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2 296 178

(13)

(51)

IPC

C22F1/10(2006-01-01)

(21) (22)

Application

2005129379/02, 2005-09-20

(24)

Start date

2005-09-20

(22)

Actual filing date

2005-09-20

(45)

Published

2007-03-27

(72)

Inventor

Kositsyn Sergej VladimirovichKositsyna Irina IgorevnaValiullin Andrej IldarovichKataeva Natal'Ja Vadimovna

(73)

Holder

Institut Fiziki Metallov Uro Ran

NICKEL MONOALUMINIDE BASE ALLOY WITH HIGH TEMPERATURE SHAPE MEMORY EFFECT HEAT TREATMENT METHOD Russian patent published in 2007 - IPC C22F1/10

Abstract RU 2296178 C1

FIELD: metallurgy, namely heat treatment of intermetallide alloys with thermo-elastic martensite conversion, possibly production of materials with high-temperature memory shape memory effect.

SUBSTANCE: method for heat treatment of nickel mono-aluminide base alloy with high-temperature shape memory effect comprises steps of homogenization annealing at temperature 1200 - 1350°C and martensite quenching realized by crystallization from melt at cooling rate 10⁴- 10⁶°/s. After martensite quenching, rapid heating is performed in addition at rate more than 1°/s till temperature 400 - 500°C and also isothermal soaking for 30 - 360 min and cooling till 20°C at rate no less than 1°/s are performed. Invention provides improved thermal stability of alloy in temperature range 250 - 350°C.

EFFECT: increased ductility and thermal stability of alloy.

2 cl, 1 dwg

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RU 2 296 178 C1

Authors

Kositsyn Sergej Vladimirovich

Kositsyna Irina Igorevna

Valiullin Andrej Ildarovich

Kataeva Natal'Ja Vadimovna

Dates

2007-03-27—Published

2005-09-20—Filed