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Simulation of Recrystallization Behavior and Austenite Grain Size Evolution during Hot Deformation of Low Carbon Steel Using the Flow Stress Jian Wanga, Hong Xiaob, Hongbiao Xiec, Xiumei Xud School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China National Engineering Research Center for Equipment and Technology of Cold Rolling Strip State Key Laboratory of Metastable Materials Science and Technology ajwang@ysu.edu.cn, bxhh@ysu.edu.cn, chbxie@ysu.edu.cn, dxxm@ysu.edu.cn Keywords: Recrystallization; Flow stress; Hot Deformation; Grain Size; Dislocation density Abstract.
The kinetics of recrystallization is connected with dislocation density, but in real materials, recrystallization is almost independent from dislocation density.
Acknowledgements The authors would like to thank the Natural Science Foundation of Hebei Province of China (E2009000397) and the State Key Laboratory of Metastable Materials Science and Technology of Yanshan University.
The authors are likewise grateful to Professor Svyetlichnyy of the AGH University of Technology and Science.
Mead: Computer Journal.

On account of high solubility and low viscosity of hyperbranched polymers, it is possible to find their use in crosslinking processes to explore available polymer materials in industry.
Polyurethanes (PUs) are unique polymeric materials with a wide range of physical and chemical properties [3,4].
Recently, hyperbranched polymers have been used as the ascrosslinking agents to synthesize the PU and other materials [5-7].
Up till now, however, few attempts have been made to prepare the waterborne hyperbranched polyurethane materials and their application in applied fields especiallyin coatings and adhesives is rarely reported.
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Materials and Methods Growth Media.
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In the determination of plane strain fracture toughness test [9], CT specimen is recommended by ASTM E1547, especially used for assessment and research of the nuclear pressure vessel materials.
Fig.2 The relationship between C*and A Fig.3 Solution on * by RSM Projects of solution to creep fracture mechanics parameter C* based on RSM Four ideal elastic-power creep rate materials with different creep coefficient and creep exponent shown as Table 1 are used to research RSM for solving the creep fracture mechanics parameters C*.The data of material 1 and material 2 in Table 1 are derived from 1Cr0.5Mo and 1.25Cr0.5Mo respectively when they are at 538 degrees, and the other two materials are hypothetical.
Tab.1 Mechanical property utilized in C* calculation MATERIAL Material1 175 9.03 0.3 Material 2 175 9.36 0.3 Material 3 175 9.03 0.3 Material 4 175 9.03 0.3 Using finite element analysis software - ABAQUS, the element type selects eight node quadratic reduced integration element (CPE8R), and width is 24mm, and meshing is shown in Fig. 4.
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Seismic damage simulation of arch dam Considering the heterogeneity intrinsic to concrete materials, the authors have proposed a procedure to take into account the influence of this heterogeneity in the seismic damage simulation of concrete dams[4][5].In the presented paper, this procedure was employed to model damage process of an arch dam through Monte-Carlo analysis.
The uncertainty in ground motion input (peak ground motion), materials properties of concrete and heterogeneity of concrete are considered. 3.
In the current research, the numerical approached was used, the uncertainty in ground motion input and material properties of concrete was considered.
Acknowledgements This work was financially supported by the National Science Foundation of China (51009019).
Tekie: Journal of Infrastructure Systems Vol. 7(2) (2001), p. 41-48

Measuring the mechanical property of wood materials according to vibration has been proved a successful method [3-4].
Since board is a continuous system, based on the vibration theory of continuous system, linear elastic isotropic materials should be chosen as material attribute.
(In Chinese) [3]Moslemi A A: Forest Products Journal.
Hunt, etc.: Forest Science.
[8]Sebera V, Tippner J, Šimek M, etc.: European Journal of Wood and Wood Products, (2014), p.1-4.

The material properties employed in the simulation is listed in Table 1.
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HC≡CH + CH3COOH —→ H2C = CH-COOCH3 2)Ethylene law: law of ethylene to ethylene and acetic acid as raw materials, in a palladium - gold as catalyst, acetic acid potassium or sodium acetate as catalyst promoter, activated alumina or silica gel as the carrier, in more than 100 ℃, pressure reaction with vinyl acetate.
The tail end of the long net type washing machine parts sent to squeeze dewatering device and materials, dewatering device adopts three rollers, roller pressure is by means of adjusting to control the moisture content of the pure poly (vinyl alcohol).
in cement, asbestos board, ceramic materials and polymer matrix composites has been widely used. 3.Conclusion Due to pva fiber dyeing and low elasticity of faults is not easy to overcome, shrinking in the field of taking in recent years.
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They have also been identified as novel material with potential for technology entry in mainstream technologies.
Research on new functional materials for electronic devices for mainstream applications (e.g. logic, memory) and micro- and nanosystems for medical, life science, analysis and instrumentation, automotive and consumer applications will share a high communality on the near-term and long-term perspective.
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