The Microstructure and Phase Composition of 35CrSiMN5-5-4 Steel After Quenching and Partitioning Heat Treatment

• Autorzy: Skołek E. , Wasiak K. , Świątnicki W. A.

Identyfikatory

DOI

10.1515/amm-2016-0274

• Języki publikacji: EN

Abstrakty

EN

The aim of the study was to characterise the microstructure of 35CrSiMn5-5-4 steel which was subjected to a new heat treatment technology of quenching and partitioning (Q&P). The parameters of the treatment were chosen on the basis of computer simulations and dilatometric studies of phase transformations occurring in steel. The transmission electron microscopy (TEM) observations of steel microstructure after the Q&P treatment revealed the presence of martensite as well as significant amount of retained austenite in form of layers between the martensite laths. The rod-like carbides in the ferritic areas were also observed, which indicates the presence of lower bainite in steel. It was found that the retained austenite content measured by means of TEM was about 28% for partitioning at 400°C and 25% for partitioning at 260°C. These results are in good agreement with the phase composition calculated theoretically as well as those determined experimentally by use of dilatometric tests.

Słowa kluczowe

EN

quenching and partitioning treatment; astenitic-martensitic microstructure; dilatometric studies; phase composition

• 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: 2016
• Tom: Vol. 61, iss. 3
• Strony: 1683--1688
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wykr., wzory

Twórcy

autor

Skołek E.

• Warsaw University of Technology, Faculty of Materials Science, 141 Wołoska Str., 02-507 Warsaw, Poland

autor

Wasiak K.

• Warsaw University of Technology, Faculty of Materials Science, 141 Wołoska Str., 02-507 Warsaw, Poland

autor

Świątnicki W. A.

• Warsaw University of Technology, Faculty of Materials Science, 141 Wołoska Str., 02-507 Warsaw, Poland

Bibliografia

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Uwagi

EN

The results presented in uns paper have been obtained within the project "Production of nanocrystalkne steels using phase transformations" - NANOSTAL (contract no. POIG 01.01.02-14-100.09 with the Polish Ministry of Science and Higher Education). The project is co-financed by the European Union from the European Regional Development Fund within Operational Programme Innovative Economy 2007-2013.