Effect of the Austempering Process on the Microstructure and Mechanical Properties of 27MnCrB5-2 Steel

• Autorzy: Morri A. , Ceshini L. , Pellizzari M. , Menapace C. , Vettore F. , Veneri E.

Identyfikatory

DOI

10.1515/amm-2017-0094

• Języki publikacji: EN

Abstrakty

EN

The effect of austempering parameters on the microstructure and mechanical properties of 27MnCrB5-2 steel has been investigated by means of: dilatometric, microstructural and fractographic analyses; tensile and Charpy V-notch (CVN) impact tests at room temperature and a low temperature. Microstructural analyses showed that upper bainite developed at a higher austempering temperature, while a mixed bainiticmartensitic microstructure formed at lower temperatures, with a different amount of bainite and martensite and a different size of bainite sheaf depending on the temperature. Tensile tests highlighted superior yield and tensile strengths (≈30%) for the mixed microstructure, with respect to both fully bainitic and Q&T microstructures, with only a low reduction in elongation to failure (≈10%). Impact tests confirmed that mixed microstructures have higher impact properties, at both room temperature and a low temperature.

Słowa kluczowe

EN

27MnCrB5-2; austempering; microstructure; mechanical properties; low temperature

• 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: 2017
• Tom: Vol. 62, iss. 2A
• Strony: 643--651
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Morri A.

• Department of Industrial Engineering – University of Bologna, Italy

autor

Ceshini L.

• Department of Industrial Engineering – University of Bologna, Italy

autor

Pellizzari M.

• Department of Industrial Engineering – University of Trento, Italy

autor

Menapace C.

• Department of Industrial Engineering – University of Trento, Italy

autor

Vettore F.

• Zanardi Fonderie, Minerbe Vr, Italy

autor

Veneri E.

• Department of Industrial Engineering – University of Trento, Italy

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).