The Effect of QPQ Salt-Bath Nitriding on Microstructure and Wear Resistance of 4Cr5MoSiV1 Steel

Abstract:

In this paper, 4Cr5MoSiV1 steel is dealt with by QPQ salt-bath nitriding at 520°C, 540°C, 560°C and for 2h、4h、6h, respectively. The treated surface microstructure was analyzed by using SEM. The depth of nitriding layer, scratch hardness and wear-resistance were tested for QPQ salt-bath nitriding technology. The corrosion resistance was tested in the 5%NaCl water by using spraying method. The experimental results indicate that with increasing the temperature and the nitriding time, the depth of nitriding layer, scratch hardness and wear-resistance of 4Cr5MoSiV1 steel were increased greatly. Comparing with the untreated specimen, its hardness enhances 196.73%, wear resistance enhances 349.65%, anti-corrosion enhances 943.10%. The die hardness, wear resistance and the corrosion resistance can be greatly improved by using the QPQ salt-bath nitriding technology.

• Periodical: Advanced Materials Research (Volumes 154-155)
• Pages: 57-60
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.154-155.57
• Online since: October 2010
• Authors: Ying Xia Yu, Bo Lin He, Jian Ping Shi
• Keywords: 4Cr5MoSiV1 Steel, Microstructure, QPQ Salt-Bath Nitriding, Wear Resistance

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