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公开(公告)号：US11486029B2
公开(公告)日：2022-11-01
申请号：US16490562
申请日：2018-02-12
发明人： Jiangang Li , Taisheng Yang , Hongbin Zhao , Chaoyong Yang , Yaohua Zhou , Qiang Huang
摘要： The invention is a precipitation-strengthened copper alloy, including the following components in percentage by weight: 80 wt %-95 wt % of Cu, 0.05 wt %-4.0 wt % of Sn, 0.01 wt %-3.0 wt % of Ni, 0.01 wt %-1.0 wt % of Si, and the balance of Zn and unavoidable impurities. According to the invention, the comprehensive performance of the alloy is improved by solution strengthening and precipitation strengthening; while the strength of the matrix is improved, the electrical conductivity of the alloy is hardly affected, the bending workability meets the requirements, and the stress relaxation resistance comparable to that of tin phosphor bronze is achieved. The comprehensive performance of the alloy of the invention is superior to that of the tin phosphor bronze C51900. Furthermore, the alloy of the invention is low in raw material cost, has obvious advantages in welding and plating.
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公开(公告)号：US11655524B2
公开(公告)日：2023-05-23
申请号：US16487428
申请日：2018-09-04
发明人： Chaoyong Yang , Ning Li , Jiangang Li , Hongbin Zhao , Taisheng Yang , Yaohua Zhou
摘要： The invention is a copper alloy with excellent comprehensive performance, including the following components in percentage by weight: 0.4 wt %-2.0 wt % of Ni, 0.2 wt %-2.5 wt % of Sn, 0.02 wt %-0.25 wt % of P, 0.001 wt %-0.5 wt % of Si, and the balance of Cu and unavoidable impurities. The copper alloy has a yield strength of 550 MPa or above, and an electrical conductivity of 38% IACS or above. A bending workability is as follows: the value of R/t in the GW direction is less than or equal to 1, and the value of R/t in the BW direction is less than or equal to 2; and after the copper alloy is kept at 150° C. for 1000 hours, a residual stress rate is greater than or equal to 75%, and the stress relaxation resistance is excellent.
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公开(公告)号：US20180066339A1
公开(公告)日：2018-03-08
申请号：US15558477
申请日：2016-06-08
发明人： Jiangang Li , Jun Ma , Hongbin Zhao , Xiangpeng Meng , Ruida Xu
摘要： The present invention discloses copper alloy containing cobalt and silicon, which comprises (in percentage of weight): 69% to 92% of copper; 6.5% to 30.5% of zinc; 0.01% to 3% of cobalt; and 0.01% to 0.5% of silicon; wherein the total content of copper and zinc is greater than 95%, and the content of inevitable impurities is less than 0.2%. Preferably, the copper alloy comprises matrix phases of copper-zinc α solid solution and CoxSiy precipitated phases; the CoxSiy precipitated phases are dispersedly distributed on a matrix phase; the percentage of the matrix phases by area is greater than or equal to 95%; and, the percentage of the CoxSiy precipitated phases by area is 0.01% to 5%.
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公开(公告)号：US11255000B2
公开(公告)日：2022-02-22
申请号：US16607720
申请日：2018-07-19
发明人： Chaoyong Yang , Jiangang Li , Ning Li , Taisheng Yang , Hongbin Zhao , Yaohua Zhou
IPC分类号： C22C9/04
摘要： The present invention discloses a copper alloy, which includes: 5 wt % to 15 wt % of Zn, 0.2 wt % to 2.5 wt % of Sn, 0.1 wt % to 2.0 wt % of Ni, 0.01 wt % to 0.3 wt % of P, 0 to 0.3 wt % of Mg, 0 to 0.5 wt % of Fe, and a balance of Cu and inevitable impurities. Preferably, it is controlled that 1.0 wt %≤Ni+Sn≤3.5 wt %, the weight ratio of Ni to Sn is 0.08 to 10; the weight ratio of Ni to P is 2 to 15, Ni and P form a NiP compound in a matrix. During the crystal orientation analysis using EBSD measurement, the area in a Brass orientation {011} at a derivation angle of less than 15° accounts for 10% to 25%. The yield strength 600 MPa, the electrical conductivity is ≥25% IACS, and the bending machinability is excellent because the value R/t in a GW direction is ≤1 and the value R/t in a BW direction is ≤2.
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