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1. 发明申请

US20080210353A1 High-strength copper alloys with excellent bending workability and terminal connectors using the same 审中-公开
标题翻译：具有优异的弯曲加工性的高强度铜合金和使用其的端子连接器
公开(公告)号：US20080210353A1
公开(公告)日：2008-09-04
申请号：US12082531
申请日：2008-04-11
申请人： Kazuhiko Fukamachi , Masato Shigyo
发明人： Kazuhiko Fukamachi , Masato Shigyo
IPC分类号： C22F1/08 , C22C9/02
CPC分类号： C22C9/02 , C22F1/08
摘要： The invention aims at providing high-strength copper alloy, especially phosphor bronze, with excellent bending workability. The excellently bendable high-strength copper alloy is obtained through grain size control whereby a finally cold rolled copper alloy with a tensile strength and 0.2% yield strength different by not more than 80 MPa is allowed to have characteristics such that its mean grain size (mGS) after annealing at 425° C. for 10,000 seconds is not more than 5 μm and the standard deviation of the mean grain size (σGS) is not more than ⅓×mGS. Improvements in characteristics presumably attributable to the synergistic effect of grain-boundary strengthening and dislocation strengthening are stably achieved by the adjustments of cold rolling and annealing conditions and by the study of the correlation between pertinent characteristic values after the final rolling. The method of processing the alloy comprises cold rolling to a reduction percentage of at least 45%, final annealing to the extent that the mean grain size (mGS) is not more than 3 μm and the standard deviation of the mean grain size (σGS) is not more than 2 μm, and final cold rolling to a reduction percentage of 10-45%.
摘要翻译：本发明旨在提供优异的弯曲加工性的高强度铜合金，特别是磷青铜。通过晶粒尺寸控制获得优异的可弯曲的高强度铜合金，使得具有拉伸强度和0.2％屈服强度不同于80MPa的最终冷轧铜合金具有使其平均晶粒尺寸（mGS））在425℃退火10,000秒后不大于5um，平均晶粒尺寸（sigmaGS）的标准偏差不大于1/3×mGS。通过调整冷轧和退火条件以及通过研究最终轧制后的相关特征值之间的相关性，稳定地实现了通过晶界强化和位错强化的协同效应推测的特性的改善。处理合金的方法包括冷轧至至少45％的还原率，最终退火至平均晶粒尺寸（mGS）不大于3μm，平均晶粒尺寸（sigmaGS）的标准偏差不超过2毫米，最终冷轧减少百分比为10-45％。

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