Prevention of Surface Cracks on Billets by Refining Austenite Grain of Bloom Surface before Rolling
نویسندگان
چکیده
منابع مشابه
Characterization of Surface Wave Scattering by Surface Breaking Cracks
Various analytical methods based on the real reciprocity relation are applied to the problem of Rayleigh wave scattering by a surface crack. In one formulation, the reflection coefficient observed at the transducer terminals is expressed in terms of an integral over the crack surface of the product of the perturbed and unperturbed fields. This integral is then converted to a volume integral and...
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In this research, variant selection of martensite transformed from ultrafine-grained (UFG) austenite fabricated by accumulative roll bonding (ARB) process and subsequent annealing was investigated with respect tomorphology of parentaustenitic phase. The results show that the original shape of austenite grain is very effective factor in determiningthe preferred variants of martensite transformed...
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The resonance phenomenon observed in Rayleigh wave scattering from surface-breaking cracks has been investigated using Freund's results on reflection of Rayleigh waves from an infinite crack edge. To model the crack as a section of acoustic waveguide, resonances are treated as standing waves in the length and depth directions. The model takes both faces of the crack into consideration, and this...
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ژورنال
عنوان ژورنال: Tetsu-to-Hagane
سال: 2007
ISSN: 1883-2954,0021-1575
DOI: 10.2355/tetsutohagane.93.271