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公开(公告)号：US11499207B2
公开(公告)日：2022-11-15
申请号：US16496269
申请日：2018-03-20
发明人： Akihiro Kakitani , Hironori Imamura
摘要： Provided is a Corson alloy having improved bending workability and also having high dimensional accuracy after press-working. A copper alloy strip which is a rolling material, the rolling material containing from 0 to 5.0% by mass of Ni or from 0 to 2.5% by mass of Co, the total amount of Ni+Co being from 0.2 to 5% by mass; from 0.2 to 1.5% by mass of Si, the balance being copper and unavoidable impurities, wherein the rolling material has a surface satisfying the relationship: 1.0≤I(200)/I0(200)≤5.0; wherein an area ratio of Cube orientation {100} is from 2 to 10% in EBSD measurement of a rolling parallel cross section; and wherein a ratio: (an average crystal grain size of Cube orientation {100} of the rolling parallel cross section)/(an average crystal grain size of the rolling parallel cross section) is from 0.75 to 1.5.
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公开(公告)号：US11203799B2
公开(公告)日：2021-12-21
申请号：US16496258
申请日：2018-03-20
发明人： Akihiro Kakitani
摘要： Provided is a Corson alloy having improved bending workability and also having high dimensional accuracy after press-working. A copper alloy strip which is a rolling material, the rolling material containing from 0 to 5.0% by mass of Ni or from 0 to 2.5% by mass of Co, the total amount of Ni+Co being from 0.2 to 5% by mass; from 0.2 to 1.5% by mass of Si, the balance being copper and unavoidable impurities, wherein the rolling material satisfies the relationship: A0/A≤1.000, in which A0 represents a projected area of an indentation remaining after carrying out a Vickers hardness test by maintaining a square pyramidal indenter for 10 seconds while applying a test force with a load of 1 kg to a surface of a base material and releasing the test force; and A represents an area connecting vertices of the indenter, and wherein the rolling material satisfies the relationship: 0.1≤I(200)/I0(200)
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