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A kind of iron base damping alloy with high damping characteristic and preparation method thereof

A vibration-damping alloy, iron-based technology, applied in the field of alloy materials, can solve problems affecting the stability and reliability of mechanical parts, catastrophic consequences, etc., to optimize size and mobility, improve magnetic properties and mechanical properties, The effect of improving strength and wear resistance

Active Publication Date: 2016-04-13
曹帅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vibration and noise will seriously affect the stability and reliability of mechanical parts, and will lead to catastrophic consequences in severe cases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An iron-based vibration damping alloy, the composition of the material is Zr: 1.5%, Al: 12%, Mn: 3%, Zn: 1.2%, Si: 2.1%, Hf: 1.3%, and Fe is the balance according to the weight percentage , the sum of each component is 100%. The preparation method of the alloy is as follows: the prepared raw materials are put into a vacuum induction furnace, and the materials are induction-melted in argon protection mode after vacuuming. The temperature is heated to 1600° C. to form an alloy melt and held for 10 minutes to achieve uniform composition. The casting temperature is 1550 degrees, and after it is completely solidified, the mold is opened and the casting is taken out. The heat treatment process of the material is: heat preservation at 1000°C for 1 hour and furnace cooling to room temperature. The yield strength of the obtained material is 360MPa, the tensile strength is 730MPa, the elongation is 23%, and the specific damping performance (SDC) of the material is >30%.

Embodiment 2

[0018] An iron-based vibration damping alloy, the composition of which is Zr: 1.9%, Al: 13%, Mn: 2%, Zn: 1.6%, Si: 2.4%, Hf: 1.6%, and Fe is the balance according to the weight percentage , the sum of each component is 100%. The preparation method of the alloy is as follows: the prepared raw materials are put into a vacuum induction furnace, and the materials are induction-melted in argon protection mode after vacuuming. The temperature is heated to 1550° C. to form an alloy melt and kept for 10 minutes to achieve uniform composition. The casting temperature is 1550 degrees, and after it is completely solidified, the mold is opened and the casting is taken out. The heat treatment process of the material is: heat preservation at 1000°C for 1 hour and furnace cooling to room temperature. The yield strength of the obtained material is 380MPa, the tensile strength is 760MPa, the elongation is 26%, and the specific damping performance (SDC) of the material is >30%.

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Abstract

The invention discloses iron-based damping alloy with a high damping characteristic and the preparation method of the iron-based damping alloy. The iron-based damping alloy comprises the following components according to weight percentages: 1-5% of Zr, 10-15% of Al, 2-6% of Mn, 1-2% of Zn, 2-3% of Si, 1-2% of Hf and the balance of Fe. The alloy comprises the alloy elements of Zr, Al, Mn, Zn, Si and Hf, and is smelted under the protection of argon by using a conventional induction melting furnace. After the casting and the thermal treatment, the yield strength is more than 320MPa, the tensile strength is more than 650MPa, the specific damping capacity (SDC) of the material is more than 30%, and the damping characteristic of the obtained material maintains a relatively constant value at a wider temperature (lower than 300 DEG C) and in a large strain amplitude range. The product designed according to the invention has the characteristics of simple preparation method, and easy implementation and production.

Description

technical field [0001] The invention relates to an alloy material, in particular to an iron-based damping alloy with high damping properties and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, mechanical equipment and weapons are developing in the direction of high efficiency, high speed and automation, and the problem of fatigue fracture caused by vibration and noise is becoming increasingly prominent. Vibration and noise will seriously affect the stability and reliability of mechanical components, and even lead to catastrophic consequences. High damping alloys can absorb the energy of external vibration through the internal damping mechanism of the material, and convert these mechanical energy into heat energy and dissipate it. Vibration reduction and noise reduction can be achieved in appropriate parts of electromechanical products. Vibration-absorbing alloys can directly start with the noise source manuf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/14C22C33/04
Inventor 刘亚军曹贺全曹帅郭强
Owner 曹帅
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