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Gamma dash precipitation strengthened platinum group element-added ni-based superalloy designing support program and gamma dash precipitation strengthened plantinum group element-added ni-based superalloy designing support apparatus

a technology of superalloy and precipitation, which is applied in the direction of heat treatment apparatus, instruments, manufacturing tools, etc., can solve the problems of not being applicable to platinum group elements, consuming a tremendous amount of labor and cost, etc., and achieves the effect of facilitating and efficiently performing the structural factor calculation

Inactive Publication Date: 2006-03-16
NAT INST FOR MATERIALS SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0021] As a result, it is capable of easily and efficiently performing the structural factor calculation at working temperature of γ′ precipitation strengthened platinum group element-added Ni-based superalloy and analysis of alloy characteristics such as creep resistant characteristics at working stress, and further the search for a new γ′ precipitation strengthened platinum group element-added Ni-based superalloy which satisfies the required performance.

Problems solved by technology

In order to develop a new alloy having excellent performance, it is necessary to design and manufacture alloys of different composition combining these constituent elements and verify their performance, consuming a tremendous labor and cost.
However, PHACOMP is a technology which judges harmful phase on the basis of quantum theory of electrons and is not intended to develop a new alloy.
DV-Xα cluster method is a method of finding composition of a new alloy by using energy level and covalent bond degree of alloy elements as parameters, but it makes no consideration about structural factors directly relating to the alloy performance such as lattice constant misfit of composition phase and is not applicable to platinum group elements.
However, the apparatus requires the structural factor calculation to be fixed at 900° C. and is not applicable to platinum group elements.

Method used

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  • Gamma dash precipitation strengthened platinum group element-added ni-based superalloy designing support program and gamma dash precipitation strengthened plantinum group element-added ni-based superalloy designing support apparatus
  • Gamma dash precipitation strengthened platinum group element-added ni-based superalloy designing support program and gamma dash precipitation strengthened plantinum group element-added ni-based superalloy designing support apparatus
  • Gamma dash precipitation strengthened platinum group element-added ni-based superalloy designing support program and gamma dash precipitation strengthened plantinum group element-added ni-based superalloy designing support apparatus

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Analysis Embodiment

[0063] Inputting the composition of TMS-138 alloy, the equilibrium state and alloy characteristics in 900° C.−392 MPa and 1100° C.−137 MPa were calculated. FIG. 5 is an example of printed output of the results. Symbols in the diagram are defined as shown in Table 2.

TABLE 2StructuralSymbolfactor or CharacteristicUnitUnit or State(WT %)Alloy compositionwt %—(AT %)Alloy compositionatom %—GPγ′ phase compositionatom %workingtemperature (° C.)Gγ phase compositionatom %workingtemperature (° C.)Fraction. GPγ′ phase volume fractionat amountworkingtemperature (° C.)Lat. GPγ phase lattice constantÅworkingtemperature (° C.)Lat. Gγ phase lattice constantÅworkingtemperature (° C.)Lat. MisfitLattice misfit° C.—LiqLiquidus temperature° C.—Sol1Solidus temperature° C.—Sol2Incipient melting° C.—temperatureSolvComplete solid solution° C.—temperatureWindowComplete solid solution° C.—temperature widthSIsolubility limit index—900° C.DensitySpecific gravityg / cm2roomtemperature (° C.)E...

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Abstract

A novel program for supporting design of a γ′ precipitation strengthened platinum group element-added Ni-based superalloy. To support the design, a computer is allowed to function as input means (1) for inputting the composition, working temperature, and working stress of an Ni-based superalloy, storage means (2) for previously storing the constituent elements of the Ni-based superalloy, the structure factor calculation formula thereof, and the alloy characteristics calculation formula thereof, structure factor calculating means (3) for calculating the structure factor from the alloy composition by using the structure factor calculation formula read from the storage means (2), alloy characteristics calculating means (4) for calculating an alloy characteristics from the alloy composition, the structure factor, the working temperature, and the working stress by using the alloy characteristics calculate formula read out of the storage means (2), and output mean (5) for outputting the structure factor and alloy characteristics together with the alloy composition. Therefore, alloy characteristics analysis and alloy composition search of a γ′ precipitation strengthened platinum group element-added Ni-based superalloy are simply, easily, and efficiently conducted. A design supporting device therefor is also disclosed.

Description

TECHNICAL FIELD [0001] The present invention relates to a γ′ precipitation strengthened platinum group element-added Ni-based superalloy designing support program and a γ′ precipitation strengthened platinum group element-added Ni-based superalloy designing support apparatus. More particularly, the present invention relates to a novel design support program of a γ′ precipitation strengthened platinum group element-added Ni-based superalloy and its design support apparatus which are useful for alloy characteristic analysis and alloy composition search of a γ′ precipitation strengthened Ni-based superalloy with a platinum group element added. BACKGROUND ART [0002] Heretofore, the γ′ precipitation strengthened Ni-based superalloy has been widely used as a heat resistance alloy having excellent high temperature strength in a high temperature member of a heat engine such as a jet engine and a power generation gas turbine. In particular, the γ′ precipitation strengthened Ni-based superall...

Claims

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Application Information

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IPC IPC(8): C22F1/10C22C19/03C22C1/02G06F17/50
CPCC22C1/02C22C19/057C22C19/03G16C20/50
Inventor YOKOKAWA, TADAHARUHARADA, HIROSHIKOIZUMI, YUTAKAKOBAYASHI, TOSHIHARUOSAWA, MAKOTO
Owner NAT INST FOR MATERIALS SCI
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