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Superplastic Bulging of Fine‐Grained Zirconia
Author(s) -
Wu Xin,
Chen IWei
Publication year - 1990
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1990.tb06585.x
Subject(s) - superplasticity , materials science , composite material , grain boundary sliding , ultimate tensile strength , cubic zirconia , tetragonal crystal system , stress (linguistics) , ductility (earth science) , phase (matter) , grain boundary , metallurgy , microstructure , ceramic , creep , linguistics , chemistry , philosophy , organic chemistry
A tetragonal zirconia containing 2 mol% Y 2 O 3 , with 0.3 mol% CuO addition as a grain‐boundary phase, was superplastically stretched at 1150°C using a hemispherical punch. Mechanical analyses were performed to establish that a biaxial tensile stress/strain state was achieved in the process with a maximal strain of 0.5 in the thinned hemispherical shell. The material was damage tolerant up to a critical strain rate, approximately 10 −3 s −1 .