Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 2
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

Simulation is used today in many contexts, such as simulating technology to tune or optimize performance, safety engineering, testing, training, education, and entertainment. In some industries, simulations are commonly used, but in heat treatment this is rather an exception. The paper compares the simulation of carburization and nitrocementation of 16MnCr5 steel with a practical application. The aim was to determine the applicability of chemical heat treatment simulation. We were looking for an answer to the question: to what extent can we rely on the technological design of heat treatment? The software designed the heat treatment technology. He drew the technological process of chemical-thermal treatment of 16MnCr5 steel. The thickness of the cementite layer was 1 mm and the nitrocementation 1.2 mm. Changes in mechanical properties were observed. Cementing, nitrocementing, hardness, microhardness, metallography, and spectral analysis were practically performed. This article describes the benefits of simulation, speed and accuracy of the process. The only difference was in determining the carbon potential. The simulation confirmed the practical use and its contribution in the technological process.
Go to article

Bibliography

[1] Atraszkiewicz, R., Januszewicz, B., Kaczmarek, Ł., Stachurski, W., Dybowski, K., Rzepkowski, A. (2012). High pressure gas quenching: Distortion analysis in gears after heat treatment. Materials Science & Engineering A. 558, 550-557.
[2] Mallener, H. (1990). Maß- Und Formänderungen beim Einsatzhärten. Journal of Heat Treatment and Materials. 45(1), 66-72. (in German)
[3] Jurči, P., Stolař, P. (2006). Distortion behavior of gear parts due to carburizing and quenching with different quenching media. BHM Berg - und Hüttenmännische Monatshefte. 151, 437–441. DOI: 10.1007/BF03165203
[4] Rajan, T.V., Sharma, C.P., Sharma, A. (2001). Heat treatment Principles and Techniques. New Delhi.
[5] Farokhzadeh, K., Edrisy A. (2017). Surface Hardening by Gas Nitriding. Materials Science and Materials Engineering. 2, 107-136. https://doi.org/10.1016/B978-0-12-803581-8.09163-3
[6] NITREX. (2021). Simulation software for carburizing, carbonitriding, nitriding, & nitrocarburizing processes. Retrieved September 2021 from https://www.nitrex.com/en/solutions/process-flow-controls/products/production-software/ht-tools-pro-simulator/
[7] EN 10084. 1.7131/1.7139. Cr-Mn-legierter Einsatzstahl. (2011)
[8] Parrish, G. (1999). Carbuzing: Microstructures and Properties. (pp. 55-57). ASM International.
[9] Somers, M., Christiansen, T. (2020). Nitriding of Steels. Encyclopedia of Materials: Metals and Alloys. 2, 173-189. https://doi.org/10.1016/B978-0-12-819726-4.00036-3
[10] Llewellyn, D.T. & Cook, W.T. (1977). Heat-treatment distortion in case-carburizing steels. Metals Technology. 4(1), 265-278. https://doi.org/10.1179/030716977803292385
[11] Bepari M.M.A. (2017). Carburizing: A method of case hardening of steel. Materials Science and Materials Engineering. 2, 71-106. https://doi.org/10.1016/B978-0-12-803581-8.09187-6
[12] Skočovský, P., Bokůvka, O., Konečná, R., Tillová, E. (2014). Materials science. Edis – vydavateľstvo Žilinskej university, 343. ISBN 978-80-554-0871-2. (in Slovak).

Go to article

Authors and Affiliations

E. Kantoríková
1
ORCID: ORCID
P. Fabian
1
M. Sýkorová
1

  1. Department of Technological Engineering, University of Žilina in Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia
Download PDF Download RIS Download Bibtex

Abstract

The paper compares changes in the structure and mechanical properties due to the synergistic effect of alloying elements Zr and Ti. It is assumed that by increasing the content of Zr and Ti in the aluminium alloy, better mechanical properties will be achieved. Paper focuses on description of the differences between the samples casted into the shell mold and the metal mold. Main difference between mentioned molds is a different heat transfer coefficient during pouring, solidification and cooling of the metal in the mold. The main goal was to analyse the influence of Zr and Ti elements and compare the mechanical properties after the heat treatment. Curing and precipitation aging were used during the experiment. The effect of the elements on AlSi7Mg0.3 alloy created differences between the excluded Zr phases after heat treatment. Evaluation of the microstructure pointed to the decomposition of large predominantly needle Zr phases into smaller, more stable formations.
Go to article

Bibliography

[1] Bolibruchová, D., Tillová, E. (2005). Al-Si foundry alloys. Žilina.
[2] Michna, Š., Lukáč, I. (2005). et al. Encyclopedia of aluminum.
[3] Bechný, L. (1990). Foundry metallurgy and technology. ALFA Bratislava.
[4] Bolibruchová, D., Kuriš, M. & Matejka, M. (2019). Effect of Zr on selected properties and porosity of AlSi9Cu1Mg alloy for the purpose of production of high-precision castings. Manufacturing Technology. 19(4), 1213-2489.
[5] Bolibruchova, D., Macko, J. & Bruna, M. (2014). Elimination of negative effect of Fe in secondary alloys AlSi6Cu4 (EN AC 45 000, A 319) by nickel. Archives of Metallurgy and Materials, 59, 717-721
[6] Mahmudi, R., Sepehrband, P. & Ghasemi, H.M. (2006). Improved properties of A319 aluminum casting alloy modified with Zr. Materials Letters. 2606-2610. DOI 10.1016/j.matlet. 2006.01.046
[7] Peng, G., Chen, K., Fang, H. & Chen, S. (2012). A study of nanoscale Al3(Zr,Yb) dispersoids structure and thermal stability in Al–Zr–Yb alloy. Materials Science and Engineering. Volume 535, 311-315.
[8] Sha, G. & Cerezo, A. (2004). Early-stage precipitation in Al−Zn−Mg−Cu alloy (7050). Acta Materialia. 52(15), 4503-4516.
[9] Lü, X., Guo, E., Rometsch, P. & Wang, L. (2012). Effect of one-step and two-step homogenization treatments on distribution of Al3Zr dispersoids in commercial AA7150 aluminium alloy. Transactions of Nonferrous Metals Society of China. 22, 2645-2651. Science Direct.
[10] STN EN 1706. AC–42100. Aluminium alloy for general purpose castings.
[11] Liu, S., Zhang, X.M. & Chen, M.A. & You, J. H. (2008). Influence of aging on quench sensitivity effect of 7055 aluminium alloy. Materials Characterization, 59(1), 53-60.
[12] Pourkia, N., Emamy, M., Farhangi, H. & Seyed, E. (2010). The effect of Ti and Zr elements and cooling rate on the microstructure and tensile properties of a new developed super high-strength aluminium alloy. Materials Science and Engineering A. 527, 5318-5325.
[13] Tillova, E., Chalupova, M. (2009). Structural analysis of Al-Si alloys. Žilina: EDIS ŽU UNIZA.

Go to article

Authors and Affiliations

E. Kantoríková
1
ORCID: ORCID
M. Kuriš
1
R. Pastirčák
1
ORCID: ORCID

  1. Department of Technological Engineering, University of Žilina in Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia

This page uses 'cookies'. Learn more