Ti-Zr composite microalloyed 700MPa-grade high-strength and high-toughness steel plate and preparation method thereof
The invention discloses a Ti-Zr composite microalloyed 700MPa-grade high-strength and high-toughness steel plate and a preparation method, and belongs to the technical field of high-strength and high-toughness steel plates. The steel plate comprises the following chemical components in percentage by...
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| creator | ZHOU XIAOLONG WANG JUNCAI LUO HANYU CAO JIANCHUN ZHANG FANLIN YANG LISHENG YONG QILONG YIN SHUBIAO |
| description | The invention discloses a Ti-Zr composite microalloyed 700MPa-grade high-strength and high-toughness steel plate and a preparation method, and belongs to the technical field of high-strength and high-toughness steel plates. The steel plate comprises the following chemical components in percentage by mass: 0.02 to 0.05 weight percent of C, 0.20 to 0.30 weight percent of Si, 1.45 to 1.80 weight percent of Mn, less than or equal to 0.005 weight percent of P, less than or equal to 0.005 weight percent of S, 0.10 to 0.20 weight percent of Ti, 0.01 to 0.07 weight percent of Zr and the balance of Fe and inevitable impurities. Wherein the ratio of Ti to Zr is (10: 7)-(20: 1), and the ratio of Ti to Zr is 0.11-0.27 wt.%. Through design of alloy components, optimization of a controlled rolling and controlled cooling technology and control of phase composition of the steel plate, high strength, high toughness and low yield ratio are achieved, and the requirements for steel in the fields of engineering machinery, heavy-l |
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The steel plate comprises the following chemical components in percentage by mass: 0.02 to 0.05 weight percent of C, 0.20 to 0.30 weight percent of Si, 1.45 to 1.80 weight percent of Mn, less than or equal to 0.005 weight percent of P, less than or equal to 0.005 weight percent of S, 0.10 to 0.20 weight percent of Ti, 0.01 to 0.07 weight percent of Zr and the balance of Fe and inevitable impurities. Wherein the ratio of Ti to Zr is (10: 7)-(20: 1), and the ratio of Ti to Zr is 0.11-0.27 wt.%. 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| subjects | ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS 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 TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | Ti-Zr composite microalloyed 700MPa-grade high-strength and high-toughness steel plate and preparation method thereof |
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