منابع مشابه
Calculation of grain-size statistics and parameters
,where 84, 16, 95, and 5 represent the phi values at 84, 16, 95, and 5 percentiles. Folk (1968) presented a verbal classification scale for sorting: <0.350: very well sorted; 0.35-0.500: well sorted; 0.5-0.710: moderately well sorted; 0.71-1.00: moderately sorted; 1.00-2.00: poorly sorted; 2.00-4.00: very poorly sorted; and, >4.00: extremely poorly sorted. 4. "skewness" measures the degree to w...
متن کاملThe Effect of Hot Deformation Parameters on Grain Size Refinement in a Martensitic Stainless Steel
The grain size refinement of AISI 422 martensitic stainless steel in the temperature range of 950-1150 ºC was investigated by hot deformation tests. The deformed specimens were held at deformation temperature with delay times of 5 to 300s after achieving a strain of 0.3. The austenite grains exhibit a considerable growth at temperature higher than 1050˚C, while the grain coarsening is negligibl...
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Diffraction peak profile analysis (or Line Profile Analysis, LPA) has recently been developed to such an extent that it can be applied as a powerful method for the characterization of microstructures of crystalline materials in terms of crystallite size-distribution and dislocation structures. Physically based theoretical functions and their Fourier coefficients are available for both, the size...
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In this paper, we present a method for overlapping communications on parallel computers for pipelined algorithms. We rst introduce a general theoretical model which leads to a generic computation scheme for the optimal packet size. Then, we use the OPIUM 3 library, which provides an easy-to-use and eecient way to compute, in the general case, this optimal packet size, on the column LU factoriza...
متن کاملScheduling and grain size control
Locality and storage management considerations for fork-join parallelism lead to the loss of the important List Scheduling property. The worst case performance of the constrained scheduling policies, called PaH and ToS, is very bad: (nearly) all parallelism is lost. “Practical” performance, however, differs radically from worst case performance. The PaH and ToS policies perform on average withi...
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ژورنال
عنوان ژورنال: ISIJ International
سال: 1994
ISSN: 0915-1559
DOI: 10.2355/isijinternational.34.923