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Composite modificator improving wear performance of copper-zinc-aluminum memory alloy in alkaline medium

A technology of compound modifier and memory alloy, which is applied in the field of copper-based memory alloy, can solve problems such as the stabilization of coarse grained martensite, limit the application range, and affect wear resistance, so as to optimize the structure, purify the alloy liquid, and improve The effect of wear resistance

Inactive Publication Date: 2014-12-24
ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, copper-zinc-aluminum shape memory alloys have defects such as coarse grains and martensite stabilization, which seriously affect the wear resistance and greatly limit the scope of application, especially the wear performance in alkaline media.

Method used

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  • Composite modificator improving wear performance of copper-zinc-aluminum memory alloy in alkaline medium

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Embodiment Construction

[0008] Using Zn25 wt %, Al4 wt %, and copper as raw materials, it was weighed and then smelted in an intermediate frequency induction melting furnace. The smelting process is as follows: add electrolytic copper, zinc ingots, and aluminum ingots. After the materials are completely melted, when the temperature rises to 1240 ° C ~ 1260 ° C, the compound rare earth modifier is added by the flushing method. The amount of the compound modifier is 0.2wt% ~ 1.2wt %. Pouring into an ingot with a diameter of φ80×150mm. The annealing treatment is heating to 850°C for 24 hours and then cooling with the furnace, then turning to remove the 2-3mm dezincification layer on the surface, and then forging the ingot at 850°C for 30 minutes to form a φ55×60mm bar. Finally, heat treatment is carried out, and the specific process is as follows: after 30 minutes of heat preservation at 850 ° C, it is taken out from the heat preservation furnace and cooled under atmospheric conditions. Sampling is do...

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Abstract

The invention provides a composite modificator improving wear performance of a copper-zinc-aluminum memory alloy in an alkaline medium and belongs to the technical field of copper-based memory alloys. The composite modificator is characterized by comprising 10-15 wt% of Ce, 8-12 wt% of La, 8-12 wt% of Nd, 6-9 wt% of Sc, 6-9 wt% of Lu, 4-8 wt% of Ni, 10-20 wt% of a group containing Y, Pr, Tb, Eu, Gd, Ho, Er and Tm, 2-5 wt% of V, and 2-5 wt% of Zr, with the balance being copper. The composite rare-earth modificator is a block alloy, and has a melting point ranging from 850 DEG C to 1150 DEG C. The adding amount of the composite rare-earth modificator ranges from 0.2 wt% to 1.2 wt%.

Description

technical field [0001] The invention belongs to the technical field of copper-based memory alloys, in particular to a composite modifier for improving the wear performance of copper-zinc-aluminum memory alloys in alkaline media. Background technique [0002] Recent studies have shown that shape memory alloys not only have shape memory, pseudoelasticity and high damping, but also have good wear resistance. The excellent wear resistance of shape memory alloys was proposed by the former Soviet scholar AkceAoB in 1982, but it was not paid attention to at that time. The research on the wear properties of shape memory alloys mainly focuses on NiTi-based alloys abroad, and the research on the wear properties of copper-based memory alloys is rarely reported. There are not many reports on this aspect at home and abroad, and different scholars have different opinions on the wear resistance mechanism of shape memory alloys. Copper-zinc-aluminum shape memory alloy is one of the most p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C1/06
Inventor 司松海李晓薇刘光磊张志敏杨嵩
Owner ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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