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Online since: July 2011
Authors: Yan Feng Wang, Chang Ming Qiu, Chun Guang Lu, Lina Zhang
It can be seen that there are twins at the early stage, and with the increase of deformation degree, the density of twins increase which leads to grain refinement and carbide precipitation.
It can be seen that there are dislocation groups, stacking faults, crossing of stacking faults with twins and crystal grain be refined.
With the increase of deformation, a large number of high density deformation twins appear.
Online since: September 2011
Authors: Min Wang, Li Fang Zhang, Hai Yan Luan
As visible light accounts for the large proportion of the solar spectrum, therefore, the development of visible-light-driven photocatalysts has become one of the most challenging topics recently.Rencently, a great number of novel semiconductor photocatalysts have been developed, such as BiVO4[10],InVO4[11], Bi2WO6 [12] and so on.
With further increasing temperature to 750℃, XRD patterns of the prepared samples showed sharper,which indicated a better crystallinity and increase in grain size.
Apparently, the crystal size of the samples increased with the calcination temperature, which implied that high temperature favored the stage of the grain growth according to the theory of thermodynamic nucleation and growth.
Online since: August 2013
Authors: Tang Yang, Li Cui Xia
However, the affecting factors of livestock production are intricate and complicated, and there exits the characteristic of the uncertainty and non-linear between livestock production and a number of their affecting factors, the traditional forecasting methods to solve such highly nonlinear problems has great limitations, therefore, based on the analysis of affecting factors of livestock production the models we established are more able to reflect the internal relations and development trend of the livestock production changes.
National natural science foundation “the research on benign competition and cooperation development mechanism of breeding and grain production based on grain security in northeast region” (71173035).2.
Online since: October 2014
Authors: Gheorghe Brabie, Robert Stefanut Teaca
Micro and mini formability is closely related to the number of grains involved in forming process.
The grain size of micro and mini formed materials should be reduced as the pattern size to be formed decreases.
Online since: May 2014
Authors: Toshihiko Sasaki
Most industrial materials are polycrystalline aggregate having fine grains.
X-ray stress measurement theory for use of two-dimensinal detector If incident X-rays are inclined from a sample normal and the Debye ring is measured, the independent strain εL33 (referred to as εα below) of sufficient large number for stress calculation will be obtained from the whole Debye ring.
This shows that the specimen surface may have fine and random oriented crystal grains.
Online since: December 2010
Authors: Ying Tong
Introduction Aluminum alloy has some advantageous properties that make them an excellent choice for a number of applications.
Metallurgical properties such as the microstructure, alloy constants, grain size and grain form, and non-metallic inclusion content, whilst having a small effect on the strength and the hardness, have a significant effect on the ductile fracture criteria.
Online since: June 2013
Authors: Zhe Jun Zhang, Yu Luo, Du Yan
Vendor support and utility adoption of the CIM for managing distribution systems will help reduce the long-term costs of application and system integration at a time when the number of integration points is increasing.
Business process languages, such as BPEL, extend the service concepts by providing a method of defining and supporting orchestration of the fine grained service into more coarse-grained business services, which in turn can be incorporated into workflows and business processes.
Online since: December 2013
Authors: Wen Qiang Gong, Yong Sheng Zhang
Lower salt section is rhythm interbedded by brown and smoke gray halite, medium-bedded, medium - coarse grain structure, translucent, with thin mudstone and anhydrite; middle salt section dominated by brown rock salt, with small amount of smoke gray rock salt, medium - fine grain structure, sandwiched multilayer mudstone laminate; upper salt section mainly is smoky gray rock salt, medium-bedded.
The Sr/Cu ratios of SJ1 reflect the similar regulation of paleoclimate fluctuation, although they are higher than usual number.
Online since: January 2020
Authors: Ekaterina S. Gerasimova, N.Yu. Kamalova
Despite the existing researches devoted to the problem of utilization of quartzitic wastes the percentage of their use remains insignificant and the number of the identified directions is insufficient.
The surface of the coarse grains is covered with dust particles which are held by electrostatic forces.
Characteristics of the dry mixes Indices Value for all mixes Requirements of Russian standard 31358-2007 Humidity [%] 0.1 ≤ 0.2 Dmax [mm] 2.5 ≤ 5.0 Quantity of grains of Dmax [%] 2.5 ≤ 5.0 Table 5.
Online since: January 2012
Authors: Wei Ping Sun
Introduction With the aim of refining austenite grains and/or controlling recrystallization and precipitation kinetics during hot rolling and subsequent cooling or coiling, thermomechanical processing (TMP) has been extensively applied to the development and production of conventional high strength steels over the last forty years [1,2].
This means that a far lower total reduction is employed during hot rolling at a CSP® than at an integrated mill for a sheet steel product with the same final gauge, which influences the kinetics of recrystallization, precipitation and grain refinement.
To evaluate the impact toughness and crash resistance of these products, a number of V-notch Charpy specimens were prepared from as-produced steels according to ASTM E23-05, and then tested at the ambient temperature.
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