TY - JOUR
T1 - Thermal stability of nanocrystalline materials
T2 - thermodynamics and kinetics
AU - Peng, H. R.
AU - Gong, M. M.
AU - Chen, Y. Z.
AU - Liu, F.
N1 - Publisher Copyright:
© 2016 Institute of Materials, Minerals and Mining and ASM International Published by Taylor & Francis on behalf of the Institute and ASM International.
PY - 2017/8/18
Y1 - 2017/8/18
N2 - As nanocrystalline (NC) materials exhibit many unique properties, which are often superior to the properties of their coarse-grained counterparts, they offer significant potential for use in a variety of applications. Owing to their high volume fraction of grain boundaries, however, the intrinsic problem of poor thermal stability substantially limits the potential application of these materials. To solve this problem, thermal stability has become an important issue in the field of NC materials. This paper reviews the progress in the investigation of the thermal stability of NC materials with emphasis on the fundamentals of grain size stabilization by different approaches. First, the stabilizing approaches are classified into two categories, namely, thermodynamic stabilization and kinetic stabilization. Second, within the framework of thermodynamics and kinetics, the progress in theoretical models, experiments, and computer simulations is comprehensively reviewed. Third, strategies that are proposed to stabilise the grain size are summarised and discussed. This paper shows that the stabilization of NC materials is feasible and can be tailored by the selection of suitable strategies to satisfy the demands of different practical applications. Finally, several issues that require further investigation are identified.
AB - As nanocrystalline (NC) materials exhibit many unique properties, which are often superior to the properties of their coarse-grained counterparts, they offer significant potential for use in a variety of applications. Owing to their high volume fraction of grain boundaries, however, the intrinsic problem of poor thermal stability substantially limits the potential application of these materials. To solve this problem, thermal stability has become an important issue in the field of NC materials. This paper reviews the progress in the investigation of the thermal stability of NC materials with emphasis on the fundamentals of grain size stabilization by different approaches. First, the stabilizing approaches are classified into two categories, namely, thermodynamic stabilization and kinetic stabilization. Second, within the framework of thermodynamics and kinetics, the progress in theoretical models, experiments, and computer simulations is comprehensively reviewed. Third, strategies that are proposed to stabilise the grain size are summarised and discussed. This paper shows that the stabilization of NC materials is feasible and can be tailored by the selection of suitable strategies to satisfy the demands of different practical applications. Finally, several issues that require further investigation are identified.
KW - Nanocrystalline materials
KW - Zener pinning
KW - grain boundary energy
KW - grain growth
KW - kinetics
KW - solute drag
KW - thermal stability
KW - thermodynamics
UR - http://www.scopus.com/inward/record.url?scp=84996600332&partnerID=8YFLogxK
U2 - 10.1080/09506608.2016.1257536
DO - 10.1080/09506608.2016.1257536
M3 - 文献综述
AN - SCOPUS:84996600332
SN - 0950-6608
VL - 62
SP - 303
EP - 333
JO - International Materials Reviews
JF - International Materials Reviews
IS - 6
ER -