Roughness and microstructure of the AMPCO 45 complex alloyed bronze eroded through cavitation

• Autorzy: Oanca O.V. , Bordeasu I. , Mitelea I. , Craciunescu C.M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Paper analyses the influence between the ultrasonic cavitation erosion and the surface roughness of the complex alloyed bronze AMPCO 45 in two states: extruded and heat treated (quenched) and afterward hardened through dispersion. Design/methodology/approach: The cavitation erosion was obtained in a laboratory facility which respects integrally the indication of the ASTM G-32 Standard. Roughens profile measurements of the eroded surfaces were done with the Mitutoyo device. Findings: Supplementary, were realized scan electronic microscopy which show that the cavitation erosion begins at the interface of the two structural constituents and ends with grains expulsion from the α solid solution. Research limitations/implications: Research carried out in the Cavitation Laboratory of University Politehnica Timişoara, on naval brasses and bronzes type CuNi showed a good resistance to cavitation erosion, which can be substantially improved by various treatments. Originality/value: New researches by cavitation erosion are geared towards the development of new materials for construction of marine propellers, such as complex bronze alloys because of high mechanical properties obtained by applying such heat treatments.

Słowa kluczowe

EN

cavitation erosion; roughness; microstructure; complex alloyed bronze

PL

erozja kawitacyjna; chropowatość; mikrostruktura

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2014
• Tom: Vol. 65, nr 2
• Strony: 61--67
• Opis fizyczny: Bibliogr. 12 poz., rys., tab

Twórcy

autor

Oanca O.V.

• Faculty of Mechanics, University “Politehnica” Timisoara, Romania
• National Research and Development Institute for Welding and Material Testing - ISIM Timişoara, Romania

autor

Bordeasu I.

• Faculty of Mechanics, University “Politehnica” Timisoara, Romania

autor

Mitelea I.

• Faculty of Mechanics, University “Politehnica” Timisoara, Romania

autor

Craciunescu C.M.

• Faculty of Mechanics, University “Politehnica” Timisoara, Romania

Bibliografia

• [1] I. Bordeaşu, Eroziunea cavitaţională a materialelor, Editura Politehnica, Timişoara, 2006.
• [2] L. Edwin, A. Frances, W. Margaret, Statistics Manual, Dover Publications, Inc. New York, 2010.
• [3] J.P. Franc, F. Avellan, B. Belahadji, J.-Y. Billard, L. Briançon-MarjolleT, D. Fréchou, D.H. Fruman, A. Karimi, J.-L. Kueny, J.-M. Michel, La Cavitation, Mecanismes phisiques et aspects industriels, Press Universitaires de Grenoble, 1995.
• [4] G. Belgiu, O. Oanca, V. Ruset, NA. Sirbu, The geometry influence of the active sonotorde surfaces over the quality of ultrasonic welding for the plastic materials, in: Book Series: Annals of DAAAM and Proceedings, Vienna, Austria, 2009, Vol. 20, 1213-1214.
• [5] N.A. Sirbu, O. Oancă, C. Ciucă, Geometry influence of materials surface on the quality of ultrasonic metal welding, Welding and Material Testing, BID ISIM, 2/2014.
• [6] R. Garcia, F.G. Hammitt, R.E. Nystrom, Correlation of cavitation damage with other material and fluid properties, Erosion by Cavitation or Impingement, ASTM, STP 408, Atlantic City, 1960.
• [7] I. Mitelea, Studiul metalelor, Litografia Institutului Politehnic ”Traian Vuia”, Timisoara, 1983.
• [8] A. Thiruvengadam, H.S. Preiser, On testing materials for cavitation damage resistance, Report 233/3 (1963).
• [9] O. Oanca, Tehnici de optimizare a rezistentei la eroziunea prin cavitatie a unor aliaje CuNiAlFeMn destinate executiei elicelor navale, Teza de doctorala, UPTImisoara.
• [10] Standard method of vibratory cavitation erosion test, ASTM, Standard G32-10, 2010.
• [11] http://www.ampcometal.com/common/datasheets/us/A45_EX_E_US.pdf
• [12] http://www.ampcometal.com/common/datasheets/en/AM4_EX_E.pdf