Creep behaviors evaluation of Incoloy800H by small punch creep test
作者： Sisheng Yang , Xiang Ling , Yangyan Zheng
DOI: 10.1016/J.MSEA.2016.12.092
关键词: Creep 、 Composite material 、 Diffusion creep 、 Necking 、 Reference stress 、 Stress relaxation 、 Deflection (engineering) 、 Materials science 、 Austenite 、 Structural engineering 、 Damage tolerance
摘要: Abstract In this paper, creep properties estimation of Incoloy800H under various loads and temperatures were performed experimentally analytically. Compared to standard test, a similar character could be obtained by small punch test. On the basis geometrical shape deformed specimen, we proposed modified model. The relatively simple yet accurate correlation between strain deflection was established. reference stress multi-axial deformation state discussed proved as constant at identical condition. Additionally, analyze tertiary fracture mechanism damage tolerance factor introduced modified. results indicated that necking precipitate coarsening domain model in phase. Meanwhile, physical significance three stages deflection-time (D-T) curve different with uniaxial curve.
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