激光热力交互增材制造Ti6Al4V合金的组织及力学性能

卢海飞, 吕继铭, 罗开玉, 鲁金忠

Microstructure and Mechanical Properties of Ti6Al4V Alloy by Laser Integrated Additive Manufacturing with Alternately Thermal/Mechanical Effects

LU Haifei, LV Jiming, LUO Kaiyu, LU Jinzhong

图5 SLM-LSP试样表层的TEM像

Fig.5 TEM images in the surface layer of SLM-LSP specimen (a) refined α' martensites (b) a large number of parallel mechanical twins and high density dislocation structures (c) magnified image of region Ⅰ in Fig.5b (d) SAED pattern of region Ⅰ in Fig.5b showing {101ˉ1} twin (T—twin, M—martensite) (e) magnified image of region Ⅱ in Fig.5b (f) SAED pattern of region Ⅱ in Fig.5b showing {101ˉ2} twin