Copper-zinc-aluminum shape memory alloy abrasion resistance material and manufacturing method for the same

Abstract

This invention relates to a wear resisting material of CuZnAl shape memory alloy and its preparation method including: taking electrolytic copper, 0#Zn, 00#Al and electrolytic nickel as the raw materials and adding compound rare earth refining agent in terms of composition match and smelting them to cast them to ingots when the temperature of the alloy fluid reaches to 1230-1250deg.C to be heated to 800-820deg.C for 24h then cooled along with the furnace to remove the 2-3mm dezincifying layer on the surface and forged to a plate, then two-stage time effect heat process is done under 830-870deg.C+130-170deg.C+40-60deg.C, and the wear resisting material includes the components in terms of mass percentages: Zn 24.5-26%, Al 3.7-3.8%, Ni 0.9-1.0% and compound rare earth refining agent 0.06-0.09%, which includes the components in terms of mass percentages: La 45.5%, Ce 44.9%, Pr 7.7%, Nd 1.9% and copper.

Description

technical field [0001] The invention relates to the technical field of preparation of a shape-memory alloy material, in particular a copper-zinc-aluminum shape-memory alloy wear-resistant material. Background technique [0002] Copper alloys are widely used as wear-resistant materials in bearing bushes, spring washers, worm gears, and worms. Aluminum-iron bronze and tin bronze are two alloys that are widely used. The problems existing in these two materials are: 1. The casting process is relatively complicated, and the forming performance is poor, resulting in a low yield during production; 2. The cost is high, resulting in low production efficiency. Literature {1. Wang Hongwei et al.: Research on dry sliding wear of Cu-based shape memory alloys, Acta Metall Sinica. 1991, 27(6) A445-448; 2. Wang Fengting: Research on wear resistance of CuZnAl shape memory alloys, Journal of Dalian University of Technology. 1991, 31(2)245-248} studied the dry wear properties of copper-zinc-...

AI Technical Summary

Problems solved by technology

The problems of these two materials are: 1. The casting process is relatively complicated and the forming performance is poor, resulting in low yield during production; 2. The cost is high, resulting in low production efficiency

However, after improving the mechanical properties of copper-zinc-aluminum shape memory alloys and preventing martensite stabilization by using compound rare earth refinement methods, under dry sliding wear conditions, different heat treatment processes, loads, wear times and phase transition temperatures have different effects on copper-zinc-aluminum alloys. There have been no reports on the impact of shape memory alloys on wear properties, and no relevant patents have been published after inquiries.

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