Publications by authors named "Han-Jie Guo"
Materials (Basel)
November 2020
Article Synopsis
- The study explores how nonmetallic inclusions in 304 stainless steel evolve during heat treatment at 1250 °C over different time intervals (0, 30, 60, and 120 minutes).
- The research finds that the density of inclusions initially increases and then decreases, while their average size follows an opposite trend.
- Furthermore, chromium oxide (CrO) content in the inclusions rises with heat treatment time, which increases their melting points but decreases their plasticity, highlighting the significance of Ostwald ripening in the process.
Article Synopsis
- The study investigated how nitrogen affects carbide structures in AISI M42 high-speed steel during casting and heat treatment processes.
- It was found that nitrogen addition influences the formation of fibrous and lamellar MC carbides, with fibrous being more stable when subjected to forging and annealing.
- Ultimately, the presence of nitrogen improved the distribution and dimensions of carbides, leading to enhanced impact toughness in the steel.
