Effects of Alloying Elements and Temperature on Thermodynamic State and Microstructure of Piston Aluminum Alloy

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Taking high power density M142 piston aluminum alloy as the main research object, this paper studies the changes of element contents such as Si, Fe and Cu, as well as the effects on the precipitation strengthening phase sequence, type and phase transformation. Based on the phase diagram and thermodynamic calculation results of multicomponent alloys between different elements, the phase transformation in the solidification process of the alloy, as well as the temperature and composition window of each phase transformation were studied. Especially in alloys ε Phase (Al3Ni), δ Phase (Al3CuNi), and γ phase (Al7Cu4Ni). The thermodynamic conditions for the formation of nickel rich heat-resistant phases. At the same time, the effects of the contents of Cu, Fe and other elements on the solidification structure were studied. The optimum composition, temperature, pressure and other process parameters of the alloy were optimized. At the same time, it is analyzed and verified in combination with relevant metallographic photos to deeply understand and master the composition design and preparation process of the alloy.

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June 2022

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[1] M.M. Haque, A. Sharif Study on wear properties of aluminium-silicon piston alloy. J. Mater. Process. Technol. 118 (2001):69-73.

DOI: 10.1016/s0924-0136(01)00869-x

Google Scholar

[2] N.A. Belov, D.G. Constituent phase diagrams of the A1-Cu-Fe-Mg-Ni-Si system and their application to the analysis of aluminium piston alloys. Acta Mater. 53 (2005): 4709-4722.

DOI: 10.1016/j.actamat.2005.07.003

Google Scholar

[3] X.F. Liu, J.G. Qiao, Y.Y. Wu, et al. EPMA analysis of calcium-rich compounds in near eutectic. A1-Si alloys. J. Alloys Compd. 388 (2005): 83-90.

DOI: 10.1016/j.jallcom.2004.07.012

Google Scholar

[4] M.R. Joyce, C.M. Styles, P.A.S. Reed. Elevated temperature short crack fatigue behaviour in near eutectic A1-Si alloys. Int. J. Fatigue 25 (2003): 863-869.

DOI: 10.1016/s0142-1123(03)00157-9

Google Scholar

[5] Z. Qian, X.F. Liu, D.G. Zhao. Effects of trace Mn addition on the elevated temperature tensile strength and microstructure of a low-iron Al-Si piston alloy. Mater. Lett. 62 (2008): 2146-2149.

DOI: 10.1016/j.matlet.2007.11.035

Google Scholar

[6] A. Saccone, G. Cacciamani, D. Maccio', G. Borzone, R. Ferro. Contribution to the study of the alloys and intermetallic compounds of aluminium with the rare-earth metals. Intermetallics 6 (1998): 201-215.

DOI: 10.1016/s0966-9795(97)00066-6

Google Scholar