Influence of the Selected Factors on Thermal Fatigue of the ADI in an Aspect of its Suitability as the Material for Metal Moulds

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Abstract

The investigation results of the thermal fatigue resistance of two ADI grades (EN-GJS-1200-2 and EN-GJS-800-8) are presented in the paper. Tests were performed on the author’s research stand, by means of the resistance heating of samples acc. L.F. Coffin method. The thermal fatigue resistance is the basic criterion in assessing the material suitability for metal moulds. The maximal temperature (Tmax) of thermal cycles influence on their number, which the sample can withstand before cracking, were estimated. Structure transformations, hardness and strength changes of the austempered ductile iron (ADI) were analysed. It was found, that at cyclic heating to Tmax <500°C, the ADI retains its primary ausferritic structure, even after more than 10.000 thermal cycles. Such ADI behaviour predisposes it to be applied as a material for metal moulds used in the pressure die casting, it means mainly at casting Mg and Zn alloys as well as for small castings of Al alloys.

[1] D. Myszka, M. Kaczorowski, J. Tybulczu k, Publisher of Foundry Research Institute, Krakow (2003).

[2] The collective work, The technology development of ADI in Poland. Foundry Research Institute, Krakow 2009.

[3] E. Guzik, Some selected problems concerning the process of cast iron improvement. Archives of Foundry Engineering, Monograph 1, Katowice 2001.

[4] J. Tybulczuk, A. Kowalski, ADI. Foundry Research Institute, Krakow 2003.

[5] J. Zych, Archives of Metallurgy and Materials 58 (3), 757 (2013).

[6] A. Weronski, Thermal fatigue of metals, WNT, Warszawa 1983.

[7] B. Nogovizin, G. Friebe, Giessereiforschung 2, 1 (2002).

[8] J. Zych, Metalurgia PAN, Katowice 38, 107 (1988).

[9] J. Zych, D. Jedrzejczyk, Przeglad Odlewnictwa 6, 215 (1991).

[10] J. Wróbel, The resistance to thermal fatigue of ADI. PhD thesis. UST-AGH Krakow (2013).

[11] J. Zych, J. Wróbel, Przeglad Odlewnictwa 5, 214 (2011).

[12] J. Zych, IX Symposium on the occasion of Foundryman Days, AGH Krakow (1983).

[13] L.F. Coffin, R.P. Wesley, Trans. of ASME 76, 923 (1954).

[14] J. Zych, J. Wróbel, Giessereipraxis 10, 476 (2011).

[15] J. Zych, J. Wróbel, Archives of Foundry Engineering 12, 205 (2012).

[16] J. Zych, J. Wróbel, Archives of Foundry Engineering 10, 2 (2010).

[17] J. Zych, Solidification of Metals and Alloys 24, 135 (1995)

[18] A. Weronski, T. Hejwowski, The problem of sustainability components working at elevated temperatures. Publisher Lublin University of Technology, 1993.

Archives of Metallurgy and Materials

The Journal of Institute of Metallurgy and Materials Science and Commitee on Metallurgy of Polish Academy of Sciences

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