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Preparation method of high-strength and high-damping FeCrMoCu alloy

A high-damping, high-strength technology, applied in the field of damping alloys, can solve the problem of the strength level to be improved, and achieve the effect of high strength

Inactive Publication Date: 2018-04-27
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a high-strength, high-damping FeCrMoCu alloy to solve the problem that the strength level of the existing FeCrMoCu alloy needs to be improved

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  • Preparation method of high-strength and high-damping FeCrMoCu alloy
  • Preparation method of high-strength and high-damping FeCrMoCu alloy
  • Preparation method of high-strength and high-damping FeCrMoCu alloy

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[0019] In a specific embodiment, the composition (mass percentage) of the high-strength, high-damping FeCrMoCu alloy is to add 1.0% Cu to the Fe-16Cr-2.5Mo alloy, that is, the Fe-16Cr-2.5Mo-1.0Cu alloy, which The preparation process is: vacuum induction furnace smelting→forging→hot rolling→annealing heat treatment→aging treatment. According to the alloy composition ratio, industrial pure iron and 99.9wt.% high-purity metal Cr, Mo, and Cu metals are used as raw materials, and the alloy is smelted in a vacuum induction furnace. The actual composition of the Fe-16Cr-2.5Mo-1.0Cu alloy in the example For: Cr 15.92, Mo 2.52, Cu 1.01, C 0.006, S 0.002, P 0.006, O 0.0025, N 0.0028, Fe balance. After casting and forging, it is hot-rolled into plates, and then high-temperature annealing and aging treatment are adopted. The specific processing technology and heat treatment system are as follows: Forging and hot-rolling forming technology are used to reduce the defects such as porosity, p...

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Abstract

The invention relates to the field of damping alloy and particularly relates to a preparation method of high-strength and high-damping FeCrMoCu alloy. The preparation method comprises the following steps: smelting by adopting a vacuum induction furnace, and performing forging, hot rolling formation to obtain a uniform matrix structure; performing high-temperature annealing treatment on a hot-rolled plate, eliminating internal stress of the alloy and reducing dislocation density so as to obtain high-damping performance, and afterwards cooling in air to reach a room temperature, wherein the annealing temperature is 900 to 1100 DEG C, and the temperature is maintained for 0.5 -2 hours; subsequently performing aging heat treatment on the annealed alloy at the temperature of 450 to 700 DEG C, maintaining the temperature for 0.5-4 hours, and afterwards performing water cooling treatment. The high-strength and high-damping FeCrMoCu alloy prepared by the method provided by the invention is excellent in comprehensive performances, reaches a relatively high level in strength on the premise of having a certain damping performance, overcomes the problem about low strength of FeCrMo and annealed FeCrMoCu alloy, and contributes to popularization and application of the alloy.

Description

Technical field: [0001] The invention relates to the field of damping alloys, in particular to a method for preparing a high-strength, high-damping FeCrMoCu alloy. Background technique: [0002] With the progress of society and the high development of industry, the problems of vibration and noise have attracted people's attention. Vibration and noise not only affect the precision of instruments and the service life of equipment, but also deteriorate the environment. Especially in the fields of national defense and aerospace technology, vibration and noise reduction is very important. The vibration source component is made of high damping material, which does not increase the quality of the component itself but does not decrease the strength, and also has a good vibration and noise reduction effect. Compared with rubber, polymers and plastics, damping alloys have better mechanical properties and certain corrosion resistance, and can maintain better damping properties at high...

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Application Information

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IPC IPC(8): C22C38/22C22C38/20C22C33/04C21D8/02
CPCC22C38/22C21D8/0247C22C33/04C22C38/001C22C38/004C22C38/20
Inventor 胡小锋闫德胜戎利建韩仲景姜海昌赵明久
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI