Title: CCT diagram determination of a new low-cost high-speed steel
Abstract:The curves of Continuous Cooling Transformation (CCT) of supercooled austenite for a new low-cost high-speed steel (GDL -4) were measured by expansion instrument and Metallographic-Hardness method. Th...The curves of Continuous Cooling Transformation (CCT) of supercooled austenite for a new low-cost high-speed steel (GDL -4) were measured by expansion instrument and Metallographic-Hardness method. The microstructure and hardness characteristic of the steel’s transformation during the continuous cooling process were analysed. Results show that not only pearlite and martensite phase transition can be obtained at different temperature, but bainite phase zone can be obtained at the temperature from 303 ℃ to 383 ℃ as well. The Ac1of the steel is 890 ℃ and the critical cooling rate of the steel is 30 ℃/min. The bainite and pearlite can be obtained at range of cooling rate from 15 ℃/min to 11 ℃/min. The pearlite can be obtained when the cooling rate is less than 10 ℃/min.Read More
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 1
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot