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Microstructure and hardness of hot-rolled structural chromium steel after various types of spheroidizing annealing
https://doi.org/10.22349/1994-6716-2025-122-2-26-34
Abstract
The paper presents the comparable study of changes in hardness and microstructure of the 0.35Cr hot rolled chromium steel after isothermal and cycle annealing. After conducting the experiment, temperature modes of such annealing have been provided to meet additional requirements to hardness and depth of the decarburized layer according to National Standard GOST 4543–71. The advantage of the developed cycle annealing with soaking above the Ас3 critical point in terms of temperature-and-rate conditions of cooling at the final cycle for formation of the uniform structure of granular pearlite and spheroidization of the carbide phase along the entire area of studied samples is demonstrated.
About the Authors
I. D. Pospelov
ФГБОУ ВО «Череповецкий государственный университет»
Russian Federation
Russian Federation
Cand Sc. (Eng)
D. V. Matveeva
ФГБОУ ВО «Череповецкий государственный университет»
Russian Federation
Russian Federation
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For citations:
Pospelov I.D., Matveeva D.V. Microstructure and hardness of hot-rolled structural chromium steel after various types of spheroidizing annealing. Voprosy Materialovedeniya. 2025;(2(122)):26-34. (In Russ.) https://doi.org/10.22349/1994-6716-2025-122-2-26-34
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