Study on Fatigue Properties of Duplex Wear-resistant Steel and High Manganese Steel
Literature Review
Many studies have been performed to evaluate the fatigue properties of particular materials, including duplex wear-resistant steel. Studies have suggested that duplex wear-resistant steel can offer superior fatigue properties compared to conventional martensitic grade steels and that the duplex steels have lower fatigue strengths than austenitic materials. In addition, as compared to low alloyed, 1% to 3% manganese steels, the duplex wear-resistant steel has superior wear resistance, which allows the use of machines with fewer parts and fewer shut-downs for maintenance.
Other studies have looked at the fatigue properties of high manganese steel, which is a commonly used alloy in engineering applications. High manganese steel combines strength, toughness, and superior wear resistance. Its superior wear resistance is attributed to its high-chromium, high-manganese alloying combination, which increases the hardness and toughness of the material. In addition, the high levels of alloying elements make high manganese steel well-suited for use in highly corrosive environments.
Materials and Methods
For this study, two types of materials were used: a duplex wear-resistant steel (with a chromium – nickel – molybdenum combination) and a high manganese steel (with a chromium – manganese alloying combination). Stress-strain cycling tests were performed on both types of materials. The tests were conducted on samples of the material to evaluate their fatigue properties. The tests included grinding, tensile, and fatigue tests.
Results
For both materials, the tensile strength and yield strength were found to be high. The results of the grinding tests showed that both materials had acceptable resistances to wear. The results of the fatigue tests showed that the duplex wear-resistant steel had higher fatigue limits and lower fatigue strength than the high manganese steel.
Discussion
The tensile and yield strength results of both materials confirm their suitability for applications that require high strength. The wear tests showed that both materials had good wear resistance, which is important for many engineering applications. The fatigue tests indicated that the duplex wear-resistant steel had higher fatigue limits and lower fatigue strength than the high manganese steel. This indicates that the duplex wear-resistant steel has greater resistance to fatigue failure, making it suitable for applications that require long-term usage.
Conclusion
The results of this study show that the duplex wear-resistant steel has higher fatigue limits and lower fatigue strength than high manganese steel. This indicates that the duplex wear-resistant steel has superior fatigue properties compared to high manganese steel, making it suitable for applications that require long-term usage. The results also showed that both materials had good wear resistance, confirming their suitability for applications that require high strength.
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