The diffusion bonding of 2124 aluminium alloy reinforced with particulate silicon carbide has been investigated. The shear strength of the bonded composite decreased with increasing volume fraction of particulate Vp owing to the reduced area of metal to metal contact across the joint, from 60 MN m−2 for Vp=0·25 to 35 MN m−2 for Vp=0·40. The use of an interlayer of 2124 alloy increased the area of metal to metal contact to give improved bond strength. Microstructural characterisation of the bonds showed that the magnesium present in the 2124 alloy was a crucial factor in forming a joint, since it disrupted the surface oxide to allow metal interdiffusion.
MST/3189
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References
1.
MADDRELLE. R., RICKSR. A., and WALLACHE. R.: in ‘Aluminium-lithium alloys V’, (ed. SandersT. H. and StarkeE. A.), Vol. 1, 451-460; 1989, Warrendale, PA, TMS-AIME.
2.
DUNFORDD. V. and PARTRIDGER G.: J. Mater. Sci.,1990, 25, 4957.
3.
BUSHEYR. S. and scorrv. D.: Mater. Sci. Technol.,1993, 9, (5), 417.
4.
POLMEARI. J.: ‘Light alloys: metallurgy of the light metals’, 2 edn, 22-32; 1989, London, Edward Arnold.
5.
FONDAR. W., CASSADAW. A., and SHIFLETG. J.: Acta Metall. Mater.,1992, 40, (10), 2539.
6.
CANTALEJOSN. A. and CUSMINSKYG.: J. Inst. Met.,1972, 100, 20.
7.
FIELDD. J., SCAMENSG. M., and BUTLERE. P.: in Proc. Conf. on ‘Environmental degradation of engineering materials’, Blacksburg, VA, September 1981, Virginia Polytechnic Institute, pp. 393-405.
8.
RITCHIEI. M., SANDERSJ. V., and VVEICKHARDTP. L.: Oxid. Met.,1971, 3, (1), 91.
9.
FIELDD. J.: in ‘Aluminium alloys - contemporary research and applications’, (ed. VasudevanA. K. and DohertyR. D.), Vol. 31, 523-537; 1989, London, Academic Press.
10.
DERBYB. and WALLACHE. R.: J. Mater. Sci.,1984, 19, 3149.
11.
DIETERG. E.: ‘Mechanical metallurgy’, 479–483; 1961, New York, McGraw-Hill.
12.
TABATAT., MASAKIS., and AZEKURAK.: Mater. Sci. Technol.,1989, 5, (4), 377.
13.
PARTRIDGEP. G. and DUNFORDD. V.: J. Mater. Sci.,1991, 26, 2255.
14.
PARTRIDGEP. G., SHEPHERDM., and DUNFORDD. V.: J. Mater. Sci.,1991, 26, 4953.
