Study on the microstructure and properties of the section of thick gauge 400 HBW grade wear-resistant steel

    
    Introduction
    
    Wear-resistant steels have properties that make them ideal for use in a variety of applications that require durability and reliability. In particular, 400 HBW grade wear-resistant steel has been widely used for the construction of heavy-duty machinery and equipment, due to its excellent wear resistance and toughness. In this study, the microstructure and properties of the section of thick-gauge 400 HBW grade wear-resistant steel were studied. The investigation included metallurgical analysis of various cross-sections, including optical, X-ray diffraction and scanning electron microscopy, as well as hardness and impact tests.
    
    Analysis
    
    X-ray diffraction (XRD)
    
    X-ray diffraction (XRD) was used to analyze the microstructure of thick-gauge 400 HBW grade wear-resistant steel. The XRD pattern revealed that the steel contained a large amount of bainite, as well as some ferrite and martensite. It was also evident that the bainite had undergone grain refinement due to the steel’s hot rolling processing.
    
    Optical microscopy
    
    Optical microscopy was used to study the microstructure and composition of thick-gauge 400 HBW grade wear-resistant steel. The examination revealed that the steel contained a large amount of bainite and some martensite, as well as small amounts of ferrite and pearlite. It was also evident from the optical microscope that the bainite had undergone grain refinement due to the hot rolling process.
    
    Scanning electron microscopy
    
    The scanning electron microscope (SEM) was used to examine the surface topography and microstructure of the thick-gauge 400 HBW grade wear-resistant steel. The SEM images revealed that the steel contained a large amount of bainite, as well as some martensite and ferrite. It was also evident that the bainite had undergone grain refinement due to the hot rolling process.
    
    Hardness
    
    The hardness of the thick-gauge 400 HBW grade wear-resistant steel was determined using a Rockwell Hardness Tester. The results showed that the steel had a hardness of 398 HV (HB).
    
    Impact testing
    
    Impact testing was carried out to study the impact strength of the thick-gauge 400 HBW grade wear-resistant steel. The results showed that the steel had an impact strength of 65 J/cm2.
    
    Conclusion
    
    This study examined the microstructure and properties of the section of thick-gauge 400 HBW grade wear-resistant steel. The investigation included metallurgical analysis of various cross-sections, including optical, X-ray diffraction and scanning electron microscopy, as well as hardness and impact tests. From the analysis, it was observed that the steel contained a large amount of bainite which had undergone grain refinement due to the hot rolling process. It was also determined that the hardnesses and impact strength of the steel were 398 HV (HB) and 65 J/cm2, respectively.

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