耐熱Ni基合金のデジタル画像相関法による高温高ひずみ計測と延性破壊評価

深澤 大志; 北村 優太; 幸本 宏治; 環野 直也

doi:10.1299/jsmemm.2022.OS0511

セッションID: OS0511

DOI https://doi.org/10.1299/jsmemm.2022.OS0511

会議情報

主催: 一般社団法人日本機械学会

会議名: M&M2022 材料力学カンファレンス

開催日: 2022/09/26 - 2022/09/28

耐熱Ni基合金のデジタル画像相関法による高温高ひずみ計測と延性破壊評価

*深澤大志, 北村優太, 幸本宏治, 環野直也

著者情報

キーワード: Ni-based superalloy, Digital image correlation method, Hight temperature, Ductile fracture, Stress triaxiality, Lode angle parameter, Modified Mohr-Coulomb ductile fracture model

会議録・要旨集認証あり

詳細

抄録

Tensile and compression tests at 850℃ were conducted by using 6 types of specimen for ductile fracture evaluation of Ni-based superalloy. The digital image correlation method was applied to measure the strain during the tensile tests. Fracture strain, Lode angle parameter and stress triaxiality were obtained by the finite element analysis of the tensile and compression tests. These parameters were used to calibrate the material parameters of the modified Mohr-Coulomb (MMC) ductile fracture model.

責任著者(Corresponding author)

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