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Experimental Materials and Methods Experimental Materials.
It is generally believed that grain refinement can improve the strength and hardness of materials, but the fine grain can be harmless to toughness.
However, excessive grain refinement will inevitably increase the deformation resistance of materials, so the grain size of materials must be controlled in an appropriate range.
Hosford, Spheroidization cycles for medium carbon steels, J Metallurgical and Materials Transactions A 33 (2002) 1255-1261
Tao, On-line spheroidization process of medium-carbon low-alloyed cold heading steel, J International Journal of Minerals, Metallurgy, and Materials 21 (2014) 26-35

It is shown that the heat treatment in the air contributes to retrieve the status of a material with lower specific magnetic losses.
Acknowledgments The research was supported in part by the Ministry of Education and Science (UrFU, State contract № 2582) References [1] M.
Magnetic properties of FeSiB thin films displaying stripe domains, Journal of Magnetism and Magnetic Materials 321 (2009) 806–809
Gubernatorov, Combined thermomagnetic and laser treatments of anisotropic electrical materials, The Physics of Metals and Metallography, 111 (2011) 464-470

Technique Research on Strength Estimation of Pile Foundation Based of Model Analysis Zhengjun Wang1,a ,Qiang Wang 2,b ,Chunhua Liu 1,c ,Kun Hu 1,d and Dianhong Zhang 1,e 1 School of Architecture Engineering, Heilongjiang University, 150086, China 2 School of Physical Science and Technique , Heilongjiang University, 150086, China awzjsir@163. com, bwangqiang@yahoo.com.cn, cliuchunhua_588@163.com, dhukun460@163.com, edianhong678@126.com Keywords: Pile Foundation; Cement Concrete; Strength Estimation; Mathematical Model Abstract.
The size of the cubic squares is 150×150×150mm3，and we need to make 30 such squares of designed strength level .We use 425 ordinary Poland cement as the raw material, with stone pieces and medium-sized sand whose maximum particles are less than 40 mm.
Zhang . submitted to Journal of Applied Geophysics (2006) [3] I.N.
Abo-Qudais. submitted to Construction and Building Materials (2005) [6] Ramazan Demirbog˘a, I˙brahim Tu¨rkmen, Mehmet B.
U submitted to NDT&E International (2004) [8]CAO Huo, JIANG Li-sheng, WU Xiao-dong, KANG Zhong-shou. submitted to East China Highway(2001)( in Chinese) [9] LI Feng-lai, ZHOU Qinq-xiang, ZHU Jing-cheng, SHI Jia-zhi, ZHENG Jing. submitted to Architecture Science,(2000).

Materials and Methods Material Preparation.
Acknowledgements This work was supported by the Ministry of Science and Technology International Cooperation Project (18-509J), Research Found of Science and Technology Bureau for the International Cooperation Project of Guangdong Province (2009B050800011).
Biochemical Engineering Journal 21:1 (2004), p: 93-101.

Producing Bioflocculant by UV Mutagenesis WAN Ying-xin, SHI Lei, WU Li-ping, TANG Pei-jing The College of Arts and Sciences of Beijing Union University, Beijing, 100083, China E-mail: wyx@ygi.edu.cn Keywords: Bioflocculant, UV mutation，Screen Abstract.
Materials and Methods Microorganism and Cultivation.
The flocculating activity was measured using a suspension of kaolin clay as test material.
Acknowledgement This study was financially by the Natural Science Foundation of Beijing Municipal Commission of Education (Project No.
World Journal of Microbiol & Biotechnology.

Analysis and Collision Simulation Research of the Latest Underrun Protective Device Jin-fa XIE1,a and Yan-qiang CHENG1,b * 1Henan university of science and technology, Luoyang, China, 471003 ajfxie821@163.com, bcyqzpp@yeah.net *corresponding author Keywords: Rear underrun protective device, The swinging type, Rear end collision.
The material of the latest rear guard device is carbon structural steel.
The basic material properties of the protective frame material Modulus N/m2 Poisson ratio Density Kg/m3 Shear modulus N/m2 Tensile strength N/m2 Yield strength N/m2 No. 45 steel 2.09×1011 0.3 7.89×103 8.23×1010 6.0×108 3.55×108 Fig.1.
Improvement and Simulation of the Bumper in the Rear of a Truck[J].JOURNAL OF XIHUA UNIVERSITY (NATURAL SCIENCE EDITION),2007,26(3):27-30.

Experimental Procedure Materials and Specimen The material of the dual phase steel using in this paper is DP590, galvanized with a coating thickness of 60 um.
Acknowledge This research was supported by National Nature Science Foundations of China (NO. 50905111) and Shanghai Automotive Industry Science and Technology Development Foundation (0907).
Yamaguchi: Quarterly Journal of the Japan Welding Society Vol. 24(1) (2006), p.10-16 [5] H.

The material used was a stainless steel 304 plate with dimensional size of 150×100×10mm.
Acknowledgements This work was supported in part by the National Natural Science Foundation of China (51175095), the Guangdong Provincial Natural Science Foundation of China (10251009001000001, 9151009001000020) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (20104420110001).
Jeonghan: Journal of Materials Processing Technology, Vol. 201 (2008), pp. 521-525

Numerical Optimization Design on Coating of EPC Steel Casting Xiumei Zhang 1,a, Huijun Jia 1, Di Cui 1, and He Liang 2,b 1 Langfang College of Vocation and Technology，Langfang, China； 2College of Material Science and Engineering, University of Science and Technology Beijing, Beijing, China a zhangxiumeiliang@163.com, b lianghe163@yeah.net Key words: numerical optimization, coating, expandable pattern casting Abstract.
Silvain: Journal of Materials Processing Technology , Vol.209 (2009) ,p.4103

Mesh and Material Characteristics HyperMesh is applied to meshed the model and check mesh quality[5].
Element type of frame was shell 181, properties were shown as that: material is 16MnL; density is 7.8×10-9t/mm3; thickness is 1.5mm; elastic modulus is 2.1×105MPa; Poisson ratio is 0.3.
Acknowledgements This work was financially supported by the Fujian Natural Science Foundation (2010J01007).
A new test for cleaning efficiency assessmen of cleaner for had surfaces[J].Journal of surfactants and detergents,2004,11.7(04):355-362
[4] Yudong Yang,Lishun Li.Finite Element Static Analysis of Folded Fork lift Truck Frame Model Based on UG[J].Science Technology and Engineering,2009,9(8):2157-2158