منابع مشابه
High-Strength Bainitic Steels
With careful design, mixed microstructures consisting of fine plates of upper bainitic ferrite separated by thin films of stable retained austenite have exhibited impressive combinations of strength and toughness in highsilicon bainitic steels. The silicon suppresses the precipitation of brittle cementite leading to an improvement in toughness. The essential principles governing the optimisatio...
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The ever-increasing demand for high data storage capacity has spurred research on development of innovative technologies and new storage materials. Conventional GByte optical discs (DVDs and Bluray) can be transformed into ultrahigh capacity storage media by encoding multi-level and multiplexed information within the three dimensional volume of a recording medium. However, in most cases the rec...
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This paper presents a study about the bond of high strength concrete with high strength steel. Fourteen pull out tests were carried out to determine the bond. The concrete strength was about 70 MPa and the steel was a 500 MPa grade. Bar diameters used were 12, 16, 20, 25, 28, 32 and 36 mm. In order to investigate the effect of cover, each test was done twice, once in a 240 mm diameter concrete ...
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For the strength analysis of unidirectional laminae an unit cell approach is illustrated. The unit cell is modeled with an approximate voxel mesh instead of a conventional mesh. Strengths are determined with continuum damage mechanics. A fracture energy formulation is applied to alleviate mesh dependency in the softening behavior. For direct loads the unit cell shows good capabilities for the p...
متن کاملhigh-strength bainitic steels
with careful design, mixed microstructures consisting of fine plates of upper bainitic ferrite separated by thinfilms of stable retained austenite have exhibited impressive combinations of strength and toughness in highsiliconbainitic steels. the silicon suppresses the precipitation of brittle cementite leading to an improvement intoughness. the essential principles governing the optimisation o...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1954
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.40.3.157