Research Paper

Acta Mechanica Sinica

, Volume 28, Issue 5, pp 1323-1330

The effect of agglomerate on micro-structural evolution in solid-state sintering

  • Chao WangAffiliated withState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences
  • , Shao-Hua ChenAffiliated withState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences Email author 

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Abstract

Discrete element method (DEM) is used in the present paper to simulate the microstructural evolution of a planar layer of copper particles during sintering. Formation of agglomerates and the effect of their rearrangement on densification are mainly focused on. Comparing to the existing experimental observations, we find that agglomerate can form spontaneously in sintering and its rearrangement could accelerate the densification of compacts. Snapshots of numerical simulations agree qualitatively well with experimental observations. The method could be readily extended to investigate the effect of agglomerate on sintering in a three-dimensional model, which should be very useful for understanding the evolution of microstructure of sintering systems.

Keywords

Solid-state sintering Discrete element method Agglomerate Densification Micro-structural evolution