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Observed through microscope, most metal material is composed of many small grains.
The traditional materials science thinks that the materials with small grains have better general mechanical properties (such as stretched intensity, tenacity, plasticity and so on) relatively, and the size of grain can still affect the tired intension of metal [2].
Honeycombe, in: Steels: Microstructure & Properties (Metallurgy & materials science), edited by Edward Arnold (July 2000)
[2] Yu Degang, Tan Yuxu, in: Structure Strength of Steel—Structure and Obdurability, edited by Shanghai Science and Technology Pub, Shanghai (1983)
Journal of East China University of Science and Technology, Vol. 26(2000), No. 2, p. 188-189, 211

Experimental Study on Refractory Weathering Steel Cold-rolled Sheets Recrystallization Annealing Deming Yao 1, a, Yongjun Zhang 1,b , Jingtao Han1,c , Manying Chen1,d 1 School of materials science and engineering; University of Science and Technology Beijing, China a yaodeming@163.com, b zhangyj@mater.ustb.edu.cn, c hanjt@ustb.edu.cn, d chenmanying0822@126.com Keywords: cold-rolled sheet; recrystallization temperature; recrystallization annealing time; metallographic structure; mechanical properties Abstract.
Therefore, recrystallization annealing after cold rolling is one of important physical metallurgy process, but also an important means of controlling and changing the organization, texture and property of metallic materials.
Experimental material and processes Experimental materials.
Substrate sample tested on cold-rolled mill of University of Science and Technology Beijing, after the cold rolling thickness is 1mm, the total cold-rolled rolling reduction rate is 66.7%.
Journal of Wuhan University of Science and Technology, 29, (5): 499-451.

Ethylenediamine-Functionalized Carbon Nanotubes and Nylon-6 Composites ZHOU Qionga, HU Yinchunb, SUN Xiangnana, and WENG Yongjia Department of Material Science and Engineering, College of Science, China University of Petroleum (Beijing), 102249 Beijing, China acuppolymer@163.com, byinchunhu117@163.com Keywords: Carbon nanotubes; Nylon-6; Composites; Crystallization Abstract: Carbon Nanotubes (CNTs) are functionalized with ethylenediamine by chemical cut and grafting process.
Science.
Applied Materials and Interfaces.
Science.
Journal of Materials Chemistry.

The basic parameters of the model material are shown in Table 1.
The friction coefficient of common MEMS materials is generally 0.18~0.35[11].
Journal of Detection & Control，30(2008),pp. 54-59 [2] Fuze Design Manual Editorial Group.
Science Technology and Engineering，11(2011), pp.2479-2482 [9] Liu C.
Materials Science and Engineering, 483(2011), pp. 699-704 [10] Tan Y.J.

China 2 School of Mechanical & Power Engineering, East China University of Science and Technology, Shanghai 200237, P.R.
The material of the cladded layer is Co-based [7].
Acknowledgments This research is finacially supported by the Natural Science Foundation of Jiangsu Province (No.BK2005054), the National Natural Science Foundation of China (Grant No.50675089), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(Grant No. 06KJB460018/05KJD460045) and the Innovation Program of Graduated Student of Jiangsu Province (xm06-45, 05-32).
Zhang: Journal of Jiangsu University, Vol. 23(1) (2002), p. 1-4 [4] Y.
Zhang: Key Engineering Materials, Vols. 315-316(2005), p. 264-268

Acknowledgements The authors are grateful to the National Natural Science Foundation of China (№50275066, 50675088) and Jiangsu Natural Science Foundation (BK2006077，2007562) for support of this project.
(Chang Chun: Jilin Press of Science and Technology, China 1997), pp.18-21(In Chinese)
Zhang: Key Engineering Material, Vols. 259-260 (2004), pp.278-281
Chinese Science Bulletin, 1996, 41(6) pp.520~524 [8] G.C.
Journal of Harbin Institute of Technology.

[9]American Society For Testing Materials.
:Journal of the mechanical behavior of biomedical materials Vol. 21 (4) (2013), p. 67
:Materials Science and Engineering C Vol. 49 (8) (2015), p. 517
Metallic materials - Instrumented indentation test for hardness N.
[17] American Spciety For Testing Materials ASTM.

In the process of LSP, the pulsed laser-induced shock wave pressure impacts on the sheet metal surface, the plastic deformation of target is produced and stress-strain fields are induced within materials.
First is the material information accepted from the materials database supervisor (PFMAT) of MSC.Fatigue code, total life is calculated on the basis of the S-N curve of material shown in Fig.4.
Generally speaking, this is related to the work hardening of materials.
Noster and et al: Materials Science and Engineering A355 (2003), p. 216
Yang: Chinese Journal of Lasers Vol.33 (2006), p. 419.

Materials Observed from the appearance of the soil samples of the test and the research, the expansive soil is color off-white soil, heavy clay, a certain amount of calcium and iron and manganese nodules.By the free expansion test, particle analysis test and a series of laboratory experiments, the basic physical properties indicators of the soil and weathered sand is measured, showing in Table 1, Table 2 below.
South-to-North Water Transfers and Water Science and Technology, 2012
Northwestern Seismological Journal, August, 2011 [5] X.
Journal of Engineering Geology, 2009
Journal of Geo technical and Geo-environmental Engineering, ASCE, 2001.

Material and Method This research had passed ethical clearance from the Faculty of Medicine, University of North Sumatera, Medan.
The research material was pomegranate fresh (Punica granatum) of 20 kg collected from North Sumatra.
Journal of bone and mineral research. 9(6), 843-854, 1994 [11] Edrizal B, Bergman T, Trimurni A, Deddi Prima P, and Basri, AG.
The Journal of rheumatology, 38(9), 1844-1857, 2011 [22] Santiago-Mora R, Casado-Diaz A, De Castro M, and Quesada-Gomez J.
Journal of Musculoskeletal And Neuronal Interactions, 6(1), 47, 2006 [26] Walsh MC, and Choi Y.