The influence of solution annealing on microstructure and mechanical properties heat-resistant cast Steel HK30 modified by Niobium
DOI:
https://doi.org/10.30544/430Keywords:
heat-resistant cast steel, solution annealing, mechanical properties, carbideAbstract
In this paper, the room temperature mechanical properties, as well as the microstructure of HK 30 Nb steel, were tested in the initial as-cast and solution annealed condition. Results show that tensile properties after the solution annealing have a slightly lower value than as-cast samples. Microstructural analysis of samples after solution annealing showed dissolution of primary carbides present in the initial as-cast condition. The morphology and composition of carbides were changed during a solution annealing. Analysis of microstructure was done by optical microscopy (OM) and scanning electron microscope (SEM), whereas hardness and tensile tests were performed for characterization of mechanical properties.
References
ASM Handbook: Properties and Selection: Irons, Steels, and High Performance Alloys, Volume 1, (Cast Stainless Steels, Revised by Malcolm Blair), 1990, p.2195
Handbook, Steel Castings. "Supplement 9. High Alloy Data Sheets. Heat Series." Ohio: Steel Founder's Society of America (2004) p. 28.
B. Piekarski, J. Kubicki: Arch Foundry Eng, 8 (2008) 115-120.
George E. Totten, STEEL HEAT TREATMENT HANDBOOK, Second Edition, Portland, Oregon, U.S.A., 2004, p.718
F. Silva, J. Santos, R. Gouveia: Metals, 7 (2017): 251.
Designation: A 351/A 351M - 03, Standard Specification for Castings, Austenitic, Austenitic-Ferritic (Duplex), for Pressure-Containing Parts, ASTM International, 2003, p.3
Standard BAS EN ISO 6892-2: 2012
EUROPEAN STANDARD EN 10295:" Heat resistant steel casting", October 2002, p.10
Honeywell, IDM standard 8365: "CAST HEAT RESISTANT Nb MODIFIED HK-30 STAINLESS STEEL", 2012, p.4
A.Delić: "Research of relations between the microstructure and the properties of the heat resistant austenitic steel HK30 modified by niobium in order to improve the properties at elevated temperatures", Doctoral dissertation, Faculty of Metallurgy and Technology, University of Zenica, 2018, 64-88.
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Copyright (c) 2019 Alen Delić, Mirsada OruÄ, Milenko Rimac, Almaida Gigović-Gekić, Raza Sunulahpašić

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