Effect of Nitrogen on the Dynamic Recrystallization Behaviors of Vanadium and Titanium Microalloyed Steels

• Autorzy: Baochun Z. , Tan Z. , Guiyan L. , Qiang L.

Identyfikatory

DOI

10.24425/118951

• Języki publikacji: EN

Abstrakty

EN

The hot deformation behaviors of vanadium and titanium microalloyed steels containing different nitrogen contents were studied by performing hot compression tests at various temperatures ranging from 900 to 1050°C and strain rates ranging from 0.1 to 10 s^-1. The flow stress curves of the experimental steels were analyzed and the effect of nitrogen on the hot deformation behaviors of the vanadium titanium and nitrogen microalloyed steels was discussed. The results reveal that the flow stress increases with increasing nitrogen addition and the critical strain for the onset of dynamic recrystallization(DRX) also increases by adding nitrogen. Therefore, larger strain should be applied to start DRX in the experimental steel containing higher nitrogen content. The material constants and activation energies for hot deformation were determined by regression method and the effect of nitrogen on the activation energy was also discussed referring to the activation energies from the previous researches. It is found that higher nitrogen content contributes to higher activation energy for hot deformation. Furthermore, the DRX kinetics models for the experimental steels were constructed by regression method and the effect of nitrogen on the DRX rate under various deformation conditions was analyzed. And the inhibition of DRX by increasing nitrogen content is confirmed.

Słowa kluczowe

EN

vanadium titanium and nitrogen microalloyed steels; dynamic recrystallization; effect of nitrogen; critical strain; hot deformation behavior

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 1
• Strony: 379--386
• Opis fizyczny: Bibliogr. 35 poz., rys., tab., wzory

Twórcy

autor

Baochun Z.

• Technology Center of Angang Steel Co., Ltd., Anshan 114009, Liaoning, China

autor

Tan Z.

• Technology Center of Angang Steel Co., Ltd., Anshan 114009, Liaoning, China

autor

Guiyan L.

• Technology Center of Angang Steel Co., Ltd., Anshan 114009, Liaoning, China

autor

Qiang L.

• Angang Steel Co., Ltd., Bayuquan Subsidiary Co., Yingkou 115007, Liaoning, China

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).