supported by the National Natural Science Foundation of China(No.52074207 and No.52304358);the Natural Science Basic Research Program of Shaanxi(No.2023-JC-QN-0376);Shaanxi Province Innovation Ability Support Plan(No.2023-CX-TD-53).
Understanding the solidification characteristics and microsegregation under varying cooling rates is essential to comprehend the formation of center cracks in large section round billets.P91 high-alloy steel was taken...