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Numerical Simulation of Semi-solid Roll Strip-casting Process for AZ91D Magnesium Alloy Zhiming Du1,2,a, Shuisheng Xie2,b, Ping Wu 2,c and Yanying Zhang3,d 1 State Key Laboratory for Fabrication and Process of Nonferrous Metals, General Research Institute for Nonferrous Metals, Beijing 100088, P.R.China 2 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P.R.China 3 School of Mathematics and Computer Science, Harbin Normal University, Harbin 150025, P.R.China a duzm@263.net, bxiess@mail.grinm.com.cn, cpingwu2005@yahoo.com.cn, dduzm@263.net Keywords: semi-solid; magnesium alloy; continuous roll strip-casting; DEFORM-3D; simulation Abstract.
Introduction Magnesium alloys are expected to play an important role in next-generation materials, which have possibilities of contributing to reducing the total product weight when magnesium can be used to replace aluminum and mild steel.
When alloyed, magnesium has the highest strength-to-weight ratio among the metallic materials for structural applications.
Moreover, because of the ease of recycling of metallic materials, magnesium has received global attention from the standpoint of environmental protection [1].
Acknowledgements This work was supported by the National Natural Science Foundation of China (Grant No.50674017).

Introduction The design and development of composite materials is one of the most important advances in the history of manufacturing materials.
Materials E-glass fibers are the most common of all reinforcing fibers for polymeric matrix composites.
Hardness of the composite materials was measured using Rockwell hardness tester.
Joseph, Development and characterization of liquid carbon fibre reinforced aluminium matrix composite, Journal of Materials Processing Technology, vol.209, (Dec. 2008) 4809 – 4813
[8] Hasim Pihtili, An experimental investigation of wear of glass fibre – epoxy resin and glass fibre – polyester resin composite materials, European Polymer Journal, vol. 45, (Jan. 2009) 149 – 154

Acknowledgement Projects supported by National Natural Science Foundation of China (No. 50571073) and Natural Science Foundation of Shanxi Province (No. 20051052) Reference [1] LI Zhi-qiang, XU Zhou, LI Xiao-ping, WANG Shuo, Materials Review, 2002, 16(2): 9-11
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Finite element analysis of interfacial stress of Mg-baced composites reinforced with short fiber Weixue Li 1,2,Shuguang Du 2,Jianfeng Dai 1,2,Qing Wang 1,2 1State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology, Lanzhou 730050 2School of Sciences, Lanzhou University of Technology, Lanzhou 730050, China lwx@lut.cn Keywords: Finite element; Magnesium Matrix Composite; Length; Diameter Abstract: In elastic deformation range, this paper reports a finite element study of effect of length and diameter of the fiber on intrfacial stress of AZ91D metal matrix composites reinorced by short fiber.
The shaded region, OAFE, represents a fibre and is entirely embedded in a matrix material (unshaded region), both fibre and matrix materials are homogeneous and isotropic.
Table 1 Material properties Material Young’s modulus(Gpa) Poisson’s ratio AZ91D Mg 45 0.35 SiC 400 0.25 The material properties were baced on commonly accepted values.
The material properties are shown in Table 1.
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Also, composite materials bended with polymers are gaining lingering applications.
In half breed composite materials there are two distinct materials are used in a grid.
Exploration exercises in the field of regular fiber materials brought about this material having discovered applications in the assembling of composite molecule sheets, warm covers and building materials.
Comparison of strengths of the materials for all 3 composite sheets 5.
International Journal of Innovative Research in Science, Engineering and Technology 5( 7), 66-70 (2016)

Recently, the similar materials are used to do the experiment both at home and abroad, yet it can't reflect the original nature and others of rock fissure in original rock mass.
Since the similar material are made of synthetic materials，it cannot reflect the original rock nature-like fissure and mechanical properties and so on.
Laboratory model test In this experiment, collected one large size of undisturbed sample of Tertiary mudstone from one project in Nanning, Guangxi,China, which is used as materials of laboratory model test of surrounding rock in underground tunnel.
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This way paid high premium over meso-fracture for materials’ failure simulation.
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The Pb(Nb2/3Zn1/3)0.03(Zr52Ti48)0.97O3 ceramics materials was prepared by a conventional mixed oxide method.
This kind of PZT ceramic materialS have been widely researched.
The system’s raw materials are Pb3O4, ZrO2, TiO2, Nb2O5 and ZnO powder with the purity more than 99%.
Lee, in: The piezoelectric properties and the stability of the resonant frequency in Mn–Cr Co-doped PSZT ceramics, Journal of Materials Science: Materials in Electronics Vol. 10-2 (1999), p. 81 [5] BOUTARFAIA A.
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Liu, Synthesis and optical nonlinear property of Y-type chromophores based on double-donor structures with excellent electro-optic activity, Journal of Materials Chemistry C. 2 (2014) 5124.
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