Effect of prolonged loading on the structure and properties of alloy KhN77TYu

Conclusions When alloy KhN77TYu is subjected to preliminary creep dispersed particles of phase appear in the structure, and consequently plastic deformation occurs by cutting of the particles by dislocations, with formation of stable stacking faults, which are retained during subsequent aging and strengthen the structure. After long-term strength tests the structure contains dislocation loops evenly distributed through the grains, with no coplanar distribution of dislocations in grain boundaries. All these changes in the fine structure lead to an increase of the service life of alloy KhN77TYu.Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 68–69, November, 1974.     

Effect of heat treatment on the structure and properties of sheets from alloy KhN56VMTYu

Results of a study of the effect of various regimes of heat treatment on the structure and mechanical properties of sheets from intensely aging nickel alloy KhN56VMTYu used for force parts of gas turbine engines (GTE) are presented.     

Effect of the aging regime on the hardness and amount of γ-phase in high-temperature nickel alloys KhN56VMTYu and KhN77TYuR

It is known that the properties of high-temperature nickel alloys depend considerably on the amount of γ'-phase, which is determined, first of all, by the aging, regime. In order to evaluate the properties of these alloys it is expedient to establish the relation between the parameters of the aging regime and the amount of γ'-phase or, which is even more important, between the aging parameters and the mechanical properties. The present paper concerns high-temperature nickel alloys KhN56VMTYu and KhN77TYuR, which are used to establish the relations between the amount of γ'-phase, the hardness, and its increment due to aging and the aging temperature. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 27–30, November, 1997.