Two-stage solid solution heat treatment method of copper chromium zirconium system alloy

A heat treatment method, two-stage solid solution technology, applied in the field of high-strength and high-conductivity copper-chromium-zirconium alloy system, two-stage solution heat treatment, can solve problems such as difficulty in obtaining supersaturated solid solution

Inactive Publication Date: 2015-07-01
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, for this type of copper-chromium-zirconium alloy, it is difficult to obtain a pure supersaturated solid solution by a single solution heat treatment system

Method used

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  • Two-stage solid solution heat treatment method of copper chromium zirconium system alloy
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  • Two-stage solid solution heat treatment method of copper chromium zirconium system alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The alloy compositions used in the present invention are shown in Example 1 in Table 1.

[0032] (1) Processing technology: hot extrusion, extruded from Φ45mm to Φ10mm, and the processing deformation is 95%.

[0033] (2) The first stage solid solution process: heat preservation at 940°C for 12h, and then quench.

[0034] (3) Second-stage solid solution process: heat preservation at 1010°C for 1 hour, and then quench.

[0035] (4) Comparative alloy solid solution process: heat preservation at 950°C for 1h, and then quench.

[0036] (5) Subsequent processing and aging process: direct aging, heat preservation at 450°C for 3 hours, and air cooling.

[0037] After the above-mentioned deformation heat treatment process, the comprehensive performance test results of the test alloy and the comparison alloy are shown in Example 1 in Table 2.

Embodiment 2

[0039] The alloy composition used in the present invention is shown in Example 2 in Table 1.

[0040] (1) Processing technology: hot rolling, rolling from thickness 100mm to 18mm, reduction 82%.

[0041] (2) The first stage solid solution process: heat preservation at 945°C for 24h, and then quench.

[0042] (3) Second-stage solid solution process: 1040°C heat preservation for 1.5h, quenching.

[0043] (4) Comparative alloy solid solution process: heat preservation at 1010°C for 0.5h, and quench.

[0044] (5) Subsequent processing and aging process: direct aging, heat preservation at 460°C for 4 hours, and air cooling.

[0045] After the above-mentioned deformation heat treatment process, the comprehensive performance test results of the test alloy and the comparison alloy are shown in Example 2 in Table 2.

Embodiment 3

[0047] The alloy composition used in the present invention is shown in Example 3 in Table 1.

[0048] (1) Processing technology: hot extrusion, extrusion from Φ45mm to Φ10mm, deformation 95%.

[0049] (2) The first-stage solid solution process: heat preservation at 915°C for 10 hours, and then quench.

[0050] (3) Second-stage solid solution process: heat preservation at 990°C for 1 hour, and then quench.

[0051] (4) Comparative alloy solid solution process: heat preservation at 940°C for 1h, and then quench.

[0052] (5) Subsequent processing and aging process: direct aging, heat preservation at 440°C for 3 hours, and air cooling.

[0053] After the above-mentioned deformation heat treatment process, the comprehensive performance test results of the test alloy and the comparison alloy are shown in Example 3 in Table 2.

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Abstract

The present invention relates to a two-stage solid solution heat treatment method of copper chromium zirconium system alloy, and belongs to the field of non-ferrous metal heat treatment. According to the method, cast-condition copper chromium zirconium system alloy can be processed by one or a plurality of processes of extrusion, forging, rolling and drawing; first-stage solid solution heat treatment of the processing-condition copper chromium zirconium system alloy is performed; and second-stage solid solution heat treatment of the processed copper chromium zirconium system alloy is performed. The two-stage solid solution heat treatment method of the copper chromium zirconium system alloy overcomes the shortcomings of common single stage solid solution heat treatment processes, and can obtain relatively pure supersaturated solid solution. By subsequent thermomechanical treatment process of the copper chromium zirconium system alloy prepared by the method, the strength can be improved by about 20-50MPa compared with that of a alloy processed by the single-stage solid solution treatment process, and the conductivity can be at the same level or improved more compared with that of the alloy processed by the single-stage solid solution treatment process.

Description

technical field [0001] The invention relates to a two-stage solution heat treatment method suitable for copper-chromium-zirconium alloys, especially suitable for high-strength and high-conductivity copper-chromium-zirconium alloy systems. The alloy system has good applications in the fields of transportation, aerospace and new energy The prospect belongs to the field of heat treatment of non-ferrous metals. Background technique [0002] Compared with other high-strength and high-conductivity alloy systems, copper-chromium-zirconium alloys have obvious comprehensive performance advantages. Due to their balance of strength and conductivity, they can be used in many fields such as electronics, transportation, aerospace, and new energy. Microalloyed (alloying element content less than 1wt.%) copper-chromium-zirconium alloys have high strength (450-700MPa) while maintaining high electrical conductivity (80%-95%IACS), which can be used to prepare large-scale integration Circuit l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/08C22C9/00
Inventor 解浩峰米绪军彭丽军尹向前李艳锋冯雪黄国杰
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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