Volume 44 Issue 6
Dec.  2023
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Sun Xueli, Wang Shuai, Liu Chenyu, Fu Zhiqiang, Zheng Kaihong, Wang Juan, Ke Zhimin. Wear properties of TiC particle reinforced iron matrix composites prepared by casting sintering method[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(6): 70-75. doi: 10.7513/j.issn.1004-7638.2023.06.010
Citation: Sun Xueli, Wang Shuai, Liu Chenyu, Fu Zhiqiang, Zheng Kaihong, Wang Juan, Ke Zhimin. Wear properties of TiC particle reinforced iron matrix composites prepared by casting sintering method[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(6): 70-75. doi: 10.7513/j.issn.1004-7638.2023.06.010

Wear properties of TiC particle reinforced iron matrix composites prepared by casting sintering method

doi: 10.7513/j.issn.1004-7638.2023.06.010
  • Received Date: 2023-08-14
    Available Online: 2024-01-11
  • Publish Date: 2023-12-30
  • TiC particles reinforced high chromium cast iron matrix composites were prepared by casting sintering method. The effects of reinforced particles on the microstructure and wear behavior of the composites were studied by EDS and SEM. The results showed that the Rockwell hardness (HRC) of the composites increases from 49 to 60 compared with high chromium cast iron, due to the presence of TiC particles. During the wear process, the M7C3 carbides on the surface of high chromium cast iron appeared obvious cracks under the repeated action of abrasive particles, and gradually expanded into the matrix. The broken carbides are easy to fall off, which cannot effectively prevent the ploughing effect of abrasive particles on the surface of the material and aggravate the wear of the material. In the composites, a large number of TiC particles are exposed as the softer matrix phase is preferentially removed by the abrasive. These surface convex TiC particles bear the main damage of the abrasive particles, thus effectively protecting the matrix material. Through experimental comparison, it is found that the wear resistance of the composites is 1.95 times higher than that of high chromium cast iron under the same wear conditions.
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