Nickel-based alloy, preparation method thereof and manufactured article

Abstract

The invention provides a nickel-based alloy. The nickel-based alloy comprises 10.0 wt% to 30.0 wt% of cobalt, 10 wt% to 20 wt% of chromium, 2.0 wt% to 6.0 wt% of aluminum, 2.0 wt% to 5.0 wt% of titanium, 2.0 wt% to 7.0 wt% of molybdenum, 0.01 wt% to 0.10 wt% of zirconium, 0.01 wt% to 0.10 wt% of carbon, 0.01 wt% to 0.10 wt% of boron, more than 0 wt% and less than 2.0 wt% of scandium, 0 wt% to 3.0wt% of niobium, 0.0 wt% to 4.0 wt% of tantalum, 0 wt% to 5.0 wt% of tungsten, 0 wt% to 1.0 wt% of hafnium, and the balance nickel. The invention also provides a preparation method of the nickel-basedalloy and a manufactured article. According to the nickel-based alloy and the preparation method of the nickel-based alloy, the high-temperature strength and plasticity of the nickel-based alloy are improved by introducing the Sc element, and the nickel-based alloy with super-plastic grain size of the structure is obtained.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a nickel-based alloy, a preparation method thereof and a manufactured article. Background technique [0002] Polycrystalline nickel-based superalloys are currently the most widely used materials for aeroengine turbine disks, compressor air disks and other components. It can be prepared by casting + forging or powder metallurgy. The casting and forging process to prepare superalloys has the advantages of short process and low cost, but with the increase of the types of superalloy alloy elements and the continuous improvement of alloying degree, element segregation caused by this process has become a problem that cannot be ignored; powder metallurgy high temperature The alloy is a high-performance structural material produced by powder metallurgy technology, which solves the problems of serious segregation, uneven structure and performance caused by the improvement of alloying degr...

AI Technical Summary

Problems solved by technology

A lot of research work has shown that transition group metal elements such as Re, Ru, W, Ta and Hf, Ta, Nb and other transition group metal elements are often added elements in nickel-based alloys, and the microalloying design in superalloys is still mainly concentrated In the transition group heavy metal elements and interstitial atoms such as C and B, the research on transition group light rare earth metal elements such as Sc with larger atomic radius in superalloys has not yet been carried out.

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