Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 03, 2023 - September 06, 2023
Forged steel often shows a fibrous microstructure called “metal-flow”. It has been reported that the high toughness and strength of the steels are observed along the metal-flow（1）. Inhomogeneous chemical composition is considered to be one of the reasons for the formation of the metal-flow(2). However, detail relationship between mechanical property and metal-flow has not been clarified. Formation mechanism of metal-flow is also unclear. In this study, microstructural observations and tensile tests were conducted on SNC631 before forging, after forging, and after annealing. The results showed that annealing reduces the density of metal-flow. Low yield and fracture stress is observed after annealing.
