The mechanical behavior and microstructure of additively manufactured AlSi10Mg for different material states and loading conditions
作者： Matthias Bleckmann , Michael Schuch , Tom Hahn
DOI: 10.1016/J.MSEA.2021.141134
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摘要: Abstract The mechanical behavior of AlSi10Mg produced by selective laser melting (SLM) and heat treated to T5 T6 was investigated under uniaxial compressive, tensile combined shear-compression loading for strain rates up 2·103s−1 different temperatures (23 °C/400 °C). AlSi10Mg-T5 possess lower strength but higher elongation fracture, specific absorbed energy rate sensitivity as the condition. In addition, material in state found be more prone biaxial elevated temperature than state. microstructural fractographical investigation reveal that these differences are mainly related sizes species precipitates. study is complemented a constitutive description flow stress function whole range rates. This model based on Orowan equation including dislocation drag mechanism combination with well-known Kocks-Meckin-Esrin approach. With this modelling it shown typical length scales, mobile/total densities generation/annihilation significantly differ strain.
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