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Effects of Rare Earth Elements on the Quality of Nugget in Aluminum Alloy Spot Welding Dong Jiantao1,2,a, Luo Zhen1,2,b *, Zhou Linshu1,2,c, Hao Jian1,2,d 1School of Materials Science and Engineering, Tianjin University, Tianjin, China 2Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin, 30072, China aTao861122@163.com, blz@tju.edu.cn, c soar-001@163.com, dHjddzxx163@163.com  Keywords: aluminum spot welding, nugget, rare earth element, strengthening Abstract.
The following expression is commonly used: σy =αPy –β (1) The ultimate strength σb is directly related to the maximum stress Pmax by means of expressions like the following: σb =αPmax –β (2) Where α, β are material parameters.
Acknowledgements This research was supported by National Nature Science Funds of China (grant 50975197), State High-tech Research and Development Plans (the 863 plans) (grant 2008AA04Z136), Project Funds for New Century Talents of Ministry of Education, Double-Five Science and Technology Projects of Tianjin municipality colleges (grant 2009E6-0020), Integration Project of Production, Teaching and Research of Ministry of Educational of Guangdong Province(grant 2007A0903021050), and Applied Basic Research Funds of Tianjin municipality (grant 09JCZDJC24000) References [1] LI Qing-song.
Journal of Nuclear Materials.
Journal of the Chinese Rare Earth Society.

Application of Reverse Engineering Technology on Beverage Packaging Chunsheng Tao1,a, Qiao Bai1,b, SongBai Ma1,c 1School of Material Science and Mechanical Engineering Beijing Technology and Business University Beijing, China,100048 ataochunsheng@th.btbu.edu.cn, bbaiqiao@th.btbu.edu.cn, cmasongbai@th.btbu.edu.cn Keywords: Reverse Engineering, Beverage Packaging, Data Processing, Model Abstract: This article briefly introduces the concept, processes and key technologies of reverse engineering.
Therefore, it is significant for the development of national economy and improvement of the science and technologies to study the reverse engineering technology.
There is no special requirements for the materials and reflective of the measured object.
It is not affected by the material and thickness of the object.
(in Chinese) [2] Y.H.Wang, W.Y.Wu, Reverse Engineering Oriented to Creative Design, Journal of Machine Design, 10(2007) 1-3.

Materials and Experimental Methods 2.1 Experiment Device This article uses the THz-TDS system which American Zomega Corporation develops, as is shown in figure. 2.
In the process of experiment, we select polyethylene powder as hybrid material which is approximately transparent in the THz wave band.
Acknowledgment This research work is supported by Natural Science Foundation of Zhejiang province of China (Grant No.
References [1] Anis Rahman, "Dendrimer based terahertz time-domain spectroscopy and applications in molecular characterization", Journal of Molecular Structure, Vol. 1006, Issue 1–3, 59-65, 2011
[2] Wei-en Lai, Huai-wu Zhang, Yao-hua Zhu, Qi-ye Wen, "A novel method to measure dielectric properties of materials in terahertz spectroscopy", Optik - International Journal for Light and Electron Optics, Vol. 124, Issue 20, 4085-4088, 2013

Study on Magnesium Hydroxide-based Hydrogen Peroxide Bleaching Process of Nigra Poplar CTMP Qiang Zhao 1,2, Dezhi Sun *2, MingYang Zhang 1, Sumin Kang 1 1.College of material Science and Technology,Beijing Forestry University.China 2.
Introduction Nigra poplar is widely used as an important material for pulp and paper industry in China.
Experimental Material The CTMP sample of Nigra poplar was provided by Shandong HuaTai Paper Corp.
As shown in Tab.4, the higher yield of bleached pulp were obtained with Mg(OH)2-based process than that with NaOH-based process, which indicated that the dissolution of organic materials from pulp fibers during Mg(OH)2-based bleaching was less.
TAPPI JOURNAL 3 (12):27-31

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Zhou, Journal of Alloys and Compounds, Vol. 504 (2010), p. 535-541

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Due to the concentrated heat generated by the laser beam, there are many resolidified materials and contaminants inside the Data Matrix symbol.
The readability of the Data Matrix code can be improved if the depth of the mark is increased during the product in-service, which may have an adverse effect on substrate materials.
As can be seen in Fig. 3(a) and (b), there are no new diffraction peaks or the displacement of diffraction peaks, so the nature of the phases and structures of substrate materials is unmodified and undeformed.
Acknowledgements This work was financially supported by NationalNatural Science Foundation (51375275).
Bhattacharyya: International Journal of Manufacturing Technology and Management, Vol. 24(2011), p. 1 [4] Ming-Fei Chen, Wen-Tse Hsial, Wei-Lun Huang, Chun-Wei Hu, and Yu-Pin Chen: Journal of Materials Processing Technology, Vol. 209(2009), p. 737 [5] Stefan Rusu, Aurelian Buzaianu, Laura Ionel, Daniel Ursescu, and Dan Gelu Galusca: Applied Surface Science, Vol. 259(2012), p. 311 [6] NASA: Applying Data Matrix Identification Symbols on Aerospace Parts(NASA Press, Washington DC 2008)

The experiments and simulation of titanium cutting based on AdvantEdge software Can Zhao1,a, Yunfei Guan2,b 1Heilongjiang Institute of Science and Technology, Harbin,China 2Heilongjiang Institute of Science and Technology, Harbin,China acanzhao@sohu.com , b594780627@163.com Keywords: titanium, simulation, AdvantEdge, cutting force Abstract.
Recently, the high temperature alloy material is widely used in the turbine, aircraft engine, like Titanium is a key material in aerospace manufacturing.
It makes titanium become one of the most difficult materials to machine.
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[8] Dong Liu, “The research on simulation of TC4 cutting”,Journal of Systems Simulation,2009

[5] S.K.Yen, S.H.Chiou, S.J.Wu, C.C.Chang, S.P.Lin, C.M.Lin, “ Charcterization of Electrolytic HA/ZrO2 Double Layers Coatings on Ti-6Al-4V Implant Alloy, Materials Science and Engineering C 26 (2006) 65-77
International Journal of Mechanical and Materials Engineering 4 (2) 21–24. 2009
European Journal of Scientific Research 34 (1) : 83-91. 2009
Ramous, (2008), Investigation of _____microstructure and properties of a Ni–Mo martensitic stainless steel, Materials and Design 29
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Experiments Materials Materials included IEF prepared by our laboratory, HCl, H3PO4, HNO3, NaOH, H2SO4, NaNO3 and NaCl produced by Beijing chemical plants; CH3COCH3, AgNO3 and EDTA by Beijing chemical reagent Co; p-dimethylaminobenzalrhodanine and phenothalin by Sinopharm Chemical Reagent Beijing Co.
Results and Discussion The effect of adsorption materials The IEF used in study included Poly Acrylo-amidino Diethylene triamine Fiber (PADAF) and Poly Acrylo-amidino Triethylene tetramine Fiber (PATAF).
Hazardous Materials. 7 (2007), p.30
Journal of Functional Materials/GongNeng CaiLiao (in Chinese). 42(11) (2011), p.2166-2170 [4] Wang Wenqing, Li Mingyu,Zeng Qingxuan.
Journal of Applied Polymer Science. 126 (2012), p.1733-1738 [6] He Min, Lan Xinzhe, ZhuGuocai.