所属单位：外国语学院
发表刊物：Acta Metal. Sin.
摘要：To investigate the influence of island scanning on the microstructures and mechanical properties of direct laser-deposited Ti–6Al–4V structures, two samples are prepared using island scanning and orthogonal successive scanning, respectively. The microstructures, relative density, and mechanical properties of the samples prepared using these two scanning strategies are compared. Each sample exhibits columnar β-grain morphology and basket-weave microstructure characterization. The grains of the sample prepared using island scanning are significantly finer than that prepared by orthogonal successive scanning due to faster cooling during deposition. However, the relative density of the sample prepared using island scanning was slightly smaller due to the concentration of lack-of-fusion pores at the overlap zone of the island. Tensile testing at room temperature indicates that the ultimate tensile strength and yield strength of the sample prepared using island scanning is enhanced due to finer grains, while the ductility of the sample is weakened due to defects. © 2018, The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature.
ISSN号：1006-7191
是否译文：否
发表时间：2019-09-01
合写作者：王霄,吕非,梁绘昕,谢德巧,田宗军
第一作者：沈理达
通讯作者：沈理达,田宗军