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Microstructure and Impact Wear Resistance of TiN Reinforced High Manganese Steel Matrix

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Abstract

A high-manganese austenitic steel matrix (Mnl3) composite reinforced with TiN ceramic particles was synthesized by means of Vacuum-Evaporation Pattern Casting (V-EPC). The composite microstructure and interface bonding of TiN/matrix were analyzed utilizing optical microscope (OM) and X-ray diffraction (XRD). The effects of different volume fraction of TiN on impact wear resistance were evaluated by MLD-10 impact wear test. The results showed that TiN was evenly distributed in composite layer and had a good interface bonding with matrix when the volume fractions of TiN were 27% and 36%, respectively. However, cast defects and TiN agglomeration occurred when the TiN volume fraction increased to 48%. Compared with high-manganese austenitic steel (Mnl3), the impact wear resistance of the TiN-reinforced composite is better. In small impact load conditions, composite layer can effectively resist abrasives wear and TiN particles played an important role in determining impact wear resistance of composite layer. In large impact load, the synergistic roles of spalling of TiN particles and the increase of work hardening of Mn13 based material are responsible for impact wear resistance.

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Correspondence to You-ping Ma.

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Foundation Item: Item: Item Sponsored by Office of Education of Shaanxi Province of China (08JK345); Programs for Industry Development of Shaanxi Province of China (2008K06-18)

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Ma, Yp., Li, Xl., Wang, Ch. et al. Microstructure and Impact Wear Resistance of TiN Reinforced High Manganese Steel Matrix. J. Iron Steel Res. Int. 19, 60–65 (2012). https://doi.org/10.1016/S1006-706X(12)60114-9

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  • DOI: https://doi.org/10.1016/S1006-706X(12)60114-9

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