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The Effect of Si Addition on the Microstructure and Mechanical Properties of ZA-12 Alloy

Year 2020, Volume: 11, 167 - 173, 31.12.2020

Abstract

A ZA-12 Zinc-based alloy was melted in an induction melting furnace, and cast in a graphite mold. Different amount of Si was added for examining the microstructural evolution and mechanical properties of ZA-12 alloy. All alloys were annealed at 350oC for 22 hours to investigate the effect of the heat treatment on the properties of ZA-12 alloy. The microstructure examinations revealed that while ZA-12 alloy has a dendritic microstructure with fine grains, with the Si addition the dendrite arms were broken. After annealing, it is observed that the grain size of the alloy was coarsened and Si particles were dispersed in the structure homogeneously. The Si addition was not altering the hardness of the alloys. The hardness of all alloys was decreased with the annealing. Compression tests were performed to determine the mechanical properties. These tests showed that the yield strength is decreased with Si addition, but remain constant with increasing Si content for as casted alloys. The yield elongation was decreased continuously with increasing Si content. The annealing heat treatment slightly decreased the yield strength of alloys. It was observed that all as-cast and annealed alloys were exhibiting ductile behavior.

References

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Year 2020, Volume: 11, 167 - 173, 31.12.2020

Abstract

References

  • Abou El-Khair M.T., Daoud A., & Ismail A. (2004). Effect of different Al contents on the microstructure, tensile, and wear properties of Zn-based alloy. Materials Letters, 58, 1754-1760.
  • Alaneme K.K., & Ajayi O.J. (2017). Microstructure and mechanical behavior of stir-cast Zn-27Al based composites reinforced with rice husk ash, silicon carbide, and graphite. Journal of King Saud University-Engineering Sciences, 29, 172-177.
  • Almomani M., Hayajneh M.T., & Draidi M. (2016). Tribological investigation of Zamak alloys reinforced with alumina (Al2O3) and fly ash. Particulate Science and Technology, 34, 317-323.
  • Hanna M.D., Carter J.T., Rashid M.S. (1997). Sliding wear and friction characteristics of six Zn-based die-casting alloys. Wear, 203-204, 11-21.
  • Liu J., Yu S., Zhu X, Wei M., Luo Y., Liu Y. (2009). Correlation between ceramic additions and compressive properties of Zn-22Al matrix composite foams. Journal of Alloys and Compounds, 476, 220-225.
  • Madronero A., Cruz J., Foruria C., Coleto J. (1997). Rheocasting a Zn-Al Composite reinforced with Coke dust. Journal of Minerals, Metals and Materials Society, 49, 46-49.
  • Prasad B.K., Patwardhan A.K., Yegneswaran A.H. (1996). Dry sliding wear characteristic of some zinc-aluminum alloys: a comparative study with a conventional bearing bronze at a low speed. Wear, 199, 142-151.
  • Pürçek G., Savaşkan T., Küçükömeroğlu T., Murphy S. (2002). Dry sliding friction and wear properties of zinc-based alloys. Wear, 252, 894-901.
  • Savaşkan T, Hekimoğlu A.P., Pürçek G. (2004). Effect of copper content on the mechanical and sliding wear properties of monotectoid-based zinc-aluminum-copper alloys. Tribology International, 37, 45-50.
  • Savaşkan T., Hekimoğlu A.P. (2014). Microstructure and mechanical properties of Zn-15Al-based ternary and quaternary alloys. Materials Science and Engineering A, 603, 52-57.
  • Şevik H. (2014). The effect of silver on wear behavior of zinc-aluminum-based ZA-12 alloy produced by gravity casting. Materials Characterization, 89, 81-87.
  • Tao L., Dellis M.A., Boland F., Delannay F. (1995). Comparison of fibers for creep strengthening of zinc-aluminum foundry alloys. Composites, 26, 611-617.
  • Türk A., Kurnaz C., Çevik H. (2007). Comparison of the wear properties of modified ZA-8 alloys and conventional bearing bronze. Materials and Design, 28, 1889-1897.
  • Xu Z., Ma L., Yan J, Chen W., Yang S. (2014). Solidification microstructure of SiC particulate reinforced Zn-Al composites under ultrasonic exposure. Materials Chemistry and Physics, 148, 824-832.
There are 14 citations in total.

Details

Primary Language English
Subjects Engineering
Journal Section Articles
Authors

Ibrahim Celıkyurek

Osman Torun

Bedri Baksan

Publication Date December 31, 2020
Published in Issue Year 2020Volume: 11

Cite

APA Celıkyurek, I., Torun, O., & Baksan, B. (2020). The Effect of Si Addition on the Microstructure and Mechanical Properties of ZA-12 Alloy. The Eurasia Proceedings of Science Technology Engineering and Mathematics, 11, 167-173.