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The research of materials field shows that the plastic deformation of material is caused by constant movement and proliferation of dislocations under the action of stress.
Acknowledgements This work was supported in part by the National Natural Science Foundation of China under Grant Nos. 51105216 and the Shangdong Province Excellent Young and Middle-Aged Scientists Research Awards Fund under Grant Nos.
Chinese Journal of Mechanical Engineering; 2005, 41(2):2-3
Materials Science and Engineering: A. 2003, 344(1-2): 20-30
Modeling of Texture Evolution for Materials for Hexagonal Symmetry Application to Zirconium and Titanium a Alloys or Near a Alloys [J] Acta Materialia. 1995, 43(4):1619-1630

Some theoretical approaches to the interpretation of deformation processes in polycrystalline materials are known.
Flournoy, Transition from pitting to fatigue crack growth - modeling of corrosion fatigue crack nucleation in a 2024-T3 aluminum alloy, Materials Science and Engineering A, 219 (1996) 126-132
Panin, Fatigue failure mechanism of polycrystalline materials at the mesoscopic level, Russian Physics Journal 39 (1996) 534-547
Nykyforchyn, Effect of hydrogen on the kinetics and mechanism of fatigue crack growth in structural steels, Materials Science, 33 (1997) 504-515
«Mechatronic Systems and Materials», 1-3 July, Vilnius, Lithuania, 2013, 188.

Titanium alloys are favorable implant materials for orthopedic applications, due to their desirable properties such as good corrosion resistance, low elasticity modulus, and excellent biocompatibility.
Thus, many researchers have been seeking alternatives to these titanium alloys in an attempt to obtain materials with similar (or higher) mechanical strength, smaller elasticity modulus, and better biocompatibility.
Claro: Journal of Materials Science Vol. 43 (2008), p. 5977
Sinning: Internal Friction in Metallic Materials: A Handbook (Springer-Verlag, Heidelberg 2007)
Mehrer: Diffusion in Solids: Fundamentals, Methods, Materials, Diffusion-Controlled Processes (Spinger-Verlag, Berlin 2007).

Introduction In recent years, with the purpose of solving the expanded electromagnetic interference (EMI) problems, considerable attention has been devoted to new type EM wave absorbing materials [1- 6].
Nevertheless, since metallic magnetic particles have high electrical conductance, so the relative complex permeability of metallic magnetic materials may decrease due to eddy current phenomenon induced by electromagnetic wave.
Obviously, the Fe(χ-C-Fe-Si/SiC) nanocapsules possess a remarkable ability as microwave absorption materials because of the defect microstructure and high resistivity.
,which would be significant for their use as electromagnetic wave absorption materials in the microwave range.
Zhao: Journal of Inorganic Materials(Chinese). 18 (3) (2003), p. 580

Materials Research Bulletin, 34(1): 35−42
Progress in Materials Science, 51(7)：881-981
Progress in Materials Science, 53(6): 893–979
Advanced Materials Research, 97-101: 1109-1115
Key Engineering Materials, 104-107: 507-522.

Thus, in the process of making products, materials can’t flow well, the heat is not stable and the product’s thickness is not uniform.
It could well avoid burning materials which may be caused by mold’s high heat.
And taking a coating treatment by using special materials which have nice thermal conductivity can increase the mold’s heat conduction coefficient.
Because of the short and non-uniform heating time, materials flow badly.
Crawford, Effect of nucleating agents and cooling rate on the microstructure and properties of a rotational moulding grade of polypropylene, Journal of Materials Science 36 (2001) 2151-2161 [7] R.J.

At present, the epoxy resin is mostly applied to paint, insulating materials for electric appliances, prepreg, construction materials, building materials and binding agent.
The carbon nanotube has good mechanical properties and a high length-diameter ratio, it can be used as the reinforcement in composite materials.
Li, Materials Science and Engineering A, 471, 169-173. (2007) [2] F.
Rezende, Materials Research, 8, 1, 91-97. (2005) [9] L.
Jana, Journal of Power Sources, 182, 223-229. (2008)

FEM for brake discs of SiC 3D continuous ceramic reinforced 7075 Aluminum alloy for CRH3 trains applying Emergency Braking Liang Yu1,a, Yanli Jiang1, Senkai Lu2,b, Hongqiang Ru3,c and Ming FANG3,c 1Key laboratory of new processing technology for nonferrous metals & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China 2Department of Physics and Information Technology, Guilin Normal College, Guilin 541001, China 3Key laboratory for anisotropy and texture of materials (MOE), school of materials and metallurgy, Northeastern University, Shenyang 110004, China asyyuliang@163.com, bjiangyanli024@163.com, cruhq@smm.neu.edu.cn Keywords: Finite Element Method (FEM); high-speed train; Disc Brake; temperature field; Abstract.
Because of high temperature difference the material is exposed to high stress.
Materials and Design,Vol. 31,(2010),p.712–722 ,
Journal of Materials Processing Technology ,Vol. 209, (2009), p.6124–6133
Lu ,et al. 1st World Congress on Integrated Computational Materials Engineering, (2011) TMS.

Ibraheem, Materials Science and Technology 16, 1267 (2000)
Kluken, Journal of Materials Processing Technology 45, 497 (1994)
The institute of Materials, University Press, Cambridge (1997)
Yue, Materials Science and Engineering A 528, 803 (2011)
Progress in Materials Science 48(2003)171–273

Data material and processing The Multiple source data was adopted in this study, namely, combining the remote sensing, economic statistic material and data to obtain some elements and factors of eco-environment status in Shiyang River Basin, and then the eco-environment assessment system in Shiyang River Basin was built.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China, (No.41261104; No.41271133), the National Social Science Foundation Youth Project of China, (No.12CTJ001), Gansu Province Fund Projects of Youthful Science and Technology, (No.1107RJYA077).
Ecological environment quality evaluation,China Environmental Science Press,(2004)
Journal of Natural Resources, Vol. 21(2006), p. 615-624(in Chinese)
Chinese Journal of Ecology, Vol. 25(2006), p. 880-884(in Chinese)