Three rapidly solidified Al–Mg powder alloys have been consolidated by means of cold compaction followed by hot extrusion. The extrusion conditions of temperature, reduction ratio, and ram speed were varied, and it was observed that the mechanical properties of the extrudates were strongly process related. Relationships between properties and the temperature compensated strain rates during extrusion have been established. These alloys have strength/density properties superior to the strongest conventional ingot cast alloys. Good fracture toughness has been recorded in the Al–7 Mg alloy and all three alloys possess good resistance to stress corrosion cracking.
MST/498
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References
1.
TANG. H. and SHEPPARDT.: Powder Metall., 1986, 29, (2), 143.
2.
SHEPPARDT., ZAIDIM. A., and TANG. H.: Met. Sci.,1983, 17, 563.
3.
TANG. H.: PhD thesis, University of London, 1985.
4.
J. 1. JONAS, C. M. SELLARS, and W. J. McG. TEGART: Metall. Rev., 1969, 14, 1.
5.
‘Aluminium standards and data1982’; 1982, Washington DC, The Aluminium Association Inc.
6.
FOIREN. F. and BAURC. L.: Frog. Mater. Sci., 1968, 13, 87.
7.
HATCHJ. E. (ed.): ‘Aluminium—properties and physical metallurgy’, 110; 1984, Metals Park, Ohio, American Society for Metals.
