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When comparing with the other composite materials, the micro-structure of concrete has its own features: the cracks often happen at the interface due to the dramatic strength difference between the aggregates and the mortar.
International Journal of Solids and Structures, 3(2006) 583-612
[9] Bazant, Z.P., Size effect in blunt fracture: concrete, rock, metal, Journal of Engineering Mechanics, 4(1984) 518-535
[10] Carpinteri, A., Scaling laws and renormalization groups for strength and toughness of disordered materials, Int J Solids Struct, (3)1994 291-302
Li, A random medium model for simulation of concrete failure, Science China Technological Sciences, 5(2013) 1273-1281

Application Research on Expert System of Incremental In-plane Bending Tang Wenting 1, a, Tang Chaoli2, Huang Lei2 and Yang He1 1 School of Materials Science & Engineering, Northwestern Polytechnical University, Xi'an 710042, China 2 School of Materials Science & Engineering, Xi'an University of Technology, Xi'an 710048, China a tangwt@xaut.edu.cn, xuttwt@sohu.com Keywords: incremental in-plane bending; expert system; database; Visual Basic; Matlab Abstract.
Journal of Materials Processing Technology.
[3] Yingjun Jin, Takashi Kuboki, Makoto Murata: Influence of strip materials on behavior of incremental in-plane bending [J].
Journal of Materials Processing Technology, Vol. 162(40) (2005), p.190-195 [4] Gao jun, Liangming: Integration methods of artificial intelligence technology and application study in Plastic Processing [J].
The first edition, Science Press, Beijing (2005).

The MIM process was developed from the traditional shape-making capability of plastic injection molding and materials flexibility of powder metallurgy.
Acknowledgment This study partly was supported by Science Fund of Ministry of Science, Technology and Innovation (MOSTI) of MALAYSIA (SF 03-03-02-SF0148) References [1] Hu Youhua, Li Yimin, He Hao, Lau Jia and Tang Xiao, “Preparation and Mechanical Properties of Inconel 718 Alloy by Metal Injection Molding, Rare Metal Materials and Engineering, 2010, 39(5):0775-0780 [2] G.
Sarma, “Influence of Modified Processing on Structure and Properties of Hot Isostatically Pressed Superalloy Inconel 718”, Materials Science and Engineering A 418 (2006) 282-291 [3] Davies, P.; Dunstan, G.; Hoyward, A.
Advances in Powder Metallurgy and Particulate Materials, 1997, 18(5): 99 [5] German R.
T., Ïnfluence of Surfactant on the Behaviors of Injection- Molded Alumina Suspensions”, Material Science & Engineering A289 (2000) 116-112 [11] Baiyun H., Shuquan L. and Xuanhui Qu,”The Rheology of Metal Injection Molding”, Journal of Materials Processing Technology 137 (203) 132-137 [12] M.Khakbiz, A.sinchi, R.Bagheri, Analysis of the rheological behavior and stability of 316L stainless steel Ti.C powder injection molding, Elsevier Materials Science and Engineering A 407 (2005) 105–113

Acknowledgement This work was supported by State Key Lab of Materials Processing and Die & Mould Technology.
Watkins, Materials Science and Engineering A243 (1998) 305–315 [2] M.
Chatterjee, Materials Characterization 54 (2005) 327– 337 [3] R.W.
Mishra Materials Science and Engineering A363 (2003) 268–274 [8] G.
Materials Science and Technology. 2007（23）368-373 [10] Bulent Kurt, Nuri Orhan, Ertan Evin, Adnan Çalik.

Effects of heat treatment on microstructure and properties of AZ91D magnesium alloy Ming Wu1，a, Fang Long2，b, Haoran Gen3，ab* and Fang Yangc a School of Materials Science and Engineering, University of Jinan, Jinan 250022, China b Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China C School of Materials Science and Engineering, Liaoning Technology University, Fuxin 123000, China *Corresponding author Email: mse_genghr@ujn.edu.cn Key words: AZ91D magnesium alloy; solid solution; aging; microstructure; corrosion resistance Abstract: The microstructure, hardness and corrosion resistance of AZ91D alloy were investigated under different solution treatments and artificial aging conditions.
Small black dot material are dispersed β phases.
Materials Science and Engineering A, 2001, 302(5): 37 45
Materials Science and Engineering: A, 2009, 517(20):138
The Chinese Journal of Nonferrous Metals (in Chin.), 2008, 18(9): 1596

Phosphate rock is a kind of important chemical mineral raw materials, which is mainly used to produce phosphate and phosphate &compound fertilizer.
Ma Hong-yun and some others in Tiandi science and technology Co.
The Scrubbing off mud processing method is applied here which is a good process to produce high quality raw materials needed for producing high efficient phosphoric fertilizers.
Science and technology guide, 2011 (17): 91-91.
Journal of Wuhan University of science and technology, 2010, 33(3): 314-318.

Interfacial Properties and Critical Avalanche Exponents of Shape Memory Alloys and Related Materials E.K.H.Salje Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, UK ekhard@esc.cam.ac.uk Keywords: domain boundaries, twin walls, martensites, ferroelastic, co-elastic, avalanches, energy exponents Abstract.
In these materials pinning is very weak in ferroelastic fluorites [11] and damping does not occur in virtually defect-free materials such as SrTiO3 [12].
Resonance damping was found in materials with oxygen defects as in LaAlO3 [13].
Salje, European Physical Journal B Vol. 15 (2000), p. 205 [15] L.
Bhattacharya, Nature Materials Vol.3 (2004), p. 453 [38] W.T.

Key engineering materials.
Applied surface science.
Diamond and related materials.
Microelectronics journal.
Key engineering materials.

Ignoring the heat capacity of insulation layer material, equivalent thermal exchange coefficient can be calculated by Eq. 5 as follow [3]: （5） where β is thermal exchange coefficient of insulation material; λi is thermal conductive coefficient of ith insulation material hi is thickness of ith insulation layer.
（6） （7） Table 1 Thermal Parameters Materials Specific Heat (kJ/(kg·℃) Thermal Diffusivity (m2/h) Linear Expansion Coefficient 10-5/℃ （℃） B Bedrock 0.917 0.0032 0.71 SQ2-1 0.9206 0.0035 1.0 22.5 1.98 SQ-B 0.9206 0.0035 1.0 20. 1.9 Table 2 Mechanical Parameters Material Elastic Modulus(GPa) Poisson Ratio Ea a b Bedrock 16.0 0.0 0.0 0.235 SQ2-1 25.68 11.8 6.88 0.167 SQ-B 19.89 14.61 12.54 0.167 Figure 1 FEM model Figure 2 Typical Point on Middle Section Figure 3 Local Average Monthly Temperature Table 3 Calculation Conditions Setting Conditions PTI Setting Time (d) PTI Thickness （cm） case 1 case 1_1 1 days after pouring 10.0 case 1_2 1 days after pouring 15.0 case 1_3 1 days after pouring 5.0 case 2 case 2_1 15 days after pouring 10.0 case 2_2 15 days after pouring 15.0 case 2_3 15 days after pouring 5.0 case 3 case 3_1 30 days after pouring 10.0
Internal temperature and stress is not affected by the thermal insulation material, when the heat preservation material reaches a certain thickness.
Journal of Hydraulic Engineering 1995.7
The principle and application of finite element method [M]. science press, Beijing, 2009.

Materials and Methods Field Data Collection.
Choi: Journal of Korean Society of Soil Science and Fertilizer Vol. 16 (1983), p. 92 [2] S.
[3] NIAST: General Summary of Korea Soils, National Institute of Agricultural Science and Technology, Suwon, Korea (1992)
[4] NIAST: Methods of Soil and Plant Analysis, National Institute of Agricultural Science and Technology, Suwon, Korea (2000)
Witney: Journal of Terramechanics Vol. 24 (1987), p. 41