 40 2722.Google Scholar
[13] Bei, H, George, EP, Kenik, EA, Pharr, GM, Acta Metall. 2003; 51: 6241.Google Scholar
[14] Bei, H, George, EP, Pharr, G.M. Intermetallics 2003; 11: 283 Google Scholar
[15] Bei, H, George, EP, Kenik, EA, Pharr, GM, Metallkunde, Z. 2004: in press.Google Scholar
[16] George, EP, Bei, H, Serin, K, Pharr, GM, Mater. Sci. Forum 2003; 426–432: 4579.Google Scholar
[17] Bei, H, George, EP, Acta Mater. 2005; 53: 69.Google Scholar
[18] Villars, P, Calvert, LD, “Pearson's Handbook of Crystallographic Data for Intermetallic Phases”, American Society for Metals, Metals Park, 1985.Google Scholar
[19] Jackson, KA, Hunt, J.D. Trans. Metall. Soc. AIME 1966; 236: 1129.Google Scholar