Influence of Pre-heat Treatment on Mechanical Properties of Austempered Ductile Cast Iron

• Autorzy: Nawrocki P. , Wasiluk K. , Łukasik K. , Myszka D.

Identyfikatory

DOI

10.24425/118833

• Języki publikacji: EN

Abstrakty

EN

The paper presents the effect of pre-heat treatment on the mechanical properties of ductile cast iron with elevated content of Cu and Mo elements. Austempered Ductile Iron is a material with non-standard properties, combining high tensile strength and abrasion resistance with very good plasticity. In addition, it is prone to strain hardening and have good machining abilities. The study was conducted for five designed heat treatment cycles. The variables were the time and temperature of the pre-heat treatment, followed by one of two standard heat treatments for ADI cast iron. The aim of the authors was fragmentation of the grains of perlite during the initial heat treatment. It is presumed, that subsequent heat treatment will cause further refinement of the microstructure than would be the case without initial heat treatment. Diffusion is much faster than in case of ferritic matrix of cast iron. The results will be used to evaluate material for the production of parts of equipment that must operate under extreme load conditions.

Słowa kluczowe

EN

ausferritic ductile iron; heat treatment; dilatometric studies; JMatPro; CCT and TTT diagrams

PL

żeliwo sferoidalne; obróbka cieplna; badania dylatometryczne; program JMatPro

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 1
• Strony: 176--180
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr.

Twórcy

autor

Nawrocki P.

• Warsaw University of Technology, Department of Metal Forming and Foundry, Warsaw, Poland

autor

Wasiluk K.

• Warsaw University of Technology, Faculty of Materials Science and Engineering, Warsaw , Poland

autor

Łukasik K.

• Warsaw University of Technology, Department of Metal Forming and Foundry, Warsaw, Poland

autor

Myszka D.

• Warsaw University of Technology, Department of Metal Forming and Foundry, Warsaw, Poland

Bibliografia

• [1] Kobayashi, T. & Yamada, S. (1996). Effect of holding time in the (α+γ) temperature range on toughness of specially austempered ductile iron. Metallurgical and Materials Transactions A. 27(7), 1961-1971. DOI: 10.1007/ BF02651945.
• [2] Putatunda, S.K., Panneerselvam, S. Alshwigi, M. (2015). Development of nanostructured austempered ductile cast iron (ADI). Procedings of the 28th ASM heat treating society conference. 29-22 October 2015 (pp. 71-75). Detroit-United States: ASM International.
• [3] Myszka D. (2014). Technological aspects of deformation-induced transformation in austempered ductile iron. Warsaw: Oficyna Wydawnicza Politechniki Warszawskiej (in Polish).
• [4] Bayyati, H. & Eliott, R. (1997). Stepped austempering heat treatment of a 0.67%Mn-Mo-Cu ductile iron. Materials Science and Technology. 13(2), 117-124. DOI: 10.1179/mst.1997.13.2.117.
• [5] Putatunda, S.K. (2001). Development of austempered ductile cast iron (ADI) with simultaneous high yield strength and fracture toughness by a novel two-step austempering process. Materials Science and Engineering A. 315(1-2), 70-80. DOI: 10.1016/S0921-5093(01)01210-2.
• [6] Yang, J. & Putatunda, S.K. (2004). Improvement in strength and toughness of austempered ductile cast iron by a novel two-step austempering process. Materials and Design. 25(3), 19-230. DOI: 10.1016/j.matdes.2003.09.021.
• [7] Nawrocki, P., Kochański A. & Myszka, D. (2016). Statistical assessment of the impact of elevated contents of Cu and Ni on the properties of austempered ductile iron. Archives of metallurgy and material. 61(4), 2147-2150. DOI: 10.1515/amm-2016-0342.

Uwagi

PL

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