Precipitation hardening of superalloys by ordered γ′-particles

The physical and mechanical metallurgy of Ni3Al and its alloys is reviewed Emphasis is on developments within the past five years, a period of extremely rapid growth in research on the behaviour of this unusually interesting intermetallic compound This review is particularly concerned with solute effects on properties such as diffusion rates, ductility, fatigue resistance, and environmental stability, subjects that only recently have received much attention Novel processing techniques, including rapid solidification and powder processing, are shown to have played a key role in providing Ni3Al-base alloys with improved properties An assessment of needed areas of research to hasten commercial applications of Ni3Al alloys concludes the review

Physical and mechanical metallurgy of Ni3Al and its alloys

Lattice parameters of Ni(γ), Ni3Al(γ') and Ni3Ga(γ') solid solutions with additions of transition and B-subgroup elements

The order-disorder transformation in Ni3Al and Ni3AlFe alloys—I. Determination of the transition temperatures and their relation to ductility

Mesure de la contrainte d'ecoulement et du module de Young pour des alliages binaires a base de nickel a 77 K. Determination de la vitesse de durcissement et de la vitesse de variation dans les constantes d'elasticite. Interpretation du durcissement par solution par la theorie des interactions elastiques. Comparaison avec le durcissement par solution solide de l'alliage Ni 3 Al

Shouichi Ochial

Papers

Alloying behaviour of Ni3Al, Ni3Ga, Ni3Si and Ni3Ge