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Effect of Carbide Orientation on Impact-Abrasive Wear Resistance of High-Cr Iron Used in Shot Blast Machine

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Abstract

In this work, the blades of shot-blasting machine were fabricated by high-chromium cast irons using investment cast processing to control different cooled rate in order to achieve solidification unidirectionally. The microstructure of oriented M7C3 carbides was simulated and revealed using deep itching methods. The rod-like M7C3 carbides in longitudinal direction and lath-shaped M7C3 carbides in transverse and vertical direction are observed. When the long axis of the carbide rods is paralleling to the shots flow direction, high-chromium cast irons possess higher hardness and fracture toughness than that of perpendicular to the shots flow direction. The results reveal that the blades possessing oriented M7C3 carbides in longitudinal direction exhibit excellent impact-abrasive wear resistance than that of in transverse and vertical direction. The wear surface was examined by scanning electron microscopy for identifying the impact wear mechanisms.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (Grant No.U1134101) and the Natural Science Foundation of Shandong Province (ZR2011EMM003).

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Authors and Affiliations

  1. School of Mechanical Engineering, University of Jinan, Jinan, 250022, China

    Shouren Wang, Linghui Song & Yang Qiao

  2. Industrial Group Corporation of Shandong University, Jinan, 250014, China

    Min Wang

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  1. Shouren Wang
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  2. Linghui Song
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  3. Yang Qiao
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  4. Min Wang
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Correspondence to Shouren Wang.

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Wang, S., Song, L., Qiao, Y. et al. Effect of Carbide Orientation on Impact-Abrasive Wear Resistance of High-Cr Iron Used in Shot Blast Machine. Tribol Lett 50, 439–448 (2013). https://doi.org/10.1007/s11249-013-0140-z

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  • DOI: https://doi.org/10.1007/s11249-013-0140-z

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