... experimental evidence. Machine systems and scanning technologies have boosted the usage of selective laser-melted materials, leading to virtually full-density products. Microstructure and porosity from powder melting generate inconsistent mechanical performance under cyclic load. The extended finite element...

... to the magnesium alloy obtained from the scrap stock. Comparatively, the substrate produced using squeeze casting shows a lower porosity level of 5.5 %, and it is clearly shown in optical images. Significant improvements in the mechanical properties, such as hardness and compression strength, are obtained...

...René Laquai; Bernd Randolf Müller; Galina Kasperovich; Guillermo Requena; Jan Haubrich; Giovanni Bruno Porosity in additively manufactured materials, such as laser powder bed fusion Ti-Al6-V4, can play an important role in their mechanical performance. Not only the total porosity but also the shape...

... to overall material performance. 08 11 2017 09 04 2018 17 07 2018 additive manufacturing directed energy selective laser melting Archimedes’ principle density defects porosity ultrasonic spectroscopy radiographic testing References Xue , L. and Islam , M. U...

... of pores above 5 μm in diameter. 31 03 2016 01 08 2016 18 10 2016 Additive manufacturing selective laser melting Al10-Si-1Mg porosity X-ray computed tomography (XCT) synchrotron 2016-04-01 West Conshohocken, PA References Dinda , G. P. , Song , L...

.... The main focus of the present study was to evaluate the impact of debinding and pyrolysis process step on the preform microstructure. That includes the determination and quantification of matrix and porosity evolution in carbon preforms. The defined formation of porosity during pyrolysis is a key parameter...

... in fracture simulations. The method is particularly suitable for modeling fractures of nuclear graphite. This is a quasi-brittle material in which there is considerable non-linearity prior to final fracture caused by the inherent porosity, which triggers a field of local distributed failures upon mechanical...

...J. Dong; F. Hoffmann; H. Kluemper-Westkamp; Hans W. Zoch Gaseous nitrocarburizing improves wear and corrosion resistance of machine components. This is primarily based on the compound layer that consists of carbonitrides. The composition and the porosity of the compound layer are the principal...