TW349126B - High strength steels having excellent formability and high impact energy absorption properties, and a method for producing the same - Google Patents

High strength steels having excellent formability and high impact energy absorption properties, and a method for producing the same

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Publication number
TW349126B
TW349126B TW087101096A TW87101096A TW349126B TW 349126 B TW349126 B TW 349126B TW 087101096 A TW087101096 A TW 087101096A TW 87101096 A TW87101096 A TW 87101096A TW 349126 B TW349126 B TW 349126B
Authority
TW
Taiwan
Prior art keywords
sigma
strain
energy absorption
impact energy
absorption properties
Prior art date
Application number
TW087101096A
Other languages
Chinese (zh)
Inventor
Manabu Takahashi
Akihiro Uenishi
Yukihisa Kuriyama
Riki Okamoto
Yasuharu Sakuma
Osamu Kawano
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP19029797A external-priority patent/JP3530347B2/en
Priority claimed from JP22300597A external-priority patent/JPH1161326A/en
Priority claimed from JP25883497A external-priority patent/JP3530353B2/en
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Application granted granted Critical
Publication of TW349126B publication Critical patent/TW349126B/en

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Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Heat Treatment Of Steel (AREA)

Abstract

A high strength steel having excellent formability and high impact energy absorption properties, which is characterized in that: the steel obtained has the microstructure of mixtures of ferrite and/or bainite with the third component including retained austenite of the volume fraction between 3% and 50%, with the dominating microstructural component of either ferrite or bainite, and the difference between the static tensile strength <sigma>s(Mpa) at 5x10<-4>~10<-3> (1/s) of strain rate after the pre-deformation at a strain more than 0% and less than or equal to 10% of equivalent strain and the dynamic tensile strength <sigma>d(Mpa) at 5x10<2>~5x10<3> (1/s) of strain rate, I.e.; <sigma>d-<sigma>s should be greater than 60MPa, as well as the work hardening coefficient between 5~10% of strain greater than 0.130.
TW087101096A 1997-01-29 1998-01-26 High strength steels having excellent formability and high impact energy absorption properties, and a method for producing the same TW349126B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2829697 1997-01-29
JP19029797A JP3530347B2 (en) 1997-07-15 1997-07-15 How to select a high-strength steel sheet with excellent dynamic deformation characteristics
JP19029897 1997-07-15
JP22300597A JPH1161326A (en) 1997-08-06 1997-08-06 High strength automobile steel plate superior in collision safety and formability, and its manufacture
JP25883497A JP3530353B2 (en) 1997-09-24 1997-09-24 High-strength cold-rolled steel sheet with high dynamic deformation resistance for impact absorption at the time of collision and manufacturing method thereof

Publications (1)

Publication Number Publication Date
TW349126B true TW349126B (en) 1999-01-01

Family

ID=57939799

Family Applications (1)

Application Number Title Priority Date Filing Date
TW087101096A TW349126B (en) 1997-01-29 1998-01-26 High strength steels having excellent formability and high impact energy absorption properties, and a method for producing the same

Country Status (1)

Country Link
TW (1) TW349126B (en)

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