518 超高温下における窒化けい素セラミックスの時間依存型変形(OS 耐熱材料)

概要

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The tensile and compressive stress-strain responses and cyclic stress-strain response were investigated for sintered silicon nitride ceramics at elevated temperatures, using the ultra-high temperature-use- extensometer which was developed in the authors' laboratory. The large inelastic strain, which is greatly dependent on stress rate, was produced under tensile, compressive and cyclic push-pull triangular wave loadings in this material at 1300℃. Furthermore, inelastic strain decreases with increase in the number of loading cycles at 1300℃, showing increase in resistance to deformation in cyclic loading process. It was found from these tests that inelastic strain is easier to generate under tensile loading than under compressive loading.
一般社団法人日本機械学会の論文
2000-11-24