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Effects of TIG surface melting and chromium surface alloying on microstructure, hardness and wear resistance of ADI

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Abstract

Microhardness and wear resistance of different microstructures formed by TIG (tungsten inert gas) surface melting and chromium surface alloying (using ferrochromium) of ADI (austempered ductile iron) were studied. Surface melting resulted in the formation of a ledeburitic structure in the melted zone, and this structure has a hardness up to 896 HV as compared to 360 HV in that of ADI. Moreover, chromium surface alloying resulted in the formation of different structures including: (1) a hypereutectic structure consisting of primary (Fe,Cr)7C3 carbides and a eutectic matrix of transformed austenite (into martensite and retained austenite) , as also (Fe,Cr)7C3 carbides, with a hardness of 1078 HV; (2) a hypoeutectic structure consisting of the same eutectic along with transformed primary austenite, with a hardness of 755 HV; and (3) a ledeburitic structure with an acicular morphology and a hardness of 896 HV. The results also indicated that surface melting reduced the wear rate of the ADI by approximately 37%. Also, chromium surface alloying yielded a superior wear behavior and reduced the wear rate of the treated specimens by about 38% and 70%, depending on the structures formed.

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References

  1. Hayrynen K L, Brandenberg K R, Keough J R. Austempered Gears and Shafts: Tough Solutions [J]. Gear Technology, 2001, 18 (2): 42.

    Google Scholar 

  2. Qian M, Harada S, Kuroshima Y, Nagayoshi H. Surface Hardening of Ductile Cast Iron Using Stainless Steel [J]. Material Science and Engineering, 1996, 208A (1): 88.

    Article  Google Scholar 

  3. Nagai T, Fujioka J, Hattori H, et al. Iron Casting With Mo-Alloyed and W-Alloyed for Wear Resistance and Laser Surface Modification-Laser Surface Modification of Cast Iron Aimed at Refining the Wear Resistance [J]. Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society, 2004, 22 (1): 132 (in Japanese).

    Google Scholar 

  4. Sohi M H, Kasrshenas G, Boutorabi S M A. Electron Beam Surface Melting of As Cast and Austempered Ductile Irons [J]. Journal of Materials Processing Technology, 2004, 153–154(1–3): 199.

    Article  Google Scholar 

  5. Grum J, Sturm R. Microstructure Analysis of Nodular Iron 400–12 After Laser Surface Melt Hardening [J]. Materials Characterization, 1996, 36 (2–3): 81.

    Article  Google Scholar 

  6. Roy A, Manna I. Laser Surface Engineering to Improve Wear Resistance of Austempered Ductile Iron [J]. Materials Science and Engineering, 2001, A297 (1–2): 85.

    Article  Google Scholar 

  7. Benyounis K Y, Fakron O M A, Abboud J H, et al. Surface Melting of Nodular Cast Iron by Nd-YAG Laser and TIG [J]. Journal of Materials Processing Technology, 2005, 170(1–2): 127.

    Article  Google Scholar 

  8. Hiraoka T, Nakamora Y, Tanaka Y. Mechanical Properties of Cast Iron Surface-Hardened by TIG Arc Remelting [J]. Transactions of the American Foundrymen’s Society, 1995, (102): 603.

    Google Scholar 

  9. Wladyslaw A, Orlowicz, Trytek A. Susceptibility of Iron Castings to Heat Absorption From an Electric Arc and to Hardened-Layer Shaping [J]. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 2003, 34A (12): 2973.

    Google Scholar 

  10. Gioradno L, Tiziani A, Zambon A. Characterization of Surface Chromium and Molybdenum Alloying on Gray Cast Iron Obtained by the Plasma-Transferred Arc Technique [J]. Material Science and Engineering, 1991, A140 (1–2): 727.

    Article  Google Scholar 

  11. Tomlinson W J, Cash M, Bransden A S. Dry Sliding Wear of Grey Iron Laser Surface Alloyed With 14%–40% Chromium [J]. Wear, 1991, 142 (2): 383.

    Article  Google Scholar 

  12. Park H, Nakata K, Tomida S. In Situ Formation of TiC Particulate Composite Layer on Cast Iron by Laser Alloying of Thermal Sprayed Titanium Coating [J]. Journal of Material Science, 2000, 35 (3): 747.

    Article  Google Scholar 

  13. Bedolla-Jacuinde A, Correa R, Quezada J G, et al. Effect of Titanium on the As-Cast Microstructure of a 16% Chromium White Iron [J]. Materials Science and Engineering, 2005, 398A (1–2), 297.

    Article  Google Scholar 

  14. Svensson L E, Gretoft B, Ulander B, et al. Fe-Cr-C Hardfacing Alloys for High Temperature Applications [J]. Journal of Materials Science, 1986, 12 (3): 1015.

    Article  Google Scholar 

  15. Eroglu M, Zdemir N O. Tungsten-Inert Gas Surface Alloying of a Low Carbon Steel [J]. Surface and Coating Technology, 2002, 154 (2–3): 209.

    Article  Google Scholar 

  16. Yun E, Lee S. Improvement of Hardness and Wear Resistance in Stainless-Steel-Based Surface Composites Fabricated by High-Energy Electron Beam Irradiation [J]. Surface and Coatings Technology, 2006, 200 (11): 3478.

    Article  Google Scholar 

  17. Hutchings I M. Tribology: Friction and Wear of Engineering Materials [J]. Cambridge: Edward Arnold, 1992.

    Google Scholar 

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Authors and Affiliations

  1. School of Metallurgy and Materials Engineering, University of Tehran, Tehran, Iran

    A Amirsadeghi (Master), M Heydarzadeh Sohi & S F Kashani Bozorg

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  1. A Amirsadeghi
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  2. M Heydarzadeh Sohi
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  3. S F Kashani Bozorg
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Correspondence to A Amirsadeghi.

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Amirsadeghi, A., Sohi, M.H. & Bozorg, S.F.K. Effects of TIG surface melting and chromium surface alloying on microstructure, hardness and wear resistance of ADI. J. Iron Steel Res. Int. 15, 86–94 (2008). https://doi.org/10.1016/S1006-706X(08)60150-8

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  • DOI: https://doi.org/10.1016/S1006-706X(08)60150-8

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