High-damping MnCu alloy and powdery metallurgy preparation technology thereof

A powder metallurgy and preparation process technology, applied in the field of damping materials and their preparation, can solve the problems of insufficient damping performance and casting formability of MnCu damping alloys, and achieve the effects of flexible formability, flexible formability and cost reduction.

Inactive Publication Date: 2014-10-29
TIANJIN YINLONG HIGH TECH NEW MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to develop a high-damping MnCu alloy and its powder metallurgy preparation process for the defects of MnCu damping alloys in terms of damping performance and casting formability.

Method used

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  • High-damping MnCu alloy and powdery metallurgy preparation technology thereof
  • High-damping MnCu alloy and powdery metallurgy preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: The mass percentages of the high-damping MnCu alloy in the matrix alloy powder, ferromagnetic particles and sintering aids are as follows: the matrix alloy powder is Mn: 80%, Cu: 10%, Fe: 6%; strong The magnetic particles are Co 3 B: 2%; the sintering aid is Bi: 2%. The matrix alloy powder, strong magnetic particles and sintering auxiliary agent are fully mixed in the ball mill for 1h, the forming pressure of the cold press molding machine is 290MPa, the sintering temperature is 1000°C, sintering in vacuum, the sintering time is 1h, and the solid solution time is 6h .

Embodiment 2

[0022] Example 2: The mass percentages of the high-damping MnCu alloy in the matrix alloy powder, ferromagnetic particles and sintering aids are as follows: the matrix alloy powder is Mn: 75%, Cu: 15%, Al: 2%; strong The magnetic particles are Co 2 B: 5%; sintering aid is Si: 3%. The matrix alloy powder, strong magnetic particles and sintering auxiliary agent are fully mixed in the ball mill for 1.2h, the forming pressure of the cold press molding machine is 300MPa, the sintering temperature is 950°C, sintering in vacuum, the sintering time is 1h, and the solid solution time is 7h.

Embodiment 3

[0023] Example 3: The mass percentages of the high-damping MnCu alloy in the matrix alloy powder, ferromagnetic particles and sintering aids are as follows: the matrix alloy powder is Mn: 69%, Cu: 10%, Ni: 5%; strong The magnetic particle is MnB: 12%; the sintering auxiliary agent is Bi: 4%. The matrix alloy powder, strong magnetic particles and sintering auxiliary agent are fully mixed in the ball mill for 1.5h, the forming pressure of the cold press molding machine is 295MPa, the sintering temperature is 950°C, the sintering atmosphere is Ar (one atmospheric pressure), and the sintering time is 1.5h , The solid solution time is 9h.

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Abstract

The invention discloses a high-damping MnCu alloy and a powdery metallurgy preparation technology thereof. According to the high-damping MnCu alloy, Mn, Cu, Al, Ni and Fe are used as main components, the damping property can be enhanced by adding one or more of strongly magnetic particles Co3B, Co2B, Fe2B, FeB and MnB, and the sintering performance of the high-damping MnCu alloy can be effectively improved by adding one or more of Bi, Si, Sn and B as a sintering auxiliary. Compared with the traditionally cast MnCu-based damping alloy, the high-damping MnCu alloy has the characteristics of being higher in damping property, wider in damping temperature range, more flexible in formability and the like, and further the energy consumption can also be decreased. The formability of the prepared high-damping alloy is more flexible, so that the processing load of the subsequence procedures of rolling, grinding, cutting and the like can be reduced, and the cost reduction and mass production can be facilitated.

Description

technical field [0001] The invention relates to a damping material and a preparation method thereof, in particular to a high damping MnCu alloy and a powder metallurgy preparation process thereof. Background technique [0002] For certain dynamic structures in many fields such as aviation, aerospace, automobiles, and electronics industries, the vibration and noise need to be strictly controlled, which puts forward higher requirements for the damping performance of materials. For example, the failure analysis statistics of rockets and satellites show that about two-thirds of the failures are related to vibration and noise. Damping materials and technology are the most effective methods to control structural resonance and noise. Damping materials are the foundation and core of damping technology, and are a research field that is highly valued internationally. Therefore, the development of structural high-damping alloys with good damping performance, mechanical properties and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C22/00C22C30/02C22C1/04
Inventor 谢志峰余黎明冀璞光
Owner TIANJIN YINLONG HIGH TECH NEW MATERIAL RES INST
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