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Multi-component FeNiCoAlTiZr superelastic alloy and preparation method thereof

A superelastic alloy and multi-component technology, applied in the field of superelastic alloys, to achieve the effect of promoting thermoelastic martensitic transformation, improving strength, and promoting small-angle grain boundaries

Active Publication Date: 2021-11-12
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the superelastic response of iron alloys strengthened by nanoscale γ′ particles is greatly influenced by the β-NiAl(B2) precipitated phase along the grain boundaries

Method used

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  • Multi-component FeNiCoAlTiZr superelastic alloy and preparation method thereof
  • Multi-component FeNiCoAlTiZr superelastic alloy and preparation method thereof
  • Multi-component FeNiCoAlTiZr superelastic alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] Select metallic iron, metallic nickel, metallic cobalt, metallic aluminum, metallic titanium, metallic zirconium, alloy composition is as follows (atom percentage content %): Fe=40.5, Ni=30.0, Co=16.0, Al=10.5, Ti=2.5, Zr = 0.5.

[0025] The preparation method comprises the following steps: carrying out electric arc melting in argon protection, using magnetic stirring technology to mix the metal solution evenly during the melting process, and sucking and casting into alloy alloy rods;

[0026] The ingot is heated to 1100°C, and after holding for 2 hours, it is hot-rolled at this temperature into a thin plate with a thickness of 15mm;

[0027] Air cool to room temperature;

[0028] The rolled plate is subjected to intermediate annealing treatment at 1200°C for 30 minutes, followed by water quenching;

[0029] Cold rolling the sheet to a sheet with a thickness of 2mm at room temperature;

[0030] Then the solid solution treated material was aged at 600°C for 8h, and th...

Embodiment 2

[0032] Select metal iron, metal nickel, metal cobalt, metal aluminum, metal Ti, metal Zr, the alloy composition is as follows (atomic percentage): Fe=40.5, Ni=30.0, Co=16.0, Al=10.5, Ti=2.5, Zr = 0.5.

[0033] The preparation method includes the following steps: arc melting, casting into alloy ingots; melting in argon protection, using magnetic stirring technology to mix the metal solution evenly during the melting process; using protection casting under argon protection, casting into round ingot;

[0034] The ingot is heated to 1100°C, and after holding for 2 hours, it is hot-rolled at this temperature into a thin plate with a thickness of 15mm;

[0035] Air cool to room temperature;

[0036] The rolled plate is subjected to intermediate annealing treatment at 1200°C for 30 minutes, followed by water quenching;

[0037] Cold rolling the sheet to a 2mm thick sheet at room temperature;

[0038] Then the solution treated material was aged at 600°C for 24h, and then water que...

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Abstract

The invention provides a multi-component FeNiCoAlTiZr superelastic alloy and a preparation method thereof. The superelastic alloy contains 30-50at.% of Fe, 25-55at.% of Ni, 10-30at.% of Co, 5-16at.% of Al, 1-8at.% of Ti and 0-15at.% of Zr. The preparation method of the superelastic alloy comprises the processes of homogenization, intermediate annealing, rolling, aging and the like. According to the superelastic alloy, precipitation of a nano precipitated phase is promoted by adding specific elements, heat stagnation is effectively reduced, good superelastic performance is obtained through a unique heat treatment process, and the application prospect is wide.

Description

technical field [0001] The invention relates to a multicomponent FeNiCoAlTiZr superelastic alloy and a preparation method thereof, belonging to the technical field of superelastic alloys. Background technique [0002] Usually, the martensitic phase of Fe-based alloys becomes non-thermoelastic, and such alloys do not possess superelasticity. Austenite deformation, austenite ordering, austenite aging heat treatment and other methods can regulate the martensitic transformation of Fe-based alloys to make them have thermoelastic characteristics, thereby obtaining superelasticity in Fe-based alloys. In recent years, the method of introducing ordered precipitates through austenite aging heat treatment has successfully obtained a variety of iron-based superelastic alloys, such as Fe-Ni-Co-Ti, Fe-Mn-Al-Ni, Fe-Ni-Co -Al-Ta-B etc. At the same time, the alloy also has good mechanical properties and damping properties, low price and excellent processing performance. Due to the above-m...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C33/04C22C38/06C22C38/10C22C38/08C22C38/14C22F1/00C21D6/00C22C1/02C22F1/10C22C19/03
CPCC22C30/00C22C38/06C22C38/105C22C38/14C22C1/02C22C33/04C22F1/00C21D6/001C21D6/007C22F1/10C22C19/03
Inventor 张洋杜康张中武黄涛马亚玺郁永政黄楷岚
Owner HARBIN ENG UNIV
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