...H. E. Cho; H. M. Zbib; M. F. Horstemeyer This study presents an irradiation-dependent internal state variable (ISV) elastoviscoplasticity-damage constitutive model that accounts for nuclear irradiation hardening and embrittlement of the irradiated polycrystalline materials. The irradiation effects...

.... This work is in part a work of the U.S. Government. ASME disclaims all interest in the U.S. Government's contributions. A7 Steel high strain rate stress state compression tension torsion dynamic strain aging negative strain rate sensitivity embrittlement During the late 1800s...

... of oxygen diffusivity and pressure factor. In the case of an existing surface microcrack, oxygen tends to accumulate around the crack tip due to the high stress level presented near the crack tip, leading to localized material embrittlement and promotion of rapid crack propagation. crack-edge stress...

... 2008 alloy steel bars cracks creep ductility elasticity embrittlement plasticity The research in heat-resistant steels for the application of fuel-fired power plants has progressed remarkably for the past 50 years , resulting in the improvement of electrical efficiency...

... interfacial adhesion leading to a reduction in tensile properties and embrittlement in the PP nanocomposite structure. These observations are similar to findings reported by Bharadwaj ( 6 ), Ding ( 8 ), Chow ( 16 ), and Alexander and Gilman ( 17 ). SEM images of fracture virgin and polypropylene...

... with aging at 800 °C and is uniquely correlated with high-temperature Charpy impact toughness. The current experiment has shown that the SP testing technique is useful in evaluating the degree of thermal aging embrittlement, one of the parameters required for remaining-life prediction of aged components...

... that obtained from the FATT master curve (FATT-MC) approach. Comparison of Charpy indices like FATT and upper-shelf energy for the service exposed steel to results for the virgin material reported in the literature and the compositional J-Factor estimates for temper-embrittlement susceptibility indicate...

... conditions (virgin, ex-service, heat-treated and welded) were taken to check the efficiency of the thermal treatment in reducing the embrittlement effects and to carry out a general assessment of the remaining life of the component related to creep behavior considering smooth bar creep specimens. [S0094-4289...

... October 15, 1999; revised manuscript received March 7, 2000. Guest Editors: Raj Mohan and Rishi Raj. 15 October 1999 07 March 2000 alloy steel embrittlement cracks welding precipitation grain boundary segregation creep fracture notch strength petroleum industry heat treatment...

...S. Murakami, Professor; A. Miyazaki, Graduate Student; M. Mizuno, Assistant Professor A model to describe the change in the inelastic and fracture properties of reactor pressure vessel steels due to neutron irradiation in the ductile region (i.e., irradiation embrittlement) is developed. First...