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The Influence of the Matrix Microstructure on Abrasive Wear Resistance of Heat-Treated Fe–32Cr–4.5C wt% Hardfacing Alloy

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Abstract

The abrasion wear resistance of Fe–32Cr–4.5C wt% hardfacing alloy was investigated as a function of matrix microstructure. In this study, the alloy was deposited on ASTM A36 carbon steel plates by the shielded metal arc welding (SMAW) process and the as-welded matrix microstructure was changed into ferrite, martensite, and tempered martensite by heat treatment processes. The Pin-on-disk test results show that under low (5 N) and high (20 N) load conditions, the wear resistance behavior of the as-welded matrix sample is 20 and 15% higher, respectively, than the martensitic matrix sample, although the bulk hardness of the as-welded matrix is 5% lower. The ferritic matrix sample has the poorest wear resistance behavior which is less than half of that of the as-welded matrix one. Micro-ploughing, micro-cutting, and micro-cracking are recognized as the micro-mechanisms in the material removal in which the proportion of micro-ploughing mechanism increased by increasing matrix toughness.

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Authors and Affiliations

  1. Department of Material Science and Engineering, Shahid Bahonar University of Kerman, P.O. Box No. 76135-133, Kerman, Iran

    M. Kazemipour & Sh. Sharafi

  2. Department of Materials Science and Engineering, Shiraz University of Technology, P.O. Box No. 71555-313, Shiraz, Iran

    H. Shokrollahi

Authors
  1. M. Kazemipour
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  2. H. Shokrollahi
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  3. Sh. Sharafi
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Correspondence to H. Shokrollahi.

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Kazemipour, M., Shokrollahi, H. & Sharafi, S. The Influence of the Matrix Microstructure on Abrasive Wear Resistance of Heat-Treated Fe–32Cr–4.5C wt% Hardfacing Alloy. Tribol Lett 39, 181–192 (2010). https://doi.org/10.1007/s11249-010-9634-0

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  • DOI: https://doi.org/10.1007/s11249-010-9634-0

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