Abstract
The microstructure, hardness, and residual stress of 0.28C–0.22Ti wear-resistant steel produced with cooling rates varying from 80.0 to 0.3 °C/s were determined using a dilatometer, scanning electron microscope, Vickers hardness tester, and nanoindentation tester. The results showed that the hardness of martensite decreased at a rate of approximately 0.935 HV/s with carbon diffusion time (the cooldown time required to transition from Ar3, 635–100 °C). The range of the residual stress caused by the hard particles decreased with decreasing cooling rate, from − 400–300 MPa (cooling rate 40 °C/s) to − 200–100 MPa (cooling rate 0.5 °C/s), proving that the TiC particles significantly contributed to the residual stress in the high-titanium steels.
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This research was supported by the National Natural Science Foundation of China (Grant No. 51774033).
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Dong, C., Wu, Hb. & Wang, Xt. Effect of cooling rate on microstructure, hardness, and residual stress of 0.28C–0.22Ti wear-resistant steel. J. Iron Steel Res. Int. 26, 866–874 (2019). https://doi.org/10.1007/s42243-019-00283-1
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DOI: https://doi.org/10.1007/s42243-019-00283-1