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7 原位析出强化和局部微观结构控制工艺原理[50,51]

Fig.7 Principle of in-situ precipitation strengthening and local microstructure control process[50,51] (a) real-time thermal history[50] (b) layered structure diagram[50] (c) secondary electron micrographs of soft and hard areas[50] (d) atom probe tomography (APT) analysis of the soft and hard zones[50] (e) microstructure with 30 s IDT[51] (f) microstructure with 250 s IDT[51]