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Effect of carbides on erosion resistance of 23-8-N steel

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Abstract

Microstructure is one of the most important parameters influencing erosion behaviour of materials. The role of carbides in the matrix is very complicated in controlling the erosion rate of the materials. Conflicting results have been reported in the literature about the effect of carbides on erosion resistance. Carbides are of great importance especially as obstacles against the penetration of erosive particles into the material surface. However, they are susceptible to cracking and causing matrix decohesion which may increase the overall erosion rate. In 23-8-N nitronic steel, carbides present in the form of bands are observed to accelerate the erosion rate. Coarse carbides cause depletion of carbon in the austenite matrix which adversely affects the strain hardening tendency thus causing deterioration in erosion resistance of the bulk material. The dissolution of carbides in the austenitic matrix after solution annealing is observed to improve the erosion resistance of 23-8-N nitronic steel.

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Acknowledgment

We thank M/s Star Wire (India) Ltd., Ballabhgarh (Haryana) India, for the steel supplied for this work.

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, Malaviya National Institute of Technology, Jaipur, 302 017, India

    ANIRUDDHA A GADHIKAR, ASHOK SHARMA & C P SHARMA

  2. Former Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee, 247 667, India

    D B GOEL

  3. (Now at BRCM College of Engineering & Technology, Bahal, 127 028, India)

    D B GOEL

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  1. ANIRUDDHA A GADHIKAR
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  2. ASHOK SHARMA
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  3. D B GOEL
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  4. C P SHARMA
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Correspondence to ANIRUDDHA A GADHIKAR.

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GADHIKAR, A.A., SHARMA, A., GOEL, D.B. et al. Effect of carbides on erosion resistance of 23-8-N steel. Bull Mater Sci 37, 315–319 (2014). https://doi.org/10.1007/s12034-014-0656-3

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  • DOI: https://doi.org/10.1007/s12034-014-0656-3

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