公开(公告)号：US20230407442A1

公开(公告)日：2023-12-21

申请号：US18125173

申请日：2023-03-23

Applicant: University of Science and Technology Beijing

Inventor： You WANG ,  Zhangjian ZHOU

IPC: C22C33/06 ,  C22C33/00 ,  C22C38/34 ,  C22C38/22 ,  C22C38/24 ,  C22C38/00

CPC classification number: C22C33/06 ,  C22C33/006 ,  C22C38/002 ,  C22C38/22 ,  C22C38/24 ,  C22C38/34

Abstract: Disclosed are a high strength-ductility matched oxide-particles dispersion steel, a preparation method and application thereof, belonging to the technical field of novel structural materials. The high strength-ductility matched oxide-particles dispersion steel comprises the following components in percentage by mass: chromium (Cr) 11.0-13.0 percent (%), tungsten (W) 1.0-2.0%, vanadium (V) 0.1-0.2%, yttrium (Y) 0.3-0.4%, oxygen (O) 0.05-0.15%, silicon (Si) 1.5-2.5%, carbon (C)≤0.0016%, with iron (Fe) and unavoidable impurities accounting for a rest. The high strength-ductility matched oxide-particles dispersion steel in the present application is prepared, using a powder metallurgical preparation method, by introducing high-content of silicon elements and introducing high-density oxide particles with a complete core-shell structure using a specific heat treatment regime.