发明名称 |
METHOD OF HEAT TREATMENT OF ALLOYS BASED ON ALLOYED INTERMETALLIC Ni<SB>3</SB>Al |
摘要 |
FIELD: metallurgy, manufacture of especially loaded parts with directionally crystallized and monocrystalline structure from heat-proof materials of new class based on intermetallic. SUBSTANCE: patented method of heat treatment of alloys based on alloyed intermetallic Ni<SB>3</SB>Al includes annealing at temperature 1180- 1220 C in the course of 4.0-8.0 h, cooling in air, annealing at temperature 900-1100 C in the course of 20.0-30.0 h, cooling in air and annealing at temperature 480-520 C in the course of 40.0-60.0 h followed by cooling in air. Given method ensures increased impact elasticity and heat resistance at temperatures above 1000 C with conservation of complex of physical and mechanical properties within temperature interval from 20 to 1000 C which makes it possible to prolong service life and reliability of high- temperature parts such as nozzle guide vanes, screens of combustion chambers and so on in hot passages of gas-turbine engines by 4.5-5.0 times. EFFECT: prolonged service life and reliability of high-temperature parts in hot passages of gas-turbine engines. 3 tblg
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申请公布号 |
RU2123064(C1) |
申请公布日期 |
1998.12.10 |
申请号 |
RU19970111936 |
申请日期 |
1997.07.10 |
申请人 |
INSTITUT METALLURGII IM. A.A.BAJKOVA RAN |
发明人 |
BUNTUSHKIN V.P.;POVAROVA K.B.;SHIPOVA G.N.;KAZANSKAJA N.K. |
分类号 |
C22F1/10;(IPC1-7):C22F1/10 |
主分类号 |
C22F1/10 |
代理机构 |
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主权项 |
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地址 |
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