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A kind of preparation method of nickel-manganese-gallium alloy with superplasticity

A technology of nickel-manganese-gallium and superplasticity, which is applied in the field of nickel-manganese-gallium alloy preparation, can solve the problems of high deformation resistance and difficulty in forming nickel-manganese-gallium alloys, and achieve the effects of improving forming efficiency, good application prospects, and reducing forming costs

Active Publication Date: 2016-03-02
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problems of difficult forming and high deformation resistance of existing nickel-manganese-gallium alloys, and provides a method for preparing nickel-manganese-gallium alloys with superplasticity

Method used

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  • A kind of preparation method of nickel-manganese-gallium alloy with superplasticity
  • A kind of preparation method of nickel-manganese-gallium alloy with superplasticity
  • A kind of preparation method of nickel-manganese-gallium alloy with superplasticity

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specific Embodiment approach 1

[0016] Embodiment 1: The preparation method of a superplastic nickel-manganese-gallium alloy described in this embodiment is specifically carried out according to the following steps:

[0017] 1. Preparation of nickel-manganese-gallium alloy: firstly weigh pure nickel, pure manganese and pure gallium according to the atomic percentage of 45% to 55% nickel, 25% to 35% manganese and 15% to 25% gallium, and then use vacuum induction melting method Preparation of nickel-manganese-gallium alloys with a diameter greater than 150 mm and a height greater than 100 mm;

[0018] 2. Homogenization heat treatment: use electric spark to cut the nickel-manganese-gallium alloy prepared in step 1 into a cylindrical blank with a diameter of 60mm-150mm and a height of 40mm-100mm, then place the cylindrical blank in acetone and clean it under the action of ultrasonic waves 15min to 30min, then put the cleaned cylindrical blank in an oven at a temperature of 80°C to 120°C for drying, and finally p...

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that the sheathing material described in step 3 is a metal material with low yield strength at high temperature and good plasticity. . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the sheathing material is low carbon steel, stainless steel or brass. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method for a nickel-manganese-gallium alloy with superplasticity, relates to the preparation method for the nickel-manganese-gallium alloy, and aims to solve the problems that an existing nickel-manganese-gallium alloy is difficult to deform and great in deformation resistance. The preparation method comprises the following steps: preparing the nickel-manganese-gallium alloy; performing homogenizing treatment and hot extrusion; removing a sheath and cleaning to obtain the nickel-manganese-gallium alloy with the superplasticity. The preparation method has the advantages that the nickel-manganese-gallium alloy can be formed at higher strain rate and high temperature, so the forming efficiency is improved, and the forming cost is reduced; the possibility that complex parts are prepared from the nickel-manganese-gallium alloy under the high-temperature condition is realized; the preparation method has good application prospect in the preparation of morphological sections such as nickel-manganese-gallium alloy plates, bars, silks, tubes and the like and is used for preparing the nickel-manganese-gallium alloy with the superplasticity.

Description

technical field [0001] The invention relates to a preparation method of nickel-manganese-gallium alloy. Background technique [0002] Nickel-manganese-gallium alloy is an emerging smart material. It not only has the shape memory and superelastic deformation properties of traditional shape memory alloys, but also can output large strain under the action of a magnetic field because of its ferromagnetism. Compared with magnetostrictive materials, the output strain is larger under the action of a magnetic field, while maintaining the advantages of high response frequency of magnetostrictive materials. Nickel-manganese-gallium alloy is a ferromagnetic shape memory alloy. As a driving and sensing material, it has good application prospects in aerospace, machinery, electronics and other fields. [0003] The application of this material requires that it has good formability in order to prepare the required part shape. However, nickel-manganese-gallium alloy belongs to an intermeta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C19/03C22C30/00
Inventor 张学习魏陇沙耿林
Owner HARBIN INST OF TECH
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