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.