3-2B22 SCG の進展に伴う R- 曲線効果について
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概要
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The mechanical behaviors and the microfracture mechanisms of a high-purity dense Si_3N_4 and its 25 vol% SiC-platelet composite have been investigated in the range of 1400-1520℃ by means of extensive mechanical testing coupled to TEM and SEM observation. Both lifetime elongation and increased flaw tolerance were well explained by an algorithm incorporating into mechanical driving force acting on the crack tip, the closure-field contribution due to the rising R-curve behavior of the material.
- 1994-10-07
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