公开(公告)号：WO2008018901A8

公开(公告)日：2008-02-14

申请号：PCT/US2007/000732

申请日：2007-01-11

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： SHANKAR, M., Ravi ,  CHANDRASEKAR, Srinivasan ,  COMPTON, Walter, Dale ,  KING, Alexander, H. ,  TRUMBLEY, Kevin, P.

IPC: B22F9/04 ,  B22F1/00

Abstract: A method by which consolidated articles can be produced from nanocrystalline materials to have mechanical properties that can be improved through thermal treatment. The method entails machining a body to produce polycrystalline chips having nanocrystalline microstructures, and then consolidating the chips to form a consolidated article having mechanical properties that exceed that of the body from which the chips were formed. In particular, consolidation of nanocrystalline chips formed by machining a supersaturated solid-solution body causes precipitation of a fine dispersion of precipitates in the consolidated article, with the potential for certain properties to even improve during consolidation or subsequent thermal treatment of the consolidated article.

公开(公告)号：WO2008069809A1

公开(公告)日：2008-06-12

申请号：PCT/US2006/049423

申请日：2006-12-28

Applicant: PURDUE RESEARCH FOUNDATION ,  MOSCOSO, Wilfredo ,  MANN, James, B. ,  SHANKAR, M., Ravi ,  CHANDRASEKAR, Srinivasan ,  COMPTON, Walter, Dale

Inventor： MOSCOSO, Wilfredo ,  MANN, James, B. ,  SHANKAR, M., Ravi ,  CHANDRASEKAR, Srinivasan ,  COMPTON, Walter, Dale

IPC: B22F9/04 ,  B22F3/20

CPC classification number: B22F1/0044 ,  B21C23/001 ,  B22F2998/10 ,  B22F2999/00 ,  B23P13/00 ,  B23P15/00 ,  Y10T82/10 ,  Y10T82/2512 ,  Y10T407/1946 ,  Y10T407/24 ,  B22F9/04 ,  B22F3/20 ,  B22F2009/046

Abstract: A process by which nanostructured monolithic bodies can be produced in a single continuous operation, as opposed to multi-stage deformation processing. The process generally entails continuously producing a chip (24) having a nanostructured microstructure by engaging a solid body (10) with a cutting edge (18) of a tool while the solid body (10) and the cutting edge (18) move relative to each other, and simultaneously extruding the chip (24) in the immediate vicinity of the cutting edge (18), such as with a constraining member (16), as the chip (24) is separated from the solid body (10) by the cutting edge (18) to continuously plastically deform the chip (24) and produce a nanostructured monolithic body (26) immediately downstream of the cutting edge (18). The shape and size of the chip (24) can be simultaneously controlled by the extrusion process so that the nanostructured monolithic body (26) has a predetermined geometry. The nanostructured monolithic body (26) can be in the form of a product suitable for immediate use, or undergo further processing to yield a product.

Abstract translation: 与多阶段变形处理相反，在单个连续操作中可以制造纳米结构单体的方法。 该方法通常需要通过使固体（10）与工具的切割边缘（18）接合而连续地制造具有纳米结构微结构的芯片（24），同时固体（10）和切割刃（18）相对于 彼此之间，并且当芯片（24）与固体（10）分离时，通过例如用约束构件（16）同时将切屑（24）挤压在切割边缘（18）附近， 切割边缘（18）以使芯片（24）持续塑性变形，并且在切割边缘（18）的下游产生纳米结构的整体体（26）。 芯片（24）的形状和尺寸可以通过挤出工艺同时控制，使得纳米结构的整体体（26）具有预定的几何形状。 纳米结构整体体（26）可以是适于立即使用的产品的形式，或者进行进一步加工以产生产品。

公开(公告)号：WO2007130160A1

公开(公告)日：2007-11-15

申请号：PCT/US2007/000728

申请日：2007-01-11

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： MANN, James, B. ,  SHANKAR, M., Ravi ,  CHANDRASEKAR, Srinivasan ,  COMPTON, Walter, Dale ,  MOSCOSO, Wilfredo

IPC: B23B29/12 ,  B22F1/00 ,  B22F9/00 ,  B22F9/04 ,  C04B35/622 ,  B23B1/00

CPC classification number: B23B29/125 ,  B22F9/04 ,  B22F2009/046 ,  B22F2998/00 ,  B22F2999/00 ,  B23B1/00 ,  G05B2219/37598 ,  Y10S82/904 ,  Y10T82/10 ,  Y10T408/03 ,  Y10T408/23 ,  Y10T409/303808 ,  B22F1/0044 ,  B22F1/0055 ,  B22F1/004 ,  B22F2202/01

Abstract: A method for producing articles containing nanocrystalline microstructures, and particularly to a method of controllably producing nanocrystalline chips with a desired shape and size. The method generally entails machining a body with a cutting tool to produce polycrystalline chips having nanocrystalline microstructures while superimposing modulation on the cutting tool so as to move the cutting tool relative to the body being machined and cause instantaneous and periodic separation between the cutting tool and the body at a point of contact between the cutting tool and the body, wherein each separation between the cutting tool and the body yields a chip. In this manner, the shapes and sizes of the chips are determined at least in part by the modulation cycle, and particularly the length of time the cutting tool is engaged with the body being machined.

Abstract translation: 一种制备含有纳米晶体微结构的制品的方法，特别涉及可控制造具有所需形状和尺寸的纳米晶片的方法。 该方法通常需要用切割工具加工主体以产生具有纳米晶体微结构的多晶片，同时在切割工具上重叠调制，以便相对于被加工的主体移动切割工具，并使切割工具和切割工具之间产生瞬时和周期性的分离 在切割工具和主体之间的接触点处的主体，其中切割工具和主体之间的每个间隔产生芯片。 以这种方式，芯片的形状和尺寸至少部分地由调制周期确定，特别是切割工具与正被加工的主体接合的时间长度。