TY - JOUR
T1 - Fabrication and dynamic compressive response of laminated ZrO-Zr2CN/Si3N4 ceramics
AU - Li, Liangjun
AU - Cheng, Laifei
AU - Fan, Shangwu
AU - Gao, Xiaoju
AU - Xie, Yupeng
AU - Zhang, Litong
N1 - Publisher Copyright:
© 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - Laminated ZrO-Zr2CN/Si3N4 ceramics with soft and hard interbedded layers and an in-situ interface were prepared via tape casting and reactive hot pressing, and the dynamic compressive response was investigated using a Split Hopkinson pressure bar tester at a range of high strain rates from 1.1×103 s-1 to 3.5×103 s-1. With increasing the strain rates, the duration and energy of transmitted wave decreased, but that of reflected wave as well as the failure strain increased continuously. The energy absorptivity kept at a high stable level. The four characteristic stages of the stress-strain curves were inelastic loading region, stable loading region, pseudoplastic deformation region and failure region. The laminated ceramics possessed longer stable loading region but shorter pseudoplastic deformation region at higher high-strain-rates. The failure model consisting of a three-part process of multi-reflection of stress waves, crack initiation and crack deflection at the interfaces was established.
AB - Laminated ZrO-Zr2CN/Si3N4 ceramics with soft and hard interbedded layers and an in-situ interface were prepared via tape casting and reactive hot pressing, and the dynamic compressive response was investigated using a Split Hopkinson pressure bar tester at a range of high strain rates from 1.1×103 s-1 to 3.5×103 s-1. With increasing the strain rates, the duration and energy of transmitted wave decreased, but that of reflected wave as well as the failure strain increased continuously. The energy absorptivity kept at a high stable level. The four characteristic stages of the stress-strain curves were inelastic loading region, stable loading region, pseudoplastic deformation region and failure region. The laminated ceramics possessed longer stable loading region but shorter pseudoplastic deformation region at higher high-strain-rates. The failure model consisting of a three-part process of multi-reflection of stress waves, crack initiation and crack deflection at the interfaces was established.
KW - Dynamic fracture behavior
KW - Dynamic loading pattern
KW - In-situ interfaces
KW - Laminated ceramics
KW - Soft and hard interbedded structure
UR - http://www.scopus.com/inward/record.url?scp=84929272489&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2015.03.067
DO - 10.1016/j.ceramint.2015.03.067
M3 - 文章
AN - SCOPUS:84929272489
SN - 0272-8842
VL - 41
SP - 8584
EP - 8591
JO - Ceramics International
JF - Ceramics International
IS - 7
ER -