Soft Annealing Technology of High Chromium White Cast Iron for Machinability
Main Article Content
Abstract
The objective of the present work is to establish the heat treating parameters necessary to impose high chromium white cast iron a lower range of hardness, acceptable to guarantee a reasonable machinability of the material. Samples are soft annealing under different conditions by a resistor furnace. Evaluation of the phase transformations during soft annealing was carried out by using optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and microhardness tester. The results of this study have shown that soft annealing of high chromium white cast iron can be done by controlling the distribution of secondary chromium carbide on ferrite matrix.
Keywords
high chromium white cast iron, soft annealing, metal processing
Article Details
References
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[9] P. Amorim, H. Santos, J. Santos, S. Coimbra, C. Sá; Soft Annealing of High Chromium White Cast Iron; Materials Science Forum, Vols. 455-456 (2004), pp. 290-294.
[2] S. Imurai, Ch. Thanachayanont, J.T.h. Pearce, T. Chairungurat; Microstructure and erosion-corrosion behaviour of as-cast high chromium white irons containing molybdenum in aqueous sulfuric-acid slurry; Archives of Metallurgy and Materials, Volume 60, Issue 2, pp. 919-923.
[3] Mirjana Filipovic, Zeljko Kamberovic, Marija Korac; Solidification of High Chromium White Cast Iron Alloyed with Vanadium; Materials Transactions, Vol. 52, No. 3 (2011), pp. 386-390.
[4] Studnicki, J. Kilarski, M. Przybyl, J. Suhocoń, D. Bartoch; Wear resistance of chromium cast iron – research and application; Journal of Achievements in Materials and Manufacturing Engineering, Volume 16, Issue 1-2, May-June 2006, pp. 63-73.
[5] Zhang Zhiguo, Yang Chengkai, Zhang Peng, Li Wei; Microstructure and wear resistance of high chromium cast iron containing niobium; Research & Development, China Foundry, Vol. 11, No. 3, May 2015, pp. 179-184.
[6] D. Kopyciński, E. Guzik, D. Siekaniec, A. Szczęsny; Analysis of the High Chromium Cast Iron Microstructure after the Heat Treatment; Archives of Foundry Engineering, Vol. 14, Issue 3/2014, pp. 43-46.
[7] E. Zumelzu, O. Ortiz, C. Cabezas; High-chromium (22-34 percent) Cast Iron Alloys and Their Simulated Behaviour at the Sugar Industry; Journal of Scientific & Industrial Research, Vol. 62, June 2003, pp. 583-588.
[8] E. Karantzalis, A. Lekatou, H. Mavros; Microstructure and properties of high chromium cast irons: effect of heat treatments and alloying additions; International Journal of Cast Metals Research, Vol. 22, No. 6, pp. 448-456.
[9] P. Amorim, H. Santos, J. Santos, S. Coimbra, C. Sá; Soft Annealing of High Chromium White Cast Iron; Materials Science Forum, Vols. 455-456 (2004), pp. 290-294.