An approach toward multiscale modeling of direct metal laser sintering process

Direct Metal Laser Sintering (DMLS) is a relatively new technology which produces three dimensional fully dense complex shaped components directly from the powder material in a layer by layer fashion. This is a rapid manufacturing technique, in which the qualities of build parts are dependent completely on the microstructure along with process parameters. Thus, for fabricating of a sound defect-free component in DMLS process, it is required to understand the processing mechanism as well as the process parameter effect. Also to predict the part microstructures during the process may be an important factor for process optimization. The present article gives an idea about the DMLS process with its process feature and provides a comprehensive knowledge for further application of numerical modeling approaches on multiple lengths and time scales to describe different aspects of DMSL process. © 2019 Elsevier Ltd