Journal of Materials Science

, Volume 51, Issue 6, pp 2926–2934 | Cite as

Modelling grain boundary sliding during creep of austenitic stainless steels

  • Junjing He
  • Rolf Sandström
Original Paper


Two models are presented for grain boundary sliding (GBS) displacement during creep. GBS is considered as crucial for the formation of creep cavities. In the first model, the shear sliding model, GBS is accommodated by grains freely sliding along the boundaries in a power-law creeping material. The GBS rate is proportional to the grain size. In the second model, the shear crack model, the sliding boundaries are represented by shear cracks. The GBS rate is controlled by particles in the boundaries. In both models, the GBS displacement rate is proportional to the creep strain rate. Both models are consistent with existing experimental observations for GBS during creep of austenitic stainless steels. For cavity nucleation at particles, Harris’ model (1965) for the relationship between GBS and a critical particle size has been analysed and found to be in agreement with observations.


Creep Rate Austenitic Stainless Steel Creep Strain Shear Crack Grain Boundary Slide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Financial support by the European Union (directorate-general for energy), within the project MACPLUS (ENER/FP7EN/249809/MACPLUS) in the framework of the Clean Coal Technologies is gratefully acknowledged. The authors would like to thank the China Scholarship Council (CSC) for funding a stipend (File No. 201207090009) for Junjing He.

Compliance with ethical standards

Conflict of Interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Materials Science and EngineeringKTH Royal Institute of TechnologyStockholmSweden

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