激光增材制造过程中循环热输入对组织和性能的影响

王迪, 黄锦辉, 谭超林, 杨永强

Review on Effects of Cyclic Thermal Input on Microstructure and Property of Materials in Laser Additive Manufacturing

WANG Di, HUANG Jinhui, TAN Chaolin, YANG Yongqiang

图9 300M钢LPBF过程中微观组织演变示意图[62],及基于原位回火效应获得优异力学性能的AISI 420[63]

Fig.9 Schematic of microstructure evolution of LPBF-produced 300M steel[62] (a), and excellent mechanical properties of AISI 420 based on in situ annealing effect[63] (b) (Ac1—austenitzing initial isotherm, Tm—melting point, Tr—recrystallizing temperature; PAG—prior austenite grain)