| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: invention relates to machine building, particularly to machining parts from refractory nickel alloys operated at -253C to +900C.Proposed method comprises isothermal deformation of part in two passes. At first step, billets are deformed at 0.5-0.7 Tm at deformation rate ¡ from 2ù10-3 s-1 to 10ù10-3 s-1 and deformation degree of 20 to 90%, while, at second step, billets are deformed at 0.5-0.7 Tm at deformation rate ¡ from 2ù10-3 s-1 to 10ù10-3 s-1 and deformation degree of 20-90%. After every pass, billets are cooled down from deformation temperature to 500-600C and, then, in air. ^ EFFECT: decreased probability of crack formation, higher strength and durability, longer life. ^ 2 cl |
