IGTC-118 Dynamic Fatigue of Sintered Si_3N_4(Organized Session IV CERAMICS FOR GAS TURBINES AND TURBOCHARGERS)

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概要

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• Sintered Si_3N_4 is a promising material for use in high temperature structural component such as rotors in advanced gas turbine engines owing to its excellent high temperature strength. Sintered Si_3N_4 has high toughness because it has composite microstructure with elongated Si_3N_4 grain and grain boundary phase. The cyclic fatigue behavior in sintered Si_3N_4 exhibits both time dependent and cycle number dependent features. Alternating load accelerates the fatigue more severely than pulsating load. The fatigue limit appears to exist in the S-N curve. Effects of mean stress and amplitude stress on the fatigue behaviors in sintered Si_3N_4 can be fitted to the modified Goodman relation.

• 公益社団法人日本ガスタービン学会の論文

著者

• Soma T.

  Materials Research Laboratory Ngk Insulators Ltd.

• Oda I.

  Materials Research Laboratory, NGK INSULATORS, LTD.

• Matsui M.

  Materials Research Laboratory, NGK INSULATORS, LTD.

関連論文

• IGTC-118 Dynamic Fatigue of Sintered Si_3N_4(Organized Session IV CERAMICS FOR GAS TURBINES AND TURBOCHARGERS)

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