| contributor author | Ankudinov, Vladimir | |
| contributor author | Gordeev, Georgii A. | |
| contributor author | Kharanzhevskiy, Evgeniy V. | |
| contributor author | Krivilyov, Mikhail D. | |
| date accessioned | 2022-05-08T09:24:45Z | |
| date available | 2022-05-08T09:24:45Z | |
| date copyright | 3/4/2022 12:00:00 AM | |
| date issued | 2022 | |
| identifier issn | 0022-1481 | |
| identifier other | ht_144_05_052201.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4285109 | |
| description abstract | A three-dimensional model of a partially melted powder bed with particles stochastically distributed in size and space coordinates has been developed. Numerical simulation of temperature distributions in stainless steel AISI 316 L and Al-12Si powders in vacuum, air, and argon has been performed to analyze unsteady heat transfer in a porous medium. The numerical model demonstrates a large effect of heat transfer through the gas phase in case of powders with low thermal conductivities like stainless steels. At the porosity level of 65% and above, the mechanism of heat transfer drastically changes and a linear dependence of thermal conductivity on porosity frequently used in literature becomes incorrect. The effects of the consolidation coefficient and size distribution on effective heat transfer in powders are discussed. The obtained dependencies of the effective thermal conductivity on porosity and the consolidation coefficient could be used in additive manufacturing applications. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Numerical Simulation of Thermal Conductivity of Stainless Steel and Al-12Si Powders for Additive Manufacturing | |
| type | Journal Paper | |
| journal volume | 144 | |
| journal issue | 5 | |
| journal title | Journal of Heat Transfer | |
| identifier doi | 10.1115/1.4053853 | |
| journal fristpage | 52201-1 | |
| journal lastpage | 52201-9 | |
| page | 9 | |
| tree | Journal of Heat Transfer:;2022:;volume( 144 ):;issue: 005 | |
| contenttype | Fulltext | |
