多孔性
材料科学
同步加速器
晶体塑性
复合材料
阴极射线
热等静压
冶金
可塑性
电子
微观结构
光学
量子力学
物理
作者
Ross Cunningham,Andrea Nicolas,John Madsen,Eric Fodran,Ηλίας Αναγνώστου,Michael D. Sangid,Anthony D. Rollett
标识
DOI:10.1080/21663831.2017.1340911
摘要
Metal additive manufacturing techniques such as the powder-bed systems are developing as a novel method for producing complex components. This study uses synchrotron-based X-ray microtomography to investigate porosity in electron beam melted Ti-6Al-4V in the as-built and post-processed state for two different powders. The presence of gas porosity in the starting powder was shown to correlate to porosity in the as-built components. This porosity was observed to shrink after a hot isostatic press treatment, but grow following a subsequent heat treatment. Crystal plasticity simulations were used to observe the effects of various observed pore sizes on mechanical behavior under loading.
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