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The prelimary study of the welds between Mg and Al by friction stir welding Ying Chena*, Changbin Shenb and Jiping Gec Liaoning Key Materials Laboratory for Railway and School of Materials Science and Engineering, Dalian Jiaotong University, 794# Huanghe Road ,116028,Dalian,China aemail:lndlflying@126.com, bemail: shencb@djtu.edu.cn, cemail:ge@djtu.edu.cn * The corresponding author, Tel.:+86-411-84106806, e-mail:lndlflying@126.com postal address: Liaoning Key Materials Laboratory for Railway & School of Materials Science and Engineering, Dalian Jiaotong University, 794# Huanghe Road ,116028,Dalian,China Keywords: dissimilar material; friction stir welding; defect; intermetallic compound Abstract.
However, a study on FSW Mg/Al dissimilar materials was reported less.
The presence of liquid between Al and Mg can cause the two materials to separate during stirring.
Materials Science and Engineering R,Vol. 50(2005),p. 1-78 [2] Joelj D.
Welding journal, Vol.80 (2001),p. 30-34 [3] A.

Therefore rapid removal of material can be avoided.
Spelt, Modeling the development of Almen strip curvature in vibratory finishing, Journal of Materials Processing Technology, 209, 6 (2009) 2923-2939
Park, Micro deburring for precision parts using magnetic abrasive finishing method, Journal of Materials Processing Technology, 187-188 (2007) 19-25
Journal of New Materials for Electrochemical Systems, 9 (2006) 439-445
Zaleski, Effect of brushing parameters upon edge states after wire brushing of AZ91 HP magnesium alloy, Advances in Science and Technology, 20, 7 (2013) 55-60

Electrical discharge machining is the most extensively non-conventional machining process used to obtain complicated shapes with high accuracy in a wide variety of materials.
The effects of the small plasma channels of the discharges are heating, melting and vaporization of electrodes materials.
The tool electrode materials used in this study were pure copper (wire of 120 μm and 190 μm diameter) and graphite (350 μm diameter).
Heamawatanachai , Orbital electrode actuation to improve efficiency of drilling micro-holes by micro-EDM, Journal of materials processing technology 2 0 9 ( 2009) 1826–1834
Zuyuan, Prediction of aspect ratio of a micro hole drilled by EDM, Journal of Mechanical Science and Technology 27 (1) (2013) 185-190

The method of using the pressure transducers to measure heterogeneous materials such as ceramic and concrete has been developed in recent years.
Wang: Journal of Ningbo University (natural science and engineering edition), Vol. 13 (2000), P. 82 [2] D.N.
Zhou: International Journal of Impact Engineering, Vol.25 (2001), p.869 [5] F.Q.
Willians: Journal of Application Physics.
Seaman: Journal of Application Physics, Vol. 45(1974), p. 4303 [8] R.

Negligible factors in bulk materials, such as grain-size effects, have proven inappropriate to be neglected for micro-forming processes.
Typical brittle materials such as these carbon-steel strips show little plastic deformation.
Ni, Material behavior modelling in micro/meso-scale forming process with considering size/scale effects, Computational Materials Science. 43 (2008) 1003-1009
Lai, Size effects in thin sheet metal forming and its elastic–plastic constitutive model, Materials and Design. 28 (2007) 1731-1736
Koc, Investigation of size effect on material behaviour of thin sheet metals using hydraulic bulge testing at micro/meso-scales, International Journal of Machine Tools & Manufacture. 48 (2008) 1014-1029

Preparation and Performance of Ni-CU/SDC Anodes Changyu Li 1 , Zhe LV2* 1Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin, 150040, P.
China 2 Centre for Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, P.
Then Ni-Cu/SDC composite anode materials were prepared.
The maximal power density could reach 126mW.cm-2 at 700 ℃.Thereby, Ni-Cu/SDC composite materials are good anode materials.
The composite anode materials match well with the SDC electrolyte in thermal expansion.

Modern maintenance trends using non-destructive checking allow to detect the state of these materials in service without breaking their integrity.
The magnetic properties research of these materials and the subsequent design of new structures for scanning elements will enable non-destructive monitoring of the state of the ropes steel material of static constructions, especially their anchoring.
Magnetizing characteristics of the steel materials grade 12 used for manufacturing the steel ropes and the steel socket basket of the rope ends were subjected to the magnetometric measurements at the Department of Physics, Faculty of Electrotechnics, TU Košice.
Motavalli, Three-Dimensional Localization of Defects in Stay Cables Using Magnetic Flux Leakage Methods, Journal of Naval Science and Engineering 22 (2004) 93–101
Pan, Characterization of Wire Rope Defects with Gray Level Co-occurrence Matrix of Magnetic Flux Leakage Images, Journal of Nondestructive Evaluation 32 (2013) 37–43

Natural products as corrosion inhibitor for metals in corrosive media—a review. materials letters, 62(1), 113-116
Indian Journal of Science and Technology, 8(17), 1
International Journal of Electrochemical Science, 3(5), 528-555
Arabian Journal for Science and Engineering, 38(1), 85-97
The Malaysian Journal of Analytical Sciences, 18(1), 28-36.

Materials The batch formula was normal.
Other materials were all purchased commercially.
Because of different raw material, processing and preparation method, different kinds of carbon black have different morphology and properties.
Acknowledgement The authors are grateful to National Natural Science Foundation of China (No. 50773034) and department of Science and Technology of Shandong province, P.R.China (No. 2008BS04028 and No.2009ZRB01071) for financial support of this project and are also grateful to Qingdao Municipal Science and Technology Commission for financial support in part of this project (No. 08-1-3-18-jch) References [1] G.T.Mohanraj, T.K.Chaki, and A.Chakraborty: Journal of Applied Polymer Science Vol.92(2004), p.2179 [2] A.R.Azura, Suriati Ghazali, and M.Mariatti: Journal of Applied Polymer Science Vol.110(2008), p.747 [3] Q.Q.Yang, J.Z.Liang: Applied Physics Letters Vol.93(2008) [4] Q.H.Zhang, D.J.Chen: Journal of Materials Science Vol.39(2004), p.1751 [5] L.Shen, Z.Y.Zhang, and J.J.Wang: Polymer Materials Science and Engineering Vol.22(2006), p.107 [6] Y.W.Wong, K.L.Lo, and F.G.Shin: Journal of Applied Polymer Science Vol.82(2001), p.1549 [7] G.M.Nasr, M.M.Badawy, and S.E.Gwaily
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