Crack Growth Characteristic and Damage Evaluation under Creep-Fatigue Interactive Condition for W-Added High-Cr Steel
نویسندگان
چکیده
منابع مشابه
The Fracture Mechanics Concept of Creep and Creep/Fatigue Crack Growth in Life Assessment
There is an increasing need to assess the service life of components containing defect which operate at high temperature. This paper describes the current fracture mechanics concepts that are employed to predict cracking of engineering materials at high temperatures under static and cyclic loading. The relationship between these concepts and those of high temperature life assessment methods is ...
متن کاملVery High Cycle Fatigue Failure Analysis and Life Prediction of Cr-Ni-W Gear Steel Based on Crack Initiation and Growth Behaviors
The unexpected failures of structural materials in very high cycle fatigue (VHCF) regime have been a critical issue in modern engineering design. In this study, the VHCF property of a Cr-Ni-W gear steel was experimentally investigated under axial loading with the stress ratio of R = -1, and a life prediction model associated with crack initiation and growth behaviors was proposed. Results show ...
متن کاملThe Unified Creep-Fatigue Equation for Stainless Steel 316
Background—The creep-fatigue properties of stainless steel 316 are of interest because of the wide use of this material in demanding service environments, such as the nuclear industry. Need—A number of models exist to describe creep-fatigue behaviours, but they are limited by the need to obtain specialized coefficients from a large number of experiments, which are time-consuming and expensive. ...
متن کاملDevelopment of Advanced Creep Damage Constitutive Equations for Low Cr Alloy under Long-term Service
.............................................................................................................. 3 ACKNOWLEDGEMENTS .......................................................................................... 5 DECLARATION ......................................................................................................... 6 PUBLICATIONS LIST .......................................
متن کاملEffect of Boundary Condition on Pre-Existing Crack Under Fatigue Loading
In this paper, the present investigation has been conducted keeping in mind some of the problems concerning the crack propagation direction and growth under constant loading in an inclined crack geometry. The present studies mainly focused on the development and modifications in the crack growth criterion to account the biaxial, shear loading and number of stress terms. Existing criteria for th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Japan Institute of Metals
سال: 2012
ISSN: 0021-4876,1880-6880
DOI: 10.2320/jinstmet.76.624