Hostname: page-component-848d4c4894-8bljj Total loading time: 0 Render date: 2024-07-06T09:03:00.985Z Has data issue: false hasContentIssue false
  • English
  • Français

Joining of NiAl to Nickel-Base Alloys by Transient Liquid Phase Bonding

Published online by Cambridge University Press:  10 February 2011

Z. A. M. Abdo ,
Y. Guan  and
W. F. Gale
Z. A. M. Abdo
Affiliation:
Materials Research and Education Center Auburn University201 Ross Hall, Auburn, AL 36849, USA
Y. Guan
Affiliation:
Materials Research and Education Center Auburn University201 Ross Hall, Auburn, AL 36849, USA
W. F. Gale
Affiliation:
Materials Research and Education Center Auburn University201 Ross Hall, Auburn, AL 36849, USA
Get access

Abstract

A transmission and scanning electron microscope investigation is undertaken to study microstructural development during transient liquid phase (TLP) bonding of NiA1 to Ni-base substrates. The bonds were produced through a conventional technique employing a Cu foil interlayer or a widegap technique using a composite preform containing powders of NiAl and Cu. The time required for completion of isothermal solidification was greatly reduced in wide-gap bonds as compared to conventional bonds. Microstructural features of conventional TLP bonds of polycrystalline-NiAl/Ni were controlled by the ratio of Al: Cu across the joint. The precipitation of the a phase encountered in polycrystalline- NiAl/Martin Marietta 247 superalloy (MM247) bonds was suppressed in wide-gap bonds of single crystal-NiAl(Hf) and MM247. In general, the extent of second phase precipitation, in the asbonded condition, was greatly reduced by the use of the wide-gap technique. However, extensive precipitation of HfC and W-rich phases was observed after post-bond heat treatments.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 552: Symposium KK – High-Temperature Ordered Intermetallic Alloys VIII , 1998 , KK9.4.1
Copyright
Copyright © Materials Research Society 1999

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

REFERENCES

1. Duall, D.S., Owczarski, W.A., and Paulonis, D.E, Weld. J., 53, 203–214 (1974).Google Scholar
2. Zhou, Y., Gale, W.F., and North, T. H., Int. Mater. Rev., 40, 181–196 (1995).Google Scholar
3. Strum, M.J., and Henshall, H.A., Advanced Joining Technologies for New Materials II, edited by Flore, N.E and Stiegler, J.O., AWS, Miami, FL, 76–88 (1994).Google Scholar
4. Moore, T.J., and Kalinowski, J.M., Mater. Res. Soc. Symp. Proc., 288, 1173–1178 (1993).CrossRefGoogle Scholar
5. Gale, W.F., and Orel, S. V., J. Mater. Sci., 31, 345–349 (1996).CrossRefGoogle Scholar
6. Sheward, G., High Temperature Brazing in Controlled Atmospheres, Pergamon Press, Elmsford, New York, NY, (1985).Google Scholar
7. Ternary alloys, A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagrams, edited by Petzow, G. and Effenberg, G., VCH publishing, New York, NY, (1991).Google Scholar
8. Gale, W.F., and Guan, Y., Metall. Mater. Trans. A., 27, 3621–3629 (1996).CrossRefGoogle Scholar
9. Gale, W.F., and Guan, Y., J. Mater. Sci., Accepted for publication.Google Scholar
10. Gale, W.F., and Guan, Y., Mater. Sci. Technol, Accepted for publication.Google Scholar
11. Jia, C.C., Ishida, K., and Nishiazwa, T., Metall. Mater. Trans. A, 25, 473–484 (1994).Google Scholar
12. Gale, W.F., and King, J.E., Metall. Trans. A, 23A, 2657–2665 (1992).Google Scholar
13. Guan, Y., and Gale, W.F., Microst. Sci., 25, 303–310 (1998).Google Scholar
14. Yang, R., Leake, J. A.,. and Cahn, R.W., Phil. Mag. A, 65, 961–980 (1992).CrossRefGoogle Scholar
15. Gale, W.F., Intermettalics, 4, 585–587 (1996).Google Scholar
16. Gale, W.F., and Abdo, Z.A.M., J. Mater. Sci, 33, 2299–1304, (1998).Google Scholar
17. Kainuma, R., Ohtani, H., and Ishida, K., Metall. Mater. Trans. A, 27, 2445–2453 (1996).CrossRefGoogle Scholar
18. Turkdogan, E.T., Physical Chemistry of High Temperature Technology, Academic Press, New York, NY, 23 (1972).Google Scholar
19. Ross, W., and Sims, C. T., Superalloys II: High-Temperature Materials For Aerospace and Industrial Power, Sims, C.T., Stoloff, N.S. and Hagel, W.C.. et al. eds., John Wiley & Sons Ltd., 97–133 (1987).Google Scholar