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Copper-gold alloy rolling process

An alloy and process technology, applied in the field of copper-gold alloy rolling process, can solve the problems of low yield, easy cracking, lower product yield, etc., and achieve the effect of small loss

Active Publication Date: 2019-05-21
光洋新材料科技(昆山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] AuCu50~99wt% alloy ingot, due to the existence of brittle phase in the material, it is easy to crack during the rolling process of large deformation, which will reduce the product yield
Often the larger the rolling ratio, the lower the yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～12

[0021] The copper-gold alloy plate is manufactured by the following process:

[0022] ① According to the raw materials of 50-99wt% copper, 1-50wt% gold, and impurity mass ratio <5000ppm, they are melted and cast into alloy ingots;

[0023] ②Annealing the alloy ingot obtained in step ① to 650-800°C under the atmosphere of protective gas, and keeping it warm for 1h-3h to obtain a thick ingot;

[0024] ③The ingot obtained in step ② is transferred from H 0 Rolled to thickness H 1 , the rolling direction is the length direction of the ingot, the deformation amount is 5-50%, and a thick rolled billet is obtained;

[0025] ④Anneal the slab obtained in step ③ to 650-800°C under the atmosphere of protective gas, and keep it warm for 10min-3h to obtain a thin ingot;

[0026] ⑤The ingot obtained in step ④ is transferred from H 1 Rolled to thickness H 2 , the rolling direction is the length direction of the ingot, the deformation amount is 5-50%, and a thin rolled billet is obtained;...

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PUM

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Abstract

The invention belongs to the technical field of alloy processing, and particularly relates to a copper-gold alloy rolling process. The copper-gold alloy rolling process comprises the following steps of: melting and casting gold and copper into an alloy billet according to the required proportion, obtaining a thick ingot casting after annealing and heat preservation, rolling in a length direction,causing the amount of deformation to be 5-50%, thereby obtaining a thick rolled compact, obtaining a thin ingot casting after annealing and heat preservation, rolling in a length direction, causing the amount of deformation to be 5-50%, thereby obtaining a thin rolled compact, repeating the annealing and rolling until the desired thickness is obtained. The copper-gold alloy rolling process can beused for manufacturing a copper-gold alloy target with the purity of 99.5 wt%; the rolling ratio of the copper-gold alloy target is 20-90%; the copper-gold alloy target does not crack; and the loss ofthe copper-gold alloy target is less than 0.1%.

Description

technical field [0001] The invention belongs to the technical field of alloy processing, in particular to a copper-gold alloy rolling process. Background technique [0002] Copper-gold alloy forms a continuous solid solution during solidification, and the distance between liquidus and solidus of the alloy is very narrow, and the alloy containing 80% Au has the lowest melting point (910°C). Copper-gold alloy undergoes order transformation at about 400℃ when it is cooled slowly. The confirmed superstructure ordered phases are AuCu and AuCu3, and possibly Au3Cu ordered phase. When the copper-gold alloy containing 50% Cu (atomic fraction) is slowly cooled from high temperature, it will transform from a face-centered cubic disordered solid solution to an AuCuⅡ phase with a rhomboid lattice in the temperature range of 380-410 ° C, and form c below 380 ° C AuCuI phase of square lattice with / a=0.92. The formation temperature of Aucu3 ordered phase is 390℃. When the copper-gold ...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22F1/08C22F1/02B21B3/00
Inventor 张剑林泓成邹天蔚方家芳
Owner 光洋新材料科技(昆山)有限公司