February 2016, Vol. 16, No. 1 MANUFACTURING TECHNOLOGY ISSN 1213–2489 66 indexed on: http://www.scopus.com Dilatometric Measurements of Austenitic Stainless Steel as a Function of Temperature Monika Oravcová 1 , Peter Palček 1 , Máriusz Król 2 1 University of Žilina, Faculty of Mechanical Engineering, Department of Materials Engineering, Univerzitná 1, 01026 Žilina, Slovakia. E-mail: monika.oravcova@fstroj.uniza.sk, peter.palcek@fstroj.uniza.sk 2 Institute of Engineering Materials and Biomaterials, Faculty of Mechanical Enginering, Konarskiego 18A Stret, 44-100 Gliwice, Poland. E-mail: mariusz.krol@polsl.pl Many solid materials are subjected to structural changes, e.g. phase transformations within temperature change. These phase transformations are usually accompanied by a significant change in particular volume. The change in volume of a solid material is measured by the corresponding change in length of a specimen of the material. The experimental method which is based on measurement of volume/ length change during linear heating or cooling is dilatometry. Dilatometry is characterised by the linear thermal expansion coefficient which can be described as the relative length- change divided by the corresponding temperature interval. The basis of the thermal expansion of crystalline material is related with the function between interatomic forces in crystal lattice. This paper inves- tigates the effect of temperature on structural changes within austenitic stainless steel that underwent different heat treatment before the measurement. Keywords: Austenitic stainless steel, Dilatometry, Temperature dependance, Thermal expansion coefficient Acknowledgement This work has been supported by Scientific Grant Agency of Ministry of Education of Slovak republic VEGA 1/0683/15 and project APVV SK-CZ-2013-0076. References RASHID, M.W.A., GAKIM, M., ROSLI, Z. M., AZAM, M. A. (2012). Formation of Cr23C6 during the sensiti- zation of AISI 304 stainless steel and its effect to pitting corrosion, International Journal of Electrochemical Science, ESG, s. 9465-9477. LIMA, A. S., NASCIMENTO, A. M., ABREU, H. F. G., LIMA-NETO, P. (2005). Sensitization evaluation of the stainless steel AISI 304L, 316L, 321 and 347, Journal of Materials Science, volume 40, s. 139 - 144. KHATAK, H.S., RAJ, B. (2002). Corrosion of austenitic stainless steels mechanism, mitigation and monitoring, Woodhead Publishing Limited, Abington Hall, England, s. 117- 130. ČÍHAL, V. (1984). Mezikrystalová koroze ocelí a slitin, Praha: SNTL. McGUIRE, M. F. (2008). Austenitic Stainless Steels, Stainless Steels for Design Engineers, ASM International), s. 69 – 90. PORTER, W. D. (1993). Thermal expansion data on several iron- and nickel-aluminide alloys, Scripta Metallur- gica et Materialia, USA. KANAGARAJ, S., PATTANAYAK, S. (2003). Measurement of the thermal expansion of metal and FRPs, Cry- ogenics, volume 43, issue 7, s. 399 – 424. ŠVEC, M., MACAJOVÁ, E. (2015). Coefficient Thermal Expansion of Fe3Al and FeAl – type iron aluminides, Manufacturing Technology, volume 13, issue 3, Czech Republic, s. 399 - 404. MATULA, M., et al. (2001). Intergranular corrosion of AISI 316L steel, Materials Characterization, volume 46, issues 2-3, s. 203 - 210. CHRISTIEN, F., TELLING, M.T.F., KNIGHT, K.S. (2013). A comparison of dilatometry and in-situ neutron diffraction in tracking bulk phase transformations in a martensitic stainless steel, Materials Characterization, vo- lume 82, s. 50 – 57. DONG-WOO, S., CHANG-SEOK, O., HEUNG, N. H., SUNG-JOON, K. (2007). Dilatometric Analysis of Phase Fraction during Austenite Decomposition into Banded Microstructure in Low-Carbon Steel, Metallurgical & Ma- terials Transactions, volume 38, issue 12, s. 2963 – 2973. Paper number: M201647 Copyright © 2016. Published by Manufacturing Technology. All rights reserved.