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Effects of the Processing Parameters on the Forming Quality of Stainless Steel Parts by Selective Laser Melting Qingsong Wei a, Xiao Zhao b, Li Wang, Ruidi Li, Jie Liu, Yusheng Shi State Key lab of Materials Processing and Die&Mould technology, Huazhong University of Science and Technology, Wuhan, China 430074 awqs_xn@163.com,bzhaoxiao200711@163.com Keywords: Selective Laser Melting; Rapid Prototyping; Stainless Steel; Molten Pool Abstract.
Materials and methods Equipment and Principle.
Test Materials and Experiments.
The SLM process uses 316L stainless steel powders(400 mesh) as test material.
[11] Weihui Wu and Yongqiang Yang : Journal of Mechanical Engineering In Chinese Vol.43 (2007),p.175-180.

Effect of MCM-41 and SBA-15 Mesoporous Molecular Sieves on Properties of PMMA-based Composite Na Wang1, 2, a, Jiao Wang1, b, Jing Zhang1, c, Chi Ma1, 2, d and Erfan Chen1, 2, e 1School of Material Science and Engineering, Shenyang University of Chemical Technology, Liaoning Shenyang, 110142 2Education Department of Liaoning Province, Key Laboratory of Applied Technology of Polymer Materials, Shenyang University of Chemical Technology, Liaoning Shenyang, 110142  aiamwangna@sina.com, bwwjj100200@126.com, czhangjing7902@163.com, dlg_365@163.com, ecef5566@163.com Keywords: PMMA; Organic-montmorillonite; MCM-41; SBA-15; Nano-composite Abstract.
In the literature, combining two nano-materials with different shapes and sizes may generate more effectively enhanced effect due to the expected synergistic effect [11].
Experimental Sections Main Material.
Methyl methacrylate (MMA, ≥ 99.5 %), Tianjin Kermel Chemical Reagent Co., Ltd ; Benzoyl peroxide (BPO), Shenyang Dongxing Reagent Factory; Mesoporous molecular sieves MCM - 41 (without template) and SBA - 15 (without template), preparation by our laboratory [15~16], the properties of them are listed in Table 1; Organic montmorillonite, Zhejiang Fenghong New Material Co., Ltd.
Zhang: Chinese Journal of Materials Reserch Vol. 19 (2005), p. 94 [10] N.

It still has positive affect on enlightening the architect in original design, local condition design, rural material design.
There are two ways to achieve ecological adaptability, which are local conditions and local materials.
The design practice should be guided by the theory that can circumvent weaknesses and point out a right development direction in support of advanced science and technology.
The designer tries to make it simple and easy, simple to build and easy to get the material in the geographical expression of the design.
Secondly, to improve humid heat environment surrounding the envelope structures of the building and to enhance the insulation performance of the wall, roof and the thermal performance of the windows, the designer uses perforated bricks plus external insulations in the wall, extruded boards plus tiles on the roof, plastic steels plus hollow glasses in the windows for better thermal insulation; Thirdly, taking advantage of ecological materials, the use of reproducible and recycled materials could reduce the damaging effects on the nature; Fourthly, stairwell, hallway, toilet and other auxiliary rooms are arranged on the north of main rooms like bedrooms and living rooms as a buffer space.

Design of Bulk Solid Flow Control System Zhaolong Fan1, a, Jianhui Zhao1, b, Fan Li 1,c and Sun Rong2,d 1School of Instrument Science and Optical-Electronics Engineering, Beihang University, Beijing 100191, China 2Quality and technical supervision and Testing Center, Luoyang, 471000, Henan Province acoolfzl2008@163.com,bzhaojianhui@buaa.edu.cn,clifan@buaa.edu.cn,d34410119@qq.com Keywords: C8051F020, PID, Digital filter, Modbus Abstract.
When the impulse bulk solid flow controller is working, the material falls to the impacting plate freely from the discharge outlet of hopper, the sensor connected with the impacting plate feels the impulsion of material on the impacting plate, and the model is built in allusion to the force situation of impacting plate [3], as shown in Figure 1.
Actually, is very small generally, the falling time of material is very short, so we can ignore air resistance in this process to obtain the complete formula: （1） In the formula (1): G—weight flowed by the material in unit time; g—acceleration of free falling body; l —length flowed by the material on the impacting plate; —average speed flowed by the material on the impacting plate; and f—coefficient of friction.
Journal of TAIYUAN University of Technology.2009, 40(2):143-145
Soot mass flow measurement system using triboelectricity and ultrasonic [J] Advanced Materials Research.2012, 433-440

Acknowledgments The support from (a) the National Science Foundation through grants CMS-0638728 and CMS0639428, (b) the Commonwealth of Pennsylvania, Department of Community and Economic Development, through the Pennsylvania Infrastructure Technology Alliance (PITA), and (c) the U.S.
Bahkt, eds., Multi-Science Publishing Co., Ltd., England (invited paper, submitted)
Journal of Bridge Engineering, ASCE, 8(6), 374- 382
[17] Kong, J.S., and Frangopol, D.M. 2005, Sensitivity Analysis in Reliability-Based Lifetime Performance Prediction Using Simulation, Journal of Materials in Civil Engineering, ASCE, 17(3), 296-306
Journal of Structural Engineering, ASCE, 131(4), 600- 616

Materials of underground structure include reinforced concrete, concrete filled steel tube, steel-reinforced concrete, steel, etc..
Journal of the Structural Division, ASCE,Vol.95(6) (1969),p.1213
(Shanghai station of the building materials industry market management,China,2009).
Science Technology and Engineering, Vol.12(1) (2012),p.76
Journal of the China Railway Society, Vol.34(2)(2012),p.100.

A series of physical and chemical changes take place and hydration heat is released when cementitious materials mixed with water.
Based on the exothermal rate and hydration heat, hydration rate and degree of cementitious materials can been estimated.
Mechanical properties can also reflect the reaction degree of cementitious materials.
Experiment Raw materials.
References [1] Zhang Qian, Song Liang, Li Jiahe: Natural Science Journal of Harbin Normal University.

Mathematical Modeling and Optimization of Fluidized Layer Carbonitriding Process for 1C 25 Steel MARIAN IULIAN NEACȘU1, a,*, SORIN DOBROVICI2, b 1,2Department of Materials Science, University of „Dunarea de Jos” Galati, Romania a, *uscaeni@yahoo.com, bsorin.dobrovici@ugal.ro Keywords: thermo-chemical treatment, carbonitriding, mathematical model, optimization, energy balance Abstract.
Introduction Providing the most suitable materials for technological applications is one of the most important concerns of materials engineering.
In this respect, the application of thermochemical treatments is one way of obtaining the desired properties for the materials [1,2].
Ivanescu,  Transferul de masa la procesarea materialelor metalice (Mass transfer processing of metallic materials), Ed.
Prawoto, et al., Carbon restoration for decarburized layer in spring steel, Journal of Materials Engineeringand Performance, 13(5), (2004) 627

Models of Dislocation Formation and Mechanical Twinning by Local Reversible Martensitic Transformations in FCC Nanocrystals Alexander Tyumentsev1,2,a, Igor Litovchenko1,2,b 1Institute of Strength Physics and Materials Science, Siberian Brunch of Russian Academy of Sciences, 2/4, Akademicheskii Ave., 634050, Tomsk, Russia 2 Siberian Institute of Physics and Engineering of National Research Tomsk State University, 1, Novosobornaya Sq., 634050, Tomsk, Russia atyumets@phys.tsu.ru, blitovchenko@spti.tsu.ru Keywords: dislocations; twinning; plastic deformation; martensitic transformations; nanocrystals.
Introduction Now there is considerable evidence [1–6] that the deformation of nanocrystalline (NC) and submicrocrystalline (SMC) metallic materials proceeds by the mechanism of mechanical twinning.
Therefore, in our opinion, for materials with an originally high phase stability, the probability that the above deformation mechanism will be realized in fields of high local stresses is very high as well.
In conclusion, it should be stressed that in materials which show rather high phase stability the above reversible MT’s develop in fields of high local stresses.
Surikova, Russian Physics Journal 47 8 (2004) 818-839

The high rheological properties of SCC have a relationship with the material compositions which are binder, aggregate, admixture, powder materials and water etc.
Materials and Structures, 2007, 40(9): 889-896
Materials and Structures, 2006, 39:683-693
[10] Xu Dinghua, Feng Wenyuan, Practical guidance for concrete material, Beijing: Chinese Building Materials Industry Press, 2005
Materials and Structures, 2006, 39: 81-91