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Component optimization design method of 617 nickel-based superalloy

A nickel-based superalloy, optimized design technology, applied in the direction of computational theoretical chemistry, chemical property prediction, instruments, etc., can solve the problems of difficult to cover the parameter range, consume manpower, material resources and time, and achieve cost savings and reduce the experimental process. Effect

Pending Publication Date: 2020-09-18
国能锅炉压力容器检验有限公司
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Problems solved by technology

This not only consumes a lot of manpower, material resources and time, but also makes it difficult to cover the entire parameter range

Method used

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  • Component optimization design method of 617 nickel-based superalloy
  • Component optimization design method of 617 nickel-based superalloy
  • Component optimization design method of 617 nickel-based superalloy

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0036] Such as figure 1 As shown, a composition optimization design method for a 617 nickel-based superalloy according to an embodiment of the present invention includes the following steps:

[0037] S1: Based on the chemical composition defined by 617 alloy, the relationship between the precipitation amount and temperature of each phase in 617 alloy with typical chemical composition is calculated by thermodynamic calculation software and phase diagram calculation method, in which, all the th...

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Abstract

The invention discloses a component optimization design method of 617 nickel-based superalloy, comprising the following steps of: calculating the relationship between each precipitation amount in thealloy with a typical chemical composition and the temperature based on the chemical composition defined by the alloy; obtaining main equilibrium phases of the alloy, and simultaneously obtaining the relationship between the precipitation amount of each phase and the temperature; determining main composition phases of the alloy and main alloy elements of each composition phase at the working temperature, and adjusting and optimizing the content of Al, Ti, Cr, Mo and C elements in the alloy to obtain the content of an ideal composition phase; obtaining the value range of the adjusted alloy element components, and finally obtaining the optimized chemical components of the alloy. By the method, a relatively accurate equilibrium phase diagram is obtained, and a theoretical basis is provided forthe design and production of the alloy; more ideal alloy components are obtained; the complicated and time-consuming experimental process is reduced, and a theoretical basis is provided for the design and production of the alloy.

Description

technical field [0001] The invention relates to the technical field of computational design of metal materials, in particular to a composition optimization design method of 617 nickel-based superalloy. Background technique [0002] Nickel-based superalloys have high creep strength and excellent high-temperature oxidation resistance, and are widely used in the field of thermal power, and can be used for backup of boiler superheaters, reheaters, pipes and headers of 700°C ultra-supercritical thermal power units. Choose material. Alloy 617 is a Ni-Cr-Co-Mo nickel-based superalloy mainly solid-solution strengthened. It has high creep strength, excellent high-temperature oxidation resistance and high-temperature stability. It is an ideal s material. [0003] The chemical composition of the material is an important factor in determining the organization. At present, the influence of each alloy element on the microstructure of nickel-based superalloy is mainly studied through ex...

Claims

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Application Information

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IPC IPC(8): G16C20/30G16C10/00C22C19/05C22C30/00C22C32/00
CPCG16C20/30G16C10/00C22C19/055C22C30/00C22C32/0052
Inventor 范力文矫延林郎惠珍李烨陈骞赵月
Owner 国能锅炉压力容器检验有限公司
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