Preparation process of superfine high-strength high-conductivity copper alloy
By constructing a cross-shaped nanotwin network in a copper alloy matrix through multi-pass asynchronous rolling and square wave pulsed current aging treatment, and using the non-thermal effect of high-frequency current to drive the precipitation of solute atoms, the problem of the contradiction between conductivity and strength in traditional processes is solved, achieving a balance between high strength and high conductivity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGSU MEILIN COPPER
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to improve the conductivity of copper alloys without sacrificing strength. There is a contradiction between conductivity and strength in traditional processes, and conventional improvements have failed to fundamentally resolve the conflict between high strength and high conductivity.
By employing multi-pass asynchronous rolling and square wave pulsed current aging treatment, a cross-shaped nanotwin network is constructed in the copper alloy matrix. The non-thermal effect of high-frequency current drives the solute atoms to precipitate at specific points at low temperatures, suppressing grain boundary migration and micro-lattice distortion, thereby achieving precise coherent precipitation of solute atoms.
While maintaining the integrity of the ultrafine microstructure, it significantly improves the conductivity and strength of the copper alloy, achieving a balance between high strength and high conductivity, and broadening the stable operating window of the process.
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Figure CN122406133A_ABST