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Nb-containing iron-manganese-based damping alloy and preparation method thereof

A damping alloy, iron-manganese-based technology, used in manufacturing tools, heat treatment equipment, furnace types, etc., can solve problems such as undiscovered, and achieve the effects of improving damping performance, high strength, and simple preparation methods

Active Publication Date: 2017-12-19
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The literature search has not found that it has the same composition as the material of the present invention, nor has it found any relevant reports on the same preparation method as the present invention

Method used

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  • Nb-containing iron-manganese-based damping alloy and preparation method thereof
  • Nb-containing iron-manganese-based damping alloy and preparation method thereof
  • Nb-containing iron-manganese-based damping alloy and preparation method thereof

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preparation example Construction

[0029] The preparation method and specific steps of the Nb-containing iron-manganese-based high-strength and high-damping alloy of the present invention are as follows:

[0030] (1) according to the mass percentage content of each constituent element listed in Table 1, take by weighing Fe with a purity of 99.99%, Mn with a purity of 99.9% and Nb with a purity of 99.95%;

[0031] Table 1 Mass fraction of constituent elements

[0032]

[0033] (2) Put the Fe, Mn and Nb raw materials weighed in the first step into a non-consumable vacuum arc melting furnace, and draw a vacuum so that the vacuum degree of the backside reaches 5×10 -3 Pa, and then filled with high-purity argon to 500Pa, using high-temperature electric arc to melt the raw material into a button-shaped ingot. During melting, the alloy needs to be turned over and smelted five times. Stir to ensure that the sample composition is uniform;

[0034] (3) Put the smelted alloy ingot into a 304 stainless steel tube with...

Embodiment 1

[0039] Example 1: Preparation of Fe-17Mn-0.1Nb alloy.

[0040] (1) According to the mass percentage content of Fe (82.9%), Mn (17%) and Nb (0.1%), it is 99.99% Fe, 99.9% Mn and 99.95% Nb in purity;

[0041] (2) Put the Fe, Mn and Nb raw materials weighed in the first step into a non-consumable vacuum arc melting furnace, and draw a vacuum so that the vacuum degree of the backside reaches 5×10 -3 Pa, and then filled with high-purity argon to 500Pa, using high-temperature electric arc to melt the raw material into a button-shaped ingot. During melting, the alloy needs to be turned over and smelted five times. Stir to ensure that the sample composition is uniform;

[0042] (3) Put the smelted alloy ingot into a 304 stainless steel tube with an outer wire, fill the tube with an oxygen scavenger, screw on the caps at both ends, and fill the gap between the caps with a mass ratio of clay and steel brick powder of 4 : 1 add water and seal the viscous mixture, then put it into a hea...

Embodiment 2

[0046] Example 2: Preparation of Fe-17Mn-0.5Nb alloy.

[0047] (1) According to the mass percentage content of Fe (82.5%), Mn (17%) and Nb (0.5%), it is 99.99% Fe, 99.9% Mn and 99.95% Nb in purity;

[0048] (2) Put the Fe, Mn and Nb raw materials weighed in the first step into a non-consumable vacuum arc melting furnace, and draw a vacuum so that the vacuum degree of the backside reaches 5×10 -3 Pa, and then filled with high-purity argon to 500Pa, using high-temperature electric arc to melt the raw material into a button-shaped ingot. During melting, the alloy needs to be turned over and smelted five times. Stir to ensure that the sample composition is uniform;

[0049] (3) Put the smelted alloy ingot into a 304 stainless steel tube with an outer wire, fill the tube with an oxygen scavenger, screw on the caps at both ends, and fill the gap between the caps with a mass ratio of clay and steel brick powder of 4 : 1 add water and seal the viscous mixture, then put it into a hea...

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Abstract

The invention provides an Nb-containing ferrum-manganese-based damping alloy and a preparation method thereof. The alloy is composed of 17% by mass of Mn, 0.1-1% by mass of Nb and the balance of Fe, totaling 100%. The preparation method comprises the following steps of: firstly weighing the raw materials in percentages by mass; performing vacuum arc melting to obtain cast ingots; and then performing homogeneous thermal treatment, hot-rolling, sizing and solid solution treatment successively on the cast ingots. The maximum damping loss factor tandelta of a Fe-17 alloy is increased to 0.055, the temperature interval of high damping (tandelta is greater than 0.03) is increased to 25-330 DEG C, and meanwhile, a good mechanical property (the room temperature tensile strength reaches 691-834MPa and the ductility is 15.7-22.6%) is maintained at the same time. The raw materials are low in price, the thermal processing performance is excellent, the preparation method is relatively simple, and the alloy has the characteristics of high strength and high damping.

Description

technical field [0001] The invention relates to a damping alloy, in particular to a Nb-containing ferromanganese-based high-strength and high-damping alloy. The invention relates to a method for preparing a damping alloy. Background technique [0002] Damping alloy, also known as vibration-damping alloy, is a new type of metal functional material that can convert mechanical vibration energy into heat energy and dissipate it. This performance is called damping or internal friction. Damping alloys not only have good damping performance, but also have high mechanical strength, so they can be directly used as structural materials. All kinds of vibration source components made of damping alloy can fundamentally and effectively reduce vibration and noise. The physical parameters that characterize the damping performance of materials mainly include specific damping SDC, damping loss factor tanδ, logarithmic decay rate δ, and internal friction value Q -1 , It is generally conside...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/04C22C38/12C21D8/02C21D6/00C21D9/46
CPCC21D6/005C21D8/0226C21D9/46C22C38/04C22C38/12
Inventor 陈枫叶卫林姜啸佟运祥田兵李莉
Owner HARBIN ENG UNIV
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