High-performance reality of 55SiCrV spring steel processed by the rapid-induction heat treatment

Qilei Daia College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, People’s Republic of China;b Hwaway Technology Co., Ltd., Zhuji, People’s Republic of China

Lei Jinb Hwaway Technology Co., Ltd., Zhuji, People’s Republic of China

Wen Chena College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, People’s Republic of China;c State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, People’s Republic of China

Jingzhou Wud Chongqing Chengzhipeng Technology Co., Ltd., ChongqingPeople’s Republic of China

Zhou Fangb Hwaway Technology Co., Ltd., Zhuji, People’s Republic of China

Tianbao Yanga College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, People’s Republic of China;c State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, People’s Republic of China

Ruijin Maa College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, People’s Republic of China;c State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, People’s Republic of China

Kun Lia College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, People’s Republic of China;c State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, People’s Republic of China;e Chongqing Key Laboratory of Metal Additive Manufacturing (3D Printing), Chongqing, University, Chongqing, People’s Republic of ChinaCorrespondence[email protected]

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Abstract

Heat treatment methodology is vital to achieve high performance of advanced spring steel. The present study has investigated the microstructure and mechanical properties of the 55SiCrV spring steel processed by a novel online rapid-induction heat treatment. The results showed that rapid heating refines the prior austenite grain size of the 55SiCrV spring steel, and the vanadium mainly exists as the solid solution in the matrix instead of the dispersive precipitation of the V-containing secondary phase under the rapid induction heat treatment condition. An optimal combination of mechanical properties simultaneously with ultrahigh strength and high plasticity was obtained and the properties of the steel are mainly enhanced by the hardenability and tempering resistance of solute V in the material.

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High-performance reality of 55SiCrV spring steel processed by the rapid-induction heat treatment

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High-performance reality of 55SiCrV spring steel processed by the rapid-induction heat treatment

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