Central Iron and Steel Research Institute

Gaona Aero Material Co., Ltd.

Zhongnan Bi

Jiantao Liu

Peng Wang

Rui Wang

Lei Zhao

Tian Xia

Ming Zhang

Haizhou Wang

Yunhai Jia

Xuejing Shen

Dongling Li

Xing Yu

Guang Feng

Shaoming Zhang

Mingdong Liu

Hailong Qin

Jinhui Du

Bin Gan

Jinglong Qu

Shoubo Han

Guangbao Sun

Huiping Ma

Hongyao Yu

The present disclosure relates to the technical field of nickel-based superalloys, and in particular to a nickel-based superalloy and preparation method therefor, and a structural component. The alloy includes the following components in mass percentage: Co 17%-22%, Cr 9%-13%, Ta 2.95%-3.95%, Al 2.5%-3.5%, Ti 2.5%-3.5%, W 2.1%-3.5%, Mo 2.1%-3.5%, Nb 1.65%-1.95%, Hf 0.2%-0.7%, C 0.03%-0.08%, B 0.01%-0.06%, Zr 0.03%-0.07% and Ni. The nickel-based superalloys of the present disclosure, in the creep process at 780° C., produces specific Suzuki atmosphere in certain positions, and locks dislocations to improve creep resistance, such that the operating temperature can be raised to more than 780° C., which meets the requirements on the materials for the advanced aero-engines.

Nickel-based superalloy and preparation method therefor, and structural component

The invention relates to a full-field statistical & characterizing method of fluid micro-explored strain for alloy microstructure, comprising the following steps: a. grinding and polishing the surface of an alloy sample to mirror with no grinding defects, and then determining a to-be-measured area on the surface of the alloy sample; b. utilizing a white light interferometry 3D surface profiler to perform initial morphology measurement on the surface of an alloy sample; c. utilizing an isostatic pressing technology to obtain the microstructure deformation on the surface of the alloy sample, and then utilizing a white light interferometry 3D surface profiler to perform deformed morphology measurement on the surface of the alloy sample to obtain a changing spectrum of micro morphology of the microstructures on the surface of the alloy; and d. performing trans-scale and rapid quantitative statistical distribution characterization on the morphology change before and after isostatic pressing of the microstructures in the to-be-measured area of the alloy, so as to obtain a corresponding full-field metallography. In the present invention, the sample pretreatment is simple, the analysis speed is rapid, the scanning area is large, and the requirement of high throughput trans-scale analysis can be satisfied, so as to instruct the extraction of the material metallography feature unit.

Full-field statistical and characterizing method of fluid micro-explored strain for alloy microstructure

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Beijing, China

Zhongnan Bi