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This study presents a new isotropic model capable of capturing the sinteringSintering kinetics of a 316L316L stainless steelStainless steel binder jettingBinder Jetting part for a wide range of temperaturesTemperature (1250–1390 °C). The model accounts for the two major sintering mechanismsSintering mechanisms, surface and volume diffusionDiffusion. A new sigmoidal function is introduced to account for the transitions between the different sintering mechanismsSintering mechanisms. The model was able to predict the sintered relative densityRelative density with a maximum error of 2.40% for sintering temperaturesSintering temperature equal to or above 1250 °C. Below 1250 °C, the simulated final densityDensity begins to deviate from experimental results more significantly. The model produces an error of 26.94% when the isothermal sintering temperatureSintering temperature is 1100 °C. This shows that a third sinteringSintering regime is required to accurately predict the sinteringSintering of 316L316L BJ parts below 1250 °C.

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Temperature-Sensitive Isotropic Sintering Model for 316L Binder Jetting Parts

  • 会议论文

  • 发表日期：

    2025年

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  • Alexander Abanobi,
  • Trevor Sabiston,
  • Reza Tangestani,
  • Srinivas Pendurti,
  • Arunkumar Natarajan,
  • Etienne Martin

摘要

This study presents a new isotropic model capable of capturing the sinteringSintering kinetics of a 316L316L stainless steelStainless steel binder jettingBinder Jetting part for a wide range of temperaturesTemperature (1250–1390 °C). The model accounts for the two major sintering mechanismsSintering mechanisms, surface and volume diffusionDiffusion. A new sigmoidal function is introduced to account for the transitions between the different sintering mechanismsSintering mechanisms. The model was able to predict the sintered relative densityRelative density with a maximum error of 2.40% for sintering temperaturesSintering temperature equal to or above 1250 °C. Below 1250 °C, the simulated final densityDensity begins to deviate from experimental results more significantly. The model produces an error of 26.94% when the isothermal sintering temperatureSintering temperature is 1100 °C. This shows that a third sinteringSintering regime is required to accurately predict the sinteringSintering of 316L316L BJ parts below 1250 °C.