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Impact of Strontium on the Hardness and Impact Test of Eutectic Al-Si+1.0% Manganese Alloy

Received: 1 April 2021     Accepted: 20 May 2021     Published: 23 September 2021
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Abstract

This experimental research portrays the impact of strontium seen on hardness and impact strength of Al-1.0%mn-12%Si alloy. Strontium was added with respect to the amount of silicon present in the alloys (12% of Si; 0.02-0.03% of Sr) and 1.0% manganese which serves as a modifying agent). Higher amount of aluminum and silicon were dissolved and cast as cylindrical ingots. Impact and Hardness test were tested using charpy impact testing machine and Rockwell hardness testing machine (ASTM E18-11) respectively. The addition of Sr appears to decline as soon as the addition exceeds the 0.026% level which shows negative effect to the mechanical properties because of the presence of some compounds like Al4SrSi2 and releases of brittle Al3SrSi3 phase are bound to set and coarsening of the eutectic silicon can occur which will reduce the properties of the alloy causing them to revert to values more typical of unmodified material. The results showed that when strontium was used as a modifier to modify eutectic Al-Si alloy modifies the Al-Si, that the morphology of the alloy changed that lead to positive enhancement/increment in mechanical properties of the alloy.

Published in International Journal of Mechanical Engineering and Applications (Volume 9, Issue 4)
DOI 10.11648/j.ijmea.20210904.12
Page(s) 72-74
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Strontium, Aluminum Alloy, Eutectic Alloy, Impact Strength, Hardness

References
[1] Atasoy, I. Ö. A. (1984a): “Determination of Strontium in Aluminum-Silicon Eutectic Alloys with the Atomic Absorption Spectrophotometer”; ALUMINIUM English Edition, Vol. 60, No. 1 (1984), pp E 12-13.
[2] Daintith, J. [ed.] (2000):“Oxford Dictionary of Chemistry, Fourth Edition”. New York: Oxford University Press, Inc.
[3] Mbuya, T. O, (2003) ‘Influence of iron on castability and properties of aluminium silicon alloys; literature review’ international journal of cast metals research, 16 (5), pp, 451-465.
[4] Chawla, K. K, Liaw, P. K and Fishman, S. G, (1996)."High-Performance Composites: Commonalty of Phenomena" (Conference Review), JOM, 48 (2), pp. 43-44.
[5] Liao H, Sun Y, Sun G (2002), Correlation between mechanical properties and amount of dendritic α-Al phase in as-cast near-eutectic Al-11.6% Si alloys modified with strontium. Journal of Materials Processing Technology A335.
[6] Okwonna, C. O (2013). The Influence of additives on Al-Si eutectic alloy. M. Sc project, University of portharcourt, Nigeria.
[7] Szymczak, Cz. k, Kujawa, M. (2017). Local bucling of thin-walled channel member flange made of aluminum alloy. AIP Conference Proceedings 1822, 020014; doi: 10.1063/1.4977688.
[8] Zheng. Y. O, Zhang, Z. (2016). The performance and fire resistance of aluminium alloy I-beam, fire and Materials.
[9] Summers, P. Y. T., Chen, Y., Rippe, ch. M., Allen, B., Mouritz, A. P., Case, S. W., Latimer, B. Y (2015). Overview of aluminium alloy mechanical properities.
[10] ASTM E 18-08b- Standard Test Methods for Rockwell Hardness of Metallic Materials
[11] Andrzej Ambroziak (2018). Application and mechanical properties of aluminium alloys. Gdansk University of Technology, faculty of civil and environmental engineering Poland. Pp 525-528.
[12] Alaco metals (2019) Aalco Metals Ltd, Parkway House, Unit 6 Parkway Industrial Estate, Wednesbury WS10 7WP
[13] Rosmanamuhanandi R, Sulaimans, Azmah M. I. S, Talari M. K (2018). Characterization of Al-Si cast alloy refined with titanium diboride and scandium (Sc). Journal of mechanical engineering 5 (1), 62-70.
[14] Ibrahim R. E, Sabrina M, smamuhamadni R, Yahaya m, Suliaimann S, Ismali M. I. S (2018). Corrosion behavior of Al-Si cast alloy reinforced with titaniumdiboride (TiB2) and scandium. Journal of engineering and science research (2) 1-8.
[15] Basir N. N. A, Mustafa N. H, Ibrahim R. E, Rosmamuhamadani R (2019). Mecahnical Characterization of Al-Si-TiB2 reinforced by scandium (Sc) and Strontium (Sr). International Journal of engineering and technology. 7 (4.14): 392.
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  • APA Style

    Okwonna Chukwuebuka Onochie. (2021). Impact of Strontium on the Hardness and Impact Test of Eutectic Al-Si+1.0% Manganese Alloy. International Journal of Mechanical Engineering and Applications, 9(4), 72-74. https://doi.org/10.11648/j.ijmea.20210904.12

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    ACS Style

    Okwonna Chukwuebuka Onochie. Impact of Strontium on the Hardness and Impact Test of Eutectic Al-Si+1.0% Manganese Alloy. Int. J. Mech. Eng. Appl. 2021, 9(4), 72-74. doi: 10.11648/j.ijmea.20210904.12

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    AMA Style

    Okwonna Chukwuebuka Onochie. Impact of Strontium on the Hardness and Impact Test of Eutectic Al-Si+1.0% Manganese Alloy. Int J Mech Eng Appl. 2021;9(4):72-74. doi: 10.11648/j.ijmea.20210904.12

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  • @article{10.11648/j.ijmea.20210904.12,
      author = {Okwonna Chukwuebuka Onochie},
      title = {Impact of Strontium on the Hardness and Impact Test of Eutectic Al-Si+1.0% Manganese Alloy},
      journal = {International Journal of Mechanical Engineering and Applications},
      volume = {9},
      number = {4},
      pages = {72-74},
      doi = {10.11648/j.ijmea.20210904.12},
      url = {https://doi.org/10.11648/j.ijmea.20210904.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.20210904.12},
      abstract = {This experimental research portrays the impact of strontium seen on hardness and impact strength of Al-1.0%mn-12%Si alloy. Strontium was added with respect to the amount of silicon present in the alloys (12% of Si; 0.02-0.03% of Sr) and 1.0% manganese which serves as a modifying agent). Higher amount of aluminum and silicon were dissolved and cast as cylindrical ingots. Impact and Hardness test were tested using charpy impact testing machine and Rockwell hardness testing machine (ASTM E18-11) respectively. The addition of Sr appears to decline as soon as the addition exceeds the 0.026% level which shows negative effect to the mechanical properties because of the presence of some compounds like Al4SrSi2 and releases of brittle Al3SrSi3 phase are bound to set and coarsening of the eutectic silicon can occur which will reduce the properties of the alloy causing them to revert to values more typical of unmodified material. The results showed that when strontium was used as a modifier to modify eutectic Al-Si alloy modifies the Al-Si, that the morphology of the alloy changed that lead to positive enhancement/increment in mechanical properties of the alloy.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Impact of Strontium on the Hardness and Impact Test of Eutectic Al-Si+1.0% Manganese Alloy
    AU  - Okwonna Chukwuebuka Onochie
    Y1  - 2021/09/23
    PY  - 2021
    N1  - https://doi.org/10.11648/j.ijmea.20210904.12
    DO  - 10.11648/j.ijmea.20210904.12
    T2  - International Journal of Mechanical Engineering and Applications
    JF  - International Journal of Mechanical Engineering and Applications
    JO  - International Journal of Mechanical Engineering and Applications
    SP  - 72
    EP  - 74
    PB  - Science Publishing Group
    SN  - 2330-0248
    UR  - https://doi.org/10.11648/j.ijmea.20210904.12
    AB  - This experimental research portrays the impact of strontium seen on hardness and impact strength of Al-1.0%mn-12%Si alloy. Strontium was added with respect to the amount of silicon present in the alloys (12% of Si; 0.02-0.03% of Sr) and 1.0% manganese which serves as a modifying agent). Higher amount of aluminum and silicon were dissolved and cast as cylindrical ingots. Impact and Hardness test were tested using charpy impact testing machine and Rockwell hardness testing machine (ASTM E18-11) respectively. The addition of Sr appears to decline as soon as the addition exceeds the 0.026% level which shows negative effect to the mechanical properties because of the presence of some compounds like Al4SrSi2 and releases of brittle Al3SrSi3 phase are bound to set and coarsening of the eutectic silicon can occur which will reduce the properties of the alloy causing them to revert to values more typical of unmodified material. The results showed that when strontium was used as a modifier to modify eutectic Al-Si alloy modifies the Al-Si, that the morphology of the alloy changed that lead to positive enhancement/increment in mechanical properties of the alloy.
    VL  - 9
    IS  - 4
    ER  - 

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Author Information
  • Department of Mechanical Engineering, Micheal Okpara University of Agriculture, Umudike, Nigeria

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