Study of Secondary Phase Particle Dissolution and Austenite Grain Growth on Heating Fine-Grained High-Strength IF-Steel


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Аннотация

Dissolution of particles of second phase and growth of austenite grains in high-strength fine-grained IF-steel (0.0057% C, 0.0023% N) on heating is studied. Metallographic analysis of flat steel specimens cut from plates prepared by hot and cold rolling is performed. Steel structure is studied after holding for 10 – 60 min at different temperatures and water quenching. The quenching parameters at which the microalloying elements (Ti, Nb) dissolve completely with retention of fine-grained austenite are determined. Amathematical model of austenite grain growth is developed by nonlinear regression analysis of experimental data.

Авторлар туралы

Hong-bin Jia

Liaoning Key Laboratory of Material Formation and Microstructure Property Control, University of Science and Technology Liaoning

Хат алмасуға жауапты Автор.
Email: 342434251@qq.com
ҚХР, Anshan

Hong-mei Zhang

Liaoning Key Laboratory of Material Formation and Microstructure Property Control, University of Science and Technology Liaoning

Email: 342434251@qq.com
ҚХР, Anshan

Cheng-qian Sun

Ansteel Group Iron and Steel Research Institute

Email: 342434251@qq.com
ҚХР, Anshan

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