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标题
ceramics in multilayers
内容
Compared to metals, ceramics are lacking in room temperature plasticity and fracture toughness, because of a high lattice fraction stress on most slip systems at low temperatures. In the competation between dislocation glide and brittle fracture in ceramics at low temperatures, brittle fracture wins since the stresses necessary to activate dislocation glide are significantly higher than fracture stress. However, localized dislocation activity in ceramics at room temperature has been observed underneath the indenter.
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