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Local texture analysis of structure non-uniformity in low carbon high-strength steel after direct quenching
https://doi.org/10.22349/1994-6716-2020-103-3-09-16
Abstract
The direct quenching of high-strength steels after hot rolling, which enables discard of the reheating operation, is economically efficient but necessitates a careful analysis of corresponding structural features. In particular, this treatment sometimes results in extended domains of coarse bainite decreasing the fracture toughness of steel. To reveal dependence of such effects on ausforming conditions, local textures of the parent γ-phase have been reconstructed from EBSD orientation data with allowance for the inter-phase orientation relationship. According to the obtained results, the unfavorable structural non-uniformity appears in the direct quenching due to excessive work hardening of austenite at the finish rolling stage; however, the structure and properties of steel can be improved by the reheating and subsequent quenching.
About the Authors
A. A. Zisman
NRC “Kurchatov Institute” – CRISM “Prometey”; Peter the Great St Petersburg Polytechnic University
Russian Federation
Russian Federation
Dr Sc. (Phys-Math)
49 Shpalernaya St, 191015, St Petersburg
29 Polytekhnicheskaya St, 195251, St Petersburg
N. Yu. Zolotorevsky
Peter the Great St Petersburg Polytechnic University
Russian Federation
Russian Federation
Cand Sc. (Phys-Math)
29 Polytekhnicheskaya St, 195251, St Petersburg
S. N. Petrov
NRC “Kurchatov Institute” – CRISM “Prometey”; Peter the Great St Petersburg Polytechnic University
Russian Federation
Russian Federation
Cand Sc. (Chem)
49 Shpalernaya St, 191015, St Petersburg
29 Polytekhnicheskaya St, 195251, St Petersburg
E. I. Khlusova
NRC “Kurchatov Institute” – CRISM “Prometey”; Peter the Great St Petersburg Polytechnic University
Russian Federation
Russian Federation
Dr Sc. (Eng)
49 Shpalernaya St, 191015, St Petersburg
29 Polytekhnicheskaya St, 195251, St Petersburg
E. A. Yashina
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
49 Shpalernaya St, 191015, St Petersburg
Russian Federation
49 Shpalernaya St, 191015, St Petersburg
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Review
For citations:
Zisman A.A., Zolotorevsky N.Yu., Petrov S.N., Khlusova E.I., Yashina E.A. Local texture analysis of structure non-uniformity in low carbon high-strength steel after direct quenching. Voprosy Materialovedeniya. 2020;(3(103)):9-16. (In Russ.) https://doi.org/10.22349/1994-6716-2020-103-3-09-16
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