公开(公告)号：US20060086440A1

公开(公告)日：2006-04-27

申请号：US11019495

申请日：2004-12-20

Applicant: John Boylan ,  Zhicheng Lin ,  Kent Stalker

Inventor： John Boylan ,  Zhicheng Lin ,  Kent Stalker

IPC: A61F2/82 ,  C22C14/00

CPC classification number: C22C30/00 ,  A61F2/915 ,  A61F2002/91516 ,  A61F2002/91525 ,  A61F2002/91533 ,  A61F2002/91575 ,  A61F2230/0013 ,  A61F2250/0098 ,  A61L31/022 ,  A61L31/18 ,  A61L2400/16 ,  C22C14/00 ,  C22C19/00 ,  C22F1/006

Abstract: A nickel-titanium alloy having a large, superelastic operating temperature window or range. The nickel-titanium alloy includes at least an additional element such as platinum, palladium, manganese, boron, aluminum, tungsten, and/or zirconium. When processed through heat treat and area reduction steps, the resultant alloy exhibits a wide superelastic temperature operating window if the characteristics of the alloy when plotted on a temperature versus stress curve can be expressed as UP=(0.66 ksi/° C.)(T)+σ0, with R2≧0.98, wherein σ0 is the upper plateau stress of the alloy at about 0° C., R2 is the coefficient of determination, and UP is the upper plateau stress of the alloy.

Abstract translation: 具有大的，超弹性的工作温度窗口或范围的镍钛合金。 镍 - 钛合金至少包括一种额外的元素，例如铂，钯，锰，硼，铝，钨和/或锆。 当通过热处理和面积还原步骤进行加工时，如果在温度对应力曲线上绘制时合金的特性可表示为UP =（0.66 ksi /℃）（T），则所得合金表现出宽的超弹性温度操作窗口 ）+σσ0，其中R 2≥0.98，其中σ0是在约0℃的合金的上平台应力。 R 2是确定系数，UP是合金的上平台应力。