Results 171 to 180 of about 9,560 (208)

On the Brittle-to-Ductile Transition Fracture Behavior

1993
Brittle-to-ductile transition behavior is one important aspect in the material behavior of ferritic steels. Because of the many influencing parameters involved, the transition behavior is known to cause great difficulties in its theoretical treatment and modeling as well as in the development of a sufficiently reliable empirical correlation.
T Varga, DH Njo
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Brittle‐to‐Ductile Transition in Silicon Carbide

Journal of the American Ceramic Society, 1989
Observations of the microstructure and creep behavior of two commerical silicon carbides are presented. A combination of techniques has been used to characterize the microstructures. Sequential creep rupture testing has been carried out and scanning electron microscopy used to observe creep‐crack propagation and damage development.
Geoffrey H. Campbell, Brian J. Dalgleish, Anthony G. Evans   +2 more
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Prediction of brittle-to-ductile transitions in polystyrene

Polymer, 2003
Abstract In this study it is attempted to predict brittle-to-ductile transitions (BDTs) in polystyrene blends, induced either by an increase in temperature or by a decrease in inter-particle distance. A representative, two-dimensional volume element (RVE) of a polystyrene matrix with 20% circular voids, is deformed in tension.
H.G.H. van Melick, L.E. Govaert, H.E.H. Meijer   +2 more
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Effects of water on the brittle to ductile transition of sandstones

2023
Geothermal energy is one of the renewable energy sources that can help mitigate climate change. Rocks are elasto-plastic materials at low pressure and temperature, and the deformation is accommodated along localized shear bands (brittle behavior); at high pressure and temperature rocks are elasto-visco-plastic and the deformation is homogeneous ...
Francesco Lazari, Marie Violay, Florence Begue   +2 more
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Brittle-to-Ductile Transition in Silicon Nitride

1992
Since silicon nitride is hard to sinter, it is general to sinter with small amounts of sintering aids, such as Al2O3 and Y2O3. Therefore, very thin glass phase formed at the grain boundary has an influence on high temperature mechanical properties of sintered silicon nitride.
Y. Mutoh, K. Yamaishi, N. Miyahara, T. Oikawa   +3 more
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The brittle to ductile transition in a soda–lime–silica glass

Journal of Non-Crystalline Solids, 2000
The brittle to ductile transition (EDT) occurring in a standard window glass around T-g has been studied both theoretically and experimentally by introducing artificial cracks in glass specimens tested in bending at different temperatures with different displacement rates.
Rouxel, Tanguy, Sangleboeuf, Jean-Christophe   +1 more
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The brittle-to-ductile transition in cold rolled tungsten: On the decrease of the brittle-to-ductile transition by 600 K to − 65 °C

International Journal of Refractory Metals and Hard Materials, 2018
Abstract This paper attempts to elucidate fundamental mechanisms of the brittle-to-ductile transition (BDT) in textured, pre-deformed, polycrystalline body-centred cubic metals. For this purpose, five tungsten sheets have been rolled out from one and the same sintered ingot representing degrees of deformation of 1.8, 2.5, 3.0, 3.4, and 4.1 ...
Bonnekoh, Carsten, Hoffmann, Andreas, Reiser, Jens   +2 more
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Brittle-to-ductile transition in steels and the critical transition temperature

International Journal of Fracture, 1983
Specimens of different thickness made of a low-alloy steel were tested to determine fracture toughness under static and impact loading at room and low temperatures. It was found that for the specimen of each thickness there was a specific brittle-to-ductile transition temperature Tps defined as the upper temperature boundary up to which plane-strain ...
A. J. Krasowsky, Yu. A. Kashtalyan, V. N. Krasiko   +2 more
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The Brittle to Ductile Transition In MgAl2O4 Spinel

1995
The brittle to ductile transition in ceramic materials is often referred to as the ductile to brittle transition in the metallurgical literature.1–4 It has been a topic of interest in crystalline ceramics for nearly half a century, since the early efforts to develop “ductile” ceramics in the 1950’s. Although there have been efforts to address the topic
Ronald L. Stewart, Richard C. Bradt
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A brittle to ductile transition in ice under tension

Philosophical Magazine A, 1984
Abstract Experiments have revealed a brittle to less-brittle transition in polycrystalline ice Ih slowly strained (10−6 s1) under uniaxial tension at temperatures from −20°C to −5°C. The transition occurs at a ‘critical grain size’ (≃ 1–5 mm) where the stress to nucleate cracks equals the stress to propagate them.
E. M. Schulson, P. N. Lim, R. W. Lee
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