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A high-strength, high-elasticity, high-plasticity nickel-based superalloy strip and its preparation process

A nickel-based superalloy and a preparation process technology, applied in the field of nickel-based superalloy preparation technology, can solve the problems of high strength, high plasticity and poor performance uniformity, and achieve the effects of improving resource utilization, excellent performance and broad industrial prospects

Active Publication Date: 2022-04-12
BEIJING CISRI GAONA TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the defect that the high-strength, high-elasticity and high-plasticity nickel-based superalloy strip cannot have both high strength and high plasticity and poor performance uniformity, the application provides a high-strength, high-elasticity and high-plasticity nickel-based superalloy strip and its preparation process

Method used

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  • A high-strength, high-elasticity, high-plasticity nickel-based superalloy strip and its preparation process
  • A high-strength, high-elasticity, high-plasticity nickel-based superalloy strip and its preparation process
  • A high-strength, high-elasticity, high-plasticity nickel-based superalloy strip and its preparation process

Examples

Experimental program
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Effect test

Embodiment 1

[0049] In this embodiment, GH4578 alloy is used as raw material.

[0050] The preparation process of a high-strength, high-elasticity and high-plasticity nickel-based superalloy strip provided in this embodiment includes the following steps: preparing a strip blank:

[0051] Alloy ingot smelting: Vacuum induction and electroslag remelting are used to complete alloy ingot smelting, and electroslag ingots with a diameter of 120mm are obtained; homogenization treatment: homogenization treatment is performed on alloy ingots, and the homogenization treatment time is 1180°C. The time is 40h for the initial mechanical grinding of the alloy ingot after the homogenization treatment;

[0052] Forging slab: Forging slab for the ingot after the initial mechanical grinding, and performing secondary mechanical grinding and initial edge wire cutting on the slab after forging slab, to obtain the slab required for hot rolling, with a thickness of 40mm;

[0053] Multi-fire hot rolling of slab...

Embodiment 2

[0081] The tensile strength of the finished strip in embodiment 2 is 1530MPa, the yield strength is 1354MPa, and the elongation is 15.0%. As can be seen, the finished strip has higher strength and lower elongation. Although the finished strip has good strength, its plasticity Poor, unable to meet the requirements of the finished strip for strength and plasticity at the same time; the tensile strength of the finished strip in Example 3 is 1298MPa, the yield strength is 1094MPa, and the elongation is 32.0%. The rate is high, and the finished strip has good plasticity, but the strength is low.

[0082] Contrasting Example 1 with Examples 2-3 shows that the comprehensive mechanical properties of the finished strip in Example 1 are better than those of Example 2-3, indicating that the continuous annealing temperature affects the comprehensive mechanical properties of the finished strip, the continuous annealing temperature is low, and the crystal The grain structure is fine, the st...

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Abstract

The application relates to the technical field of nickel-based superalloy preparation technology, and specifically discloses a high-strength, high-elasticity and high-plasticity nickel-based superalloy strip and its preparation technology. The preparation process includes the following steps: preparing a strip; primary cold rolling: performing a cold rolling on the strip; water-cooling annealing: performing water-cooling annealing on the strip after the primary cold rolling; Secondary cold rolling; continuous annealing: the strip after secondary cold rolling is subjected to continuous annealing treatment; three times cold rolling: the strip after continuous annealing is subjected to three cold rolling to obtain finished strip. The nickel-based superalloy strip produced by the preparation process of this application has excellent grain size, good matching of the number of γ′ strengthening phases, good uniform structure and performance, and has both high strength and high plasticity; the preparation process is simple and has significant promotion Value.

Description

technical field [0001] This application relates to the technical field of nickel-based superalloy preparation technology, more specifically, it relates to a high-strength, high-elasticity and high-plasticity nickel-based superalloy strip and its preparation process. Background technique [0002] High-strength, high-elasticity and high-plasticity nickel-based superalloys are divided into solid-solution-strengthened superalloys and precipitation-hardening superalloys according to the strengthening method. A large amount of Al, Ti and other elements are added to the precipitation-hardening superalloy to form a γ′ aging strengthening phase. Adding W Solid solution strengthening with Co and other elements, adding B, Ce and Mg and other elements for grain boundary strengthening. [0003] When high-strength, high-elasticity and high-plasticity nickel-based precipitation-hardening superalloy strips are used to make some special elastic components such as coil springs, not only the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/10C21D8/02
CPCC22F1/10C21D8/0226C21D8/0236C21D8/0247
Inventor 石照夏颜晓峰段春华鞠泉胥国华韩光炜张世霄
Owner BEIJING CISRI GAONA TECH
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