微观结构
材料科学
等温过程
沉积(地质)
钛合金
制作
过饱和度
合金
冶金
钛
热力学
物理
替代医学
病理
生物
古生物学
沉积物
医学
作者
Hyeon Jin Lee,P.L. Narayana,Jae Hyuk Kim,Chan Hee Park,Jae‐Keun Hong,Jong‐Taek Yeom,Taekyung Lee,Sang Won Lee
标识
DOI:10.1016/j.jallcom.2023.170202
摘要
The effect of interlayer cooling in directed energy deposition on the microstructure and mechanical properties of two titanium alloys (Ti–6Al–4 V and Ti–2.5Fe–4.5Al–0.25Si) was investigated in this study. On the one hand, the general process of directed energy deposition provided sufficient time for element partitioning, resulting in the formation of the isothermal ω. On the other hand, interlayer cooling interfered with element partitioning and isothermal ω formation. It induced the formation of the supersaturated α. The isothermal ω or supersaturated α, generated based on the fabrication conditions, significantly influenced the mechanical properties of these alloys. The higher the β-phase stability of the alloy, the greater is the change in its mechanical properties depending on the fabrication conditions. This study provides guidelines for the design of new alloys manufactured using directed energy deposition.
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