Patent · US Active

Lightweight steel and steel sheet with enhanced elastic modulus, and manufacturing method thereof

US11078554B2 · kind B2 · utility

0Cited by

1References

34Claims

0Family size

Assignee

BAOSHAN IRON & STEEL CO., LTD. · CN

Inventors

Qi Yang · Chengdu, CN
Li WANG · Shanghai, CN

Key dates

Filing date	Mar 30, 2017
Grant date	Aug 3, 2021
Priority date	—
Expiry date	Nov 20, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D2211/005
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

There is disclosed a lightweight steel with an enhanced elastic modulus, wherein the lightweight steel has a chemical composition by mass percentage of 0.001%≤C≤0.30%, 0.05%≤Mn≤4.0%, 1.5%<Al<3.0%, 1.5%≤Ti≤7.0%, 0.5%≤B≤3.6%, and the remainder consisting of Fe and other unavoidable impurities. A microstructure of the lightweight steel comprises a matrix and fine hardening granules evenly distributed throughout the matrix. The matrix entirely or partially comprises a ferrite and/or a bainite. The hardening granule comprises at least TiB2.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.