Results 261 to 270 of about 161,193 (307)

Creep oxidation behaviour and creep strength prediction for Alloy 617

International Journal of Pressure Vessels and Piping, 2010
Abstract Creep experimental data was obtained by a series of creep tests with different stress levels at 950 °C for Alloy 617. Oxidation behaviour was investigated by observing the microstructures of fractured specimens after the creep tests.
Woo-Gon Kim, Song-Nan Yin, Gyeong-Geon Lee, Yong-Wan Kim, Seon-Jin Kim   +4 more
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Creep Strength Assessment of High Chromium Ferritic Creep Resistant Steels

Materials Science Forum, 2007
Degradation mechanism and life prediction method of high chromium ferritic creep resistant steels have been investigated. In the high stress condition, easy and rapid extension of recovered soft region results in significant decrease in creep strength, however, ductility is high. In the low stress condition, extension of recovered soft region is mainly
Kazuhiro Kimura, Kota Sawada, Yoshiaki Toda, Hideaki Kushima   +3 more
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Modelling creep of high strength concrete

Computers & concrete, 2010
Recent developments in concrete mixing made possible the production of concretes with high compressive strength showing, simultaneously, high workability. These concretes also present high strengths at young ages, allowing the application of loads sooner.
D. Dias-da-Costa, E.N.B.S. Julio
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Creep strength of magnesium-based alloys

Metallurgical and Materials Transactions A, 2002
The high-temperature creep resistance of magnesium alloys was discussed, with special reference to Mg-Al and Mg-Y alloys. Mg-Al solid-solution alloys are superior to Al-Mg solid-solution alloys in terms of creep resistance. This is attributed to the high internal stress typical of an hcp structure having only two independent basal slip systems ...
Kouichi Maruyama, Mayumi Suzuki, Hiroyuki Sato   +2 more
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Creep Fatigue Behavior of Creep Strength Enhanced Ferritic Steels

Journal of ASTM International, 2011
Abstract Creep Fatigue knowledge is necessary for meaningful reliability assessment of existing power generating plant because cyclic operation of an aging power plant fleet requires better understanding of factors affecting damage initiation and propagation, as well as technologies and methods to predict damage accumulation for ...
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Relation between creep strength and strength for specific creep strain at temperatures up to 1200 °C

Materials Science and Engineering: A, 1997
Abstract The relation between strength for 1 and 2% creep strain and creep rupture strength has been developed and verified. Analogously, the relation between steady-state creep rate and time to specific creep strain has been found for formed Ni-base alloys and austenitic steels of types NiCr15Fe, NiCr28FeSiCe, Cr25Ni20Si, Cr20Ni10Si and Cr18Ni11Ti ...
Vladimír Bína, Jan Hakl
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Study on Creep Strength Test of High-Strength Geogrid

2009
In this paper, indoor creep test under unconfined conditions was conducted for two typical types of high-strength geogrid, one of which was applied to practical roadbed engineering, where creep observation is taken for a continuous year. Test result shows that creep rate under unconfined conditions is almost 2 times of that under confined conditions if
Q. R. Yan, W. D. Deng, C. Z. Deng
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Long-Term Creep Strength Property of Advanced Ferritic Creep Resistant Steels

Advances in Materials Technology for Power Plants, 2010
Abstract Long-term creep strength property of creep strength enhanced ferritic steels was investigated. Stress dependence of minimum creep rate was divided into two regimes with a boundary condition of macroscopic elastic limit which corresponds to 50% of 0.2% offset yield stress (Half Yield).
K. Kimura, K. Sawada, H. Kushima
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Creep of high–strength concrete and normal–strength concrete

Magazine of Concrete Research, 1991
The development and use of high–strength concrete has been evolutionary. High–strength concrete is used for tall buildings, bridges, long–span structures and offshore platforms. Very little information is available on the creep of high–strength concrete compared with that of normal concrete at room and low temperatures.
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Creep and Long-Term Strength of Structures

2020
The issue of evaluating strength and service life is discussed as applied to structures performance of which is characterized by multi-parametric nonstationary thermal-mechanical effects. The major degradation mechanisms of structural materials are considered. In the framework of mechanics of damaged media, a mathematical model describing the processes
Ivan Volkov, Leonid Igumnov, Svetlana Litvinchuk   +2 more
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