Mechanical Resistance as a Function of Local Properties

  • George CHIRITA Minho University, Portugal
  • Ioan STEFANESCU "Dunarea de Jos" University of Galati, Romania
  • Delfim SOARES Minho University, Portugal
  • Filipe SILVA Minho University, Portugal
Keywords: Metallurgical properties, Mechanical properties, Fatigue life

Abstract

The present study makes an estimation of an automotive engine piston mechanical properties and fatigue life based on some characteristics of metallurgical microstructure. Because it is intended to assess the properties in specific locations of the component it is made a local microstructure approach. The critical points of the engine piston were metallurgical analyzed (amount of phases and SDAS) and these were related to ultimate tensile strength and fatigue life.
The conclusion of the work is that in an engine piston the mechanical and fatigue properties are very dependent of local metallurgical properties (amount of the eutectic phase). As a consequence the component may fail in an unexpected area that may change the local assessment expected results.

Creative Commons License

Downloads

Download data is not yet available.

References

[1]. Bernsztejn, L., Zajmowskij, W.A., Struktura i własnos´ci mechaniczne metali (Structure and Mechanical Properties of Metals), Wyd. Naukowo-Techniczne, 1973, Warsaw.
[2]. Chirita, G., Stefanescu, I., Cruz, D., Soares, D., Silva, F.S, Centrifugal effect on aluminium castings mechanical properties, Materials and Design, in press., 2007.
[3]. Goulart, P.R., Spinelli, J.E., Osorio, W.R., Garcia, A Mechanical properties as a function of microstructure and solidification thermal variables of Al-Si castings, Materials Science and Engineering A , 2006,421, p. 245-253.
[4]. Han, S.W., Kumai, S., Sato, A., Effects of solidification structure on short fatigue crack growth in Al-7%Si-0,4%Mg alloy casting, Materials Science and Engineering, 2002, A332, p. 56-63.
[5]. Haque, M.M., Maleque, M.A., Effect of proces variables on structure and properties of aluminum-silicon alloy, Journal of Materials Processing Technology 77, 1998, p.122-128.
[6]. Haque, M.M., Sharif, A., Study on wear properties of aluminum-silicon piston alloy, Journal of Materials Processing Technology 118, 2001, p. 69-73.
[7]. Mandal, P., Saha, A., Chakraborty, M., Size of primary silicon particles and mechanical properties of as-cast high Silicon Al alloys, AFS Trans. 1991, p. 99, 33.
[8]. Nikanorov, S.P., Volkov, M.P., Gurin, V.N., Burenkov, Yu. A., Derkachenko, L.I., Kardashev, B.K., Regel, L.L., Wilcox, W.R., Structural and mechanical properties of Al-Si alloys obtained by fast cooling of a levitated melt, Materials Science and Engineering 2005, A 390, p. 63-69.
[9]. Shabestari, S.G., Moemeni, H., Effect of copper and solidification conditions on the microstructure and mechanical properties of Al-Si-Mg alloys, Journal of Materials Processing Technology, 153-154, 2004, p. 193-198.
[10]. Takahashi, T., Sugimura, Y., Sasaki, K., Thermal plastic-elastic analysis in consideration of metallurgical microstructure, Journal of Manufacturing Science and Engineering, 2004, vol. 126, p. 25-32.
[11]. Wang, Q.G., Micro structural effect on the tensile and fracture behaviour of aluminium casting alloy A 356/357”, Metallurgical and Materials Transaction, 2003, Vol. 34 A, December, p. 2887-2899.
Published
2007-11-15
How to Cite
1.
CHIRITA G, STEFANESCU I, SOARES D, SILVA F. Mechanical Resistance as a Function of Local Properties. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Nov.2007 [cited 29Mar.2024];30(2):29-3. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/3144
Section
Articles