Ultrahigh-strength ultrahigh-toughness and low-density dual-phase lamellar steel plate and preparation method therefor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11427878
SERIAL NO

16897950

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An ultrahigh-strength ultrahigh-toughness and low-density dual-phase lamellar steel plate is disclosed. The steel plate comprises the following alloy components in percentage by mass: 0.200-0.320% of C, 0.600-2.000% of Mn, 0.200-0.600% of Si, 2.000-4.000% of Al, 0.300-1.200% of Ni, 0.001-0.005% of B, P not greater than 0.012%, S not greater than 0.005%, and the balance of Fe and inevitable impurities. The steel plate consists of dual phases of ferrites and martensites, the ferrites are high-temperature delta ferrites, the martensites are lath martensites, the delta ferrites are distributed in the lath martensites in a lamellar mode. The steel plate has excellent mechanical properties, for example, the yield strength in the rolling direction is not less than 1000 MPa, the tensile strength is not less than 1600 MPa, the elongation is not less than 8.0%, and the average value of Charpy V-Notch impact energy at −40° C. is not less than 350J.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
NORTHEASTERN UNIVERSITY110819 NO 3 LANE HEPING ROAD HEPING DISTRICT SHENYANG LIAONING 11 SHENYANG CITY LIAONING PROVINCE 110819

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Deng, Xiangtao Shenyang, CN 3 0
Fu, Tianliang Shenyang, CN 18 32
Li, Jiadong Shenyang, CN 10 21
Tian, Yong Shenyang, CN 110 370
Wang, Zhaodong Shenyang, CN 16 39
Wu, Hao Shenyang, CN 930 3100

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Feb 28, 2026
7.5 Year Payment $3600.00 $1800.00 $900.00 Feb 28, 2030
11.5 Year Payment $7400.00 $3700.00 $1850.00 Feb 28, 2034
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00