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    METHOD OF FORMING A STRUCTURAL COMPONENT HAVING A NANO SIZED/SUB-MICRON HOMOGENEOUS GRAIN STRUCTURE
    1.
    发明申请
    METHOD OF FORMING A STRUCTURAL COMPONENT HAVING A NANO SIZED/SUB-MICRON HOMOGENEOUS GRAIN STRUCTURE 失效
    形成具有纳米尺寸/亚微米均质颗粒结构的结构组分的方法

    公开(公告)号：US20070261458A1

    公开(公告)日：2007-11-15

    申请号：US11285853

    申请日：2005-11-22

    申请人： Ramkumar Oruganti ,  Pazhayannur Ramanathan Subramanian ,  Judson Marte

    发明人： Ramkumar Oruganti ,  Pazhayannur Ramanathan Subramanian ,  Judson Marte

    IPC分类号： B21C23/00

    CPC分类号： B21C23/002 ,  B21C23/001 ,  B21C23/22

    摘要： A method of making nano/sub-micron sized grains in a work piece material having a lateral side has the steps of providing a die. The die has an entrance channel with a longitudinal axis and an exit channel. The entrance channel and the exit channel are connected to one another to form an angle. The method has the step of providing a first sacrificial material with a complementary size to the work piece and placing the sacrificial first material and the work piece in an entrance channel. The first sacrificial material and the work piece are aligned with the longitudinal axis. The method has the step of extruding the combination of the first sacrificial material, and the work piece through the intersection of the entrance and the exit channels. The resulting shear deformation forms the nano/sub-micron sized grains in the work piece. This configuration reduces frictional effects thereby producing homogenous nano grain structure. This configuration reduces applied load and enables equal channel angular extrusion of thin sheets.

    摘要翻译： 在具有侧面的工件材料中制造纳米/亚微米尺寸的颗粒的方法具有提供模具的步骤。 模具具有纵向轴线和出口通道的入口通道。 入口通道和出口通道彼此连接形成一个角度。 该方法具有提供具有与工件互补的尺寸的第一牺牲材料并将牺牲的第一材料和工件放置在入口通道中的步骤。 第一牺牲材料和工件与纵向轴线对齐。 该方法具有通过入口和出口通道的交叉部分挤出第一牺牲材料和工件的组合的步骤。 所产生的剪切变形在工件中形成纳米/亚微米尺寸的颗粒。 这种结构降低摩擦效应，从而产生均匀的纳米晶粒结构。 该配置减少了施加的负载，并实现了薄板的等通道角挤压。

    Apparatus and method for friction stir welding using a consumable pin tool
    7.
    发明授权
    Apparatus and method for friction stir welding using a consumable pin tool 有权
    使用消耗性销钉工具进行摩擦搅拌焊接的装置和方法

    公开(公告)号：US07784667B2

    公开(公告)日：2010-08-31

    申请号：US11386998

    申请日：2006-03-23

    申请人： Pazhayannur Ramanathan Subramanian ,  Earl Claude Helder ,  Timothy Joseph Trapp

    发明人： Pazhayannur Ramanathan Subramanian ,  Earl Claude Helder ,  Timothy Joseph Trapp

    IPC分类号： B23K20/12

    CPC分类号： B23K20/125 ,  B23K20/1215 ,  B23K20/1255 ,  B23K20/128

    摘要： The present invention provides a friction stir welding apparatus operable for welding one or more metals, metal alloys, or other materials, and a method for friction stir welding. The friction stir welding apparatus includes a pin tool holder, a shoulder having a surface coupled to the pin tool holder, and a pin tool coupled to the pin tool holder, the pin tool at least partially protruding from the surface of the shoulder, wherein the pin tool is made of a consumable pin tool material. The method includes introducing the pin tool into a workpiece; traversing the pin tool along a joint to be welded on the workpiece; and substantially continuously feeding the pin tool into the weld joint as it is traversed along the joint, thereby incorporating at least a portion of the consumable pin tool material into the volume of the joint to be welded.

    摘要翻译： 本发明提供了可操作用于焊接一种或多种金属，金属合金或其它材料的摩擦搅拌焊接装置，以及用于摩擦搅拌焊接的方法。 摩擦搅拌焊接装置包括销工具保持器，具有联接到销工具保持器的表面的肩部和联接到销工具保持器的销工具，销工具至少部分地从肩部的表面突出，其中， 销钉工具由消耗性销钉工具材料制成。 该方法包括将销工具引入工件; 沿着要焊接在工件上的接头穿过销钉工具; 并且当所述销工具沿着所述接头穿过时，将所述销工具基本上连续地供给到所述焊接接头中，从而将所述可消耗的销工具材料的至少一部分结合到待焊接的接头的体积中。