Method for improving mechanical properties of steel plate through thermal forming-subcritical quenching-partitioning technology

Method for improving mechanical properties of steel plate through thermal forming-subcritical quenching-partitioning technology

The invention relates to a method for improving the mechanical properties of a steel plate through a thermal forming-subcritical quenching-partitioning technology. According to the method for improving the mechanical properties of the steel plate through the thermal forming-subcritical quenching-par...

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Hauptverfasser: TU YINGMING, SHI ZIJIE, JING CAINIAN, XING ZHAOHE
Format: Patent
Sprache:chi ; eng
Schlagworte:
CHEMISTRY
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
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creator TU YINGMING
SHI ZIJIE
JING CAINIAN
XING ZHAOHE
description The invention relates to a method for improving the mechanical properties of a steel plate through a thermal forming-subcritical quenching-partitioning technology. According to the method for improving the mechanical properties of the steel plate through the thermal forming-subcritical quenching-partitioning technology, the steel plate is heated to a temperature over Ac3 at a certain rate, and the temperature is kept for a certain time; the steel plate is transferred into a stamping die for hot stamping forming and quenching treatment, the steel plate is quenched to a temperature (QT1) between Ms and Mf, and the temperature is kept for a certain time; the steel plate is reheated to a temperature between Ac1 and Ac3, and the temperature is slightly lower than Ac3 and kept for a certain time; then, the steel plate is rapidly quenched to a temperature (QT2) between Ms and Mf, and the temperature is kept for a certain time; then, the steel plate is reheated to a temperature slightly higher than the Ms, and the te
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subjects CHEMISTRY
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
title Method for improving mechanical properties of steel plate through thermal forming-subcritical quenching-partitioning technology
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