Ultrahigh-strength fracture-resistant copper-nickel-tin alloy foil and manufacturing method thereof

The embodiment of the invention discloses an ultra-high-strength and fracture-resistant copper-nickel-tin alloy foil and a manufacturing method of the ultra-high-strength and fracture-resistant copper-nickel-tin alloy foil. According to the copper-nickel-tin alloy foil, the problems that an existing...

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Bibliographische Detailangaben
Hauptverfasser: YU MIN, LYU CHENYI, LI ZHANQING, GAO HONGXING, XIE DONGHUI, LI ZHENRUI, XUE YIQING, CAI KAIHONG, ZHANG JING
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The embodiment of the invention discloses an ultra-high-strength and fracture-resistant copper-nickel-tin alloy foil and a manufacturing method of the ultra-high-strength and fracture-resistant copper-nickel-tin alloy foil. According to the copper-nickel-tin alloy foil, the problems that an existing copper-nickel-tin alloy foil is low in strength, poor in strength and plasticity matching and poor in uniformity, a strip foil is prone to breakage in the machining process, and elastic elements such as a voice coil motor elastic piece are prone to breakage and failure are solved, the tensile strength of the copper-nickel-tin alloy foil is larger than or equal to 1450 MPa, the yield strength is larger than or equal to 1300 MPa, the ductility is 3.0%-6.5%, and the electric conductivity (IACS) is 8.0%-9.5%. Foil grains are fine and uniform, the grain size ranges from 8 micrometers to 15 micrometers, and the foil is suitable for being applied to elastic elements such as voice coil motor elastic pieces, diaphragms, di