Welcome to Open Science
Contact Us
Home Books Journals Submission Open Science Join Us News Unsubscribe Page
Investigative Study of the Structure and Mechanical Properties of Cu-Sn-Zn and Cu-Sn-Mg Alloys
Current Issue
Volume 5, 2017
Issue 5 (October)
Pages: 37-48   |   Vol. 5, No. 5, October 2017   |   Follow on         
Paper in PDF Downloads: 57   Since Oct. 25, 2017 Views: 451   Since Oct. 25, 2017
Authors
[1]
Kingsley Chidi Nnakwo, Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria.
Abstract
This research was carried out with the sole objective of investigating the structure and mechanical properties of Cu-Sn-Zn and Cu-Sn-Mg alloys. The effect of zinc and magnesium content on the structural modification and mechanical properties of Cu-Sn alloy was also investigated. Cu-10wt%Sn was used as the base alloy while zinc and magnesium of different concentration (0.2-1%wt) were used as the alloying elements. The alloys samples were developed using permanent die casting technique and machined to the required dimension for the mechanical tests and structural analysis. Mechanical properties such as percentage elongation, ultimate tensile strength, brinell hardness and impact strength were conducted using JPL tensile strength tester (Model: 130812), dynamic hardness tester and impact testing machine respectively. The structural analysis was conducted using an optical metallurgical microscope (model: L2003A) and scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS). Structural analysis of the control sample revealed the presence of α-phase and dendrite of intermetallic compound. Fine and evenly distributed intermetallic phases were indicated in the alloy doped with zinc and magnesium respectively. Mechanical tests results indicated that addition of zinc and magnesium significantly improved the percentage elongation, ultimate tensile strength, hardness and impact strength of the alloy. Cu-Sn-Zn alloy showed increased mechanical properties as the concentration of zinc increased. The hardness values of Cu-Sn-Zn and Cu-Sn-Mg alloys increased as the zinc and magnesium content increased to 0.8%wt and decreased with further increase in the dopants content. Maximum percentage elongation and impact strength of 17.3% and 63J respectively were obtained by the sample containing 1wt% zinc while optimum hardness and ultimate tensile strength values of 285MPa and 312MPa respectively were obtained by the sample containing 0.8%wtand 1wt% magnesium respectively.
Keywords
Modification, Structure, Hardness, Strength, Intermetallic Phases, Impact
Reference
[1]
Stanislov S. N., Irina B. M. and Oleg D. N. (2009) Handbook of Non-Ferrous Metal Powders. Page: 331-368.
[2]
Mao T., Bian X., Xue X., Zhang Y., Guo J. and Sun B. (2007) Correlation between Viscosity of Molten Cu–Sn Alloys and Phase Diagram. Physica B. Vol: 387, pp: 1-5.
[3]
Nagy E., Kristaly F., Gyenes A. and Gacsi Z. (2015) Investigation of Intermetallic Compounds in Sn-Cu-Ni Lead-Free Solders. Archives of Metallurgy and Materials, Volume 60, Issue 2, pp. 1511-1515.
[4]
Ketut G. S. I., Soekrisno R. and Made M. I. and Suyitno (2011) The Effect of Annealing Temperature on Damping Capacity of the Bronze 20%Sn Alloy. International Journal of Mechanical and Mechatronics Engineering IJMME-IJENS, Vol: 11 No: 04, pp. 1-5.
[5]
Favstov Y. K., Zhravel L. V. and Kochetkova L. P. (2003) Structure and Damping Capacity of Br022 Bell Bronze,” Journal Metal science and Heat treatment, vol. 45, pp. 449-451.
[6]
Eggenschwiler C. E. (2001) Effect of Antimony on the Mechanical Properties of A Bearing Bronze (Cu 80: Sn 10: Pb 10). Bureau of Standards Journal of Research, Vol. 8, pp. 625-634.
[7]
Martorano M. A. and Capocchi J. D. T (2000) Dendrite Structure Control in Directionally Solidified Bronze Castings. International Journal of Cast Metals Res., Vol. 13, pp. 49-57.
[8]
Marcelo A. M. and José D. T. C. (2000) Effects of processing variables on the micro segregation of directionally cast samples. Metallurgical and Materials Transactions A. Volume 31, Issue 12, pp 3137-3148.
[9]
Kumoto E. A., Alhadeff R. O. and Martorano M. A. (2002) Microsegregation and Dendrite Arm Coarsening in Tin Bronze. Materials Science and Technology. Vol. 18, pp. 1001-1006.
[10]
Ilangovan S. and Sellamuthu R. (2013) Effects of Tin on Hardness, Wear Rate and Coefficient of Friction of Cast Cu-Ni-Sn Alloys. Journal of Engineering Science and Technology. Vol. 8, No. 1, pp. 34-43.
[11]
Krivtsova O., Ibatov M., Tolkushkin A., Talmazan V., Amanzholov Z. (2016) Investigation of ECAP on Microstructure and Mechanical Properties of Bronze at Different Temperatures. Journal of Civil Engineering and Construction, 5 (2): 83-89.
[12]
Nadolski M. (2017) The Evaluation of Mechanical Properties of High-tin Bronzes. Archives of Foundry Engineering, 17 (1): 127-130.
[13]
Martyushev N., Semenkov I. V. and Petrenko Y. N. (2014) Structure and Properties of Leaded Tin Bronze under Different Crystallization Conditions", Advanced Materials Research, Vol. 872, pp. 89-93.
[14]
Sergejevs A., Kromanis A., Ozolins J., Gerins E. (2016) Influence of Casting Velocity on Mechanical Properties and Macro-Structure of Tin Bronzes, Key Engineering Materials, Vol. 674, pp. 81-87.
[15]
Kexing S., Yanjun Z., Peifeng Z., Yanmin Z. and Ning B. (2013) Cu-10Sn-4Ni-3Pb Alloy Prepared by Crystallization Under Pressure: An Experimental Study. Acta Metall. Sin. (Engl. Lett.) Vol. 26 No. 2 pp. 199-205.
Open Science Scholarly Journals
Open Science is a peer-reviewed platform, the journals of which cover a wide range of academic disciplines and serve the world's research and scholarly communities. Upon acceptance, Open Science Journals will be immediately and permanently free for everyone to read and download.
CONTACT US
Office Address:
228 Park Ave., S#45956, New York, NY 10003
Phone: +(001)(347)535 0661
E-mail:
LET'S GET IN TOUCH
Name
E-mail
Subject
Message
SEND MASSAGE
Copyright © 2013-, Open Science Publishers - All Rights Reserved