TY - JOUR
T1 - The grain size and porosity dependent elastic moduli and yield strength of nanocrystalline ceramics
AU - Zhou, Jianqiu
AU - Li, Yuanling
AU - Zhu, Rongtao
AU - Zhang, Zhenzhong
PY - 2007/2/15
Y1 - 2007/2/15
N2 - For the purpose of investigating the effects of grain size and porosity on the elastic modulus and strength of porous and possible multi-phase nanocrystalline ceramics, a mixtures-based model is firstly developed to describe the mechanical behavior of an individual phase in multi-phase nanocrystalline ceramics, then Budiansky's self-consistent method is used to calculate the elastic modulus of porous, multi-phase, nanocrystalline ceramic, the predictions are in good agreement with the results in literature. Further, the established method is extended to describe the constitutive relations with small plastic deformation and yield strength of porous and possible multi-phase nanocrystalline ceramics in conjunction with the secant-moduli approach and iso-strain assumption. Overall, the developed method appears to be capable of reflecting the effects of grain size and porosity on the elastic moduli and yield strength of porous, multi-phase, nanocrystalline ceramics.
AB - For the purpose of investigating the effects of grain size and porosity on the elastic modulus and strength of porous and possible multi-phase nanocrystalline ceramics, a mixtures-based model is firstly developed to describe the mechanical behavior of an individual phase in multi-phase nanocrystalline ceramics, then Budiansky's self-consistent method is used to calculate the elastic modulus of porous, multi-phase, nanocrystalline ceramic, the predictions are in good agreement with the results in literature. Further, the established method is extended to describe the constitutive relations with small plastic deformation and yield strength of porous and possible multi-phase nanocrystalline ceramics in conjunction with the secant-moduli approach and iso-strain assumption. Overall, the developed method appears to be capable of reflecting the effects of grain size and porosity on the elastic moduli and yield strength of porous, multi-phase, nanocrystalline ceramics.
KW - Elastic modulus
KW - Nanocrystalline ceramics
KW - Plastic deformation
KW - Yield stress
UR - http://www.scopus.com/inward/record.url?scp=33845906360&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2006.10.005
DO - 10.1016/j.msea.2006.10.005
M3 - 文章
AN - SCOPUS:33845906360
SN - 0921-5093
VL - 445-446
SP - 717
EP - 724
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
ER -