The Effect of the Heat Flux Density on Microstructure of Surface Remeltings on C355 Alloy Castings

• Autorzy: Orłowicz A. W. , Mróz M. , Tupaj M. , Trytek A. , Jacek M. , Radoń M.

Identyfikatory

DOI

10.24425/122499

• Języki publikacji: EN

Abstrakty

EN

The paper presents results of a study on the effect of the flux density of heat carried away for the remelting area to substrate in the course of surface remelting with concentrated heat stream on values of structural parameters λ_1D and λ_2D of α(Al) phase dendrites in C355 alloy. The remeltings were made with the use of GTAW method, at arc current intensity I = 200 A and concentrated heat stream scanning speed v_s = 200, 400, 600, and 800 mm/min. The used protective gas was argon supplied at rate of 20 l/min. It has been found that the increase of the rate of scanning with concentrated heat stream results in a change of the remelting-substrate separation surface shape consisting in reduction of the remelting width and depth. This increases the value of the flux density of heat transmitted from the remelting area to substrate which in turn acts in favor of reduction of structural parameters λ_1D and λ_2D characterizing α(Al) phase dendrites in C355 alloy.

Słowa kluczowe

EN

C355 alloy; surface remelting; concentrated heat stream; surface microstructure

PL

stop C355; utwardzanie powierzchniowe; strumień ciepła; mikrostruktura powierzchni

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 2
• Strony: 35--38
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Orłowicz A. W.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Mróz M.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Tupaj M.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Trytek A.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Jacek M.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Radoń M.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

Bibliografia

• [1] Flemings, M.C. (1974). Solidification process. New York: McGraw Hill, 341-344.
• [2] Zhang, B., Poirier, D.R. & Chen, W. (1999). Microstructural effect on high-cycle-fatiguecrack initiation in A356.2 casting alloy. Metallurgical and Materials Transactions A. 30A, 2659-2666.
• [3] Pocica-Filipowicz, A., Suchy, J. & Nowak, A. (1994). Changes in grey cast iron brought about by surface treatment using a weld method. Cast Metals. 7(3), 129-134.
• [4] Tomida, S., Nakata, K., Shibata, S., Zenkoui, J. & Sai, S. (2003). Improvement in wear resistance of hypereutectic Al-Si cast alloy by laser surface remelting. Surface and Coating Technology. 169-170, 468-471.
• [5] Hyoung-Keun, Lee (2017). Laser cladding with Al-36%Si powder paste on A319 Al alloy surface to improve wear resistance. Journal of Welding and Joining. 35(2), 58-62.
• [6] Orłowicz, A.W. et al. (2012). Patent No. 211283. Warsaw. Polish Patent Office.
• [7] Hunt, J. (1984). Steady state colummar and equiaxed growth of dendrites and eutectic. Mat. Sci. Eng. A65, 75-83.
• [8] Cáceres, C.H. & Wang, Q.G. (1996). Solidification conditions, heat treatment and the tensile ductility of Al-7Si-0.4Mg casting alloys. AFS Trans. 104, 1039-1043.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).