The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2023
Filed:
Sep. 29, 2019
Institute of Metal Research Chinese Academy of Sciences, Liaoning, CN;
Dianzhong Li, Liaoning, CN;
Yikun Luan, Liaoning, CN;
Pei Wang, Liaoning, CN;
Xiaoqiang Hu, Liaoning, CN;
Paixian Fu, Liaoning, CN;
Hongwei Liu, Liaoning, CN;
Lijun Xia, Liaoning, CN;
Chaoyun Yang, Liaoning, CN;
Hanghang Liu, Liaoning, CN;
Hang Liu, Liaoning, CN;
Yiyi Li, Liaoning, CN;
INSTITUTE OF METAL RESEARCH CHINESE ACADEMY OF SCIENCES, Shenyang, CN;
Abstract
Provided in the present application are a rare-earth microalloyed steel and a control process. The steel has a special microstructure, and the microstructure comprises a rare earth-rich nanocluster having a diameter of 1-50 nm. The nanocluster has the same crystal structure type as a matrix. The rare earth-rich nanocluster inhibits the segregation of the elements S, P and As on a grain boundary, and obviously improves the fatigue life of the steel. In addition, a rare-earth solid solution also directly affects a phase change dynamics process so that the diffusion-type phase change starting temperature in the steel changes at least to 2° C., and even changes to 40-60° C. in some kinds of steel, thereby greatly improving the mechanical properties thereof, and providing a foundation for the development of more kinds of high-performance steel.