Search results

Wang Department of Materials Science, Harbin Institute of Technology Harbin 150001, P.R.
Introduction Nanomaterials represent a new generation of advanced materials with improved physical, chemical and mechanical properties.
[3] T.Bell, Z.Liu, M.Yan and Y.Sun: Materials Protection, Vol. 32(10-B) (1999), p. 1-12 [4] Y.Wang ,Z.H.Yu, J.J.Liu, C.S.Wang and Q.A.Li: Journal of Rare Earths, Vol. 10 (1992), p. 212- 216
Strutt: Materials Science and Engineering A, Vol.
Liu: Material Science and Technology, (to be published)

On the basis of atomistic interaction model, the dynamics of the local material deformed process and its interactions on the material structure as well as phase transformation can be studied.
However, most of the ideal nanoindentation simulations are focusing on the material deformation mechanisms, phase transformation and surface contact mechanism.
Acknowledgement This research is funded by the National Natural Science Foundation of China (Grant No. 50905073, 51105163, 51275198), National Hi-tech Research and Development Program of China (863 Program) (Grant No. 2012AA041206), Key Projects of Science and Technology Development Plan of Jilin Province (Grant No. 20110307), International Science and Technology Cooperation Program of China (Grant No. 2010DFA72000) and Graduate Innovation Fund of Jilin University (Grant No.20121084).
Chang, Molecular dynamics analysis of temperature effects on nanoindentation measurement, Materials Science and Engineering A. 357 (2003) 7-12
Pharr, An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments, Journal of Materials Research. 7 (1992) 1564-1583

Two phase simulations Two-phase simulations provide a simple approach to study the process released with gas and raw materials flow.
Fig. 6 presents the charged surface, velocities of raw materials and gas process.
Figs. 6 (a) and (b) show the dynamic process of volume fraction for solid materials.
An Eulerian description of the bubble phase is utilized to predict the effect of gas entrainment on the dissolution rate of alloy materials [12], where the bubble size is calculated from a transport model [13].
Klevan, Scandinavian Journal of Metallurgy, 29 (2000) 71-80 [5] H.

Mészáros Department of Materials Science and Engineering, Budapest University of Technology and Economics, H-1111 Bertalan L. u. 7., (MT/109), Budapest, Hungary meszaros@eik.bme.hu Keywords: duplex stainless steel, heat treatment, phase transformation, nondestructive testing, magnetic test Abstract.
The microstructure of the base material can be seen in figure 1.
Base material, 100x of magnification.
Mészáros, Testing of Stainless Steel BY double yoke DC magnetometer, Journal of Electrical Engineering, Vol 61.
Fiorillo: Measurements and Characterization of Magnetic Materials, (Elsevier Pub.Co.) 2004.

(2) k is average heat conductivity of P-N knot material; A is total area of thermoelectric material; T(x,t) is heat distribution of thermoelectric module.
(3) is Thomson coefficient. is resistance ratio of thermoelectric material.
C is Average specific heat of thermoelectric material. is Average consistency of thermoelectric material.
Acknowledgment This work was supported by key disciplines of Shanghai Municipal Education Commission (J51801), and Science and Technology Project of Shanghai Municipal Education Commission (07ZZ179).
Duang, “System dynamic model and temperature control of a thermoelectric cooler,” [J].International Journal of Refrigeration, vol. 23, pp. 197-207, 2000

Introduction Heat-resistant martensitic steels with 9% Cr are widely used as a structural material for the boiler and turbine components of ultra supercritical fossil power plants due to its excellent creep resistance [1,2].
It was recently demonstrated, that the creep resistance of these materials can be significantly improved by boron additives [3,4].
Acknowledgements The study was supported by Federal Agency for Science and Innovations, grant No.
Sokolov: Journal of Nuclear Materials.
[8] Standard Test Methods for Notched Bar Impact Testing of Metallic Materials, ASTM E23-07a, an American National Standard.

The micro device property was affected by the material, structures and electromagnetic parameters.
Ni-Fe plating has a compact structure, bright and smooth surface and was widely used in the production of new materials that require specific mechanical, chemical and/or physical properties[8].
Journal of Materials Science: Materials in Electronics, 11, p.243-251, (2000)

Expermental study on the mixture ratio and the compressive strength of concrete with Recycle crushed brick coarse Aggregate QinLiua and Xiaona Zhangb Huanghe Science&Technology College, HeNan, ZhengZhou450063, China a32090881@qq.com b45165920@qq.com Keywords: recycled coarse aggregates; concrete; mixture ratio; compressive strength Abstract: Considering the high absorption of water is a distinctive feature of recycled crushed bricks coarse aggregate, the mixture ratio text of recycled concrete using crushed bricks as coarse aggregate is carried out, and the compressive performance is studied.The resert indicate , the strength grade of recycled concrete which using bricks as coarse aggregate can reach C20 and C25, characterisitic value of cubic concrete compressive strength at the age of 28 days are 21.2MPa and 27.55MPa;Based on regression analysis of test data , the formulas which estimated the strength of recycled coarse aggregates concrete are given out.
Analysis of the reasons for the first brick, waste recycled coarse aggregate material strength is low, and the inevitable waste brick regeneration coarse aggregate in containing fine mortar, waste broken will make some recycled coarse aggregate with fine cracks, resulting in a strong degree of aggregate is low; moreover, the test of concrete test block are standard maintenance, maintenance humidity is higher than 90%, block the water loss is small, recycled aggregate "curing" performance failed to manifest.
The calculating formula of the strength of recycled aggregate concrete China's current 《mix proportion design of ordinary concrete rules》 (JGJ55-2011) provides that: value calculated by the following formula of compressive strength of concrete: （1） （2） —Test cube compressive strength of concrete of 28d age values (MPa)，—Cementitious material 28d mortar strength , —the influence coefficients of fly ash and slag powder,，（In this experiment without fly ash and slag powder,so=1.0, =1.0）—Test cube compressive strength of concrete of 28d age values (MPa)；—The amount of cementing material and water ratio；, The regression coefficient associated with the coarse aggregate，for the gravel ，[6]。
The new building materials，2006（6），30-33 [2] H.Zhang， X.Z.Xiong．Study on the characteristics of waste recycled aggregate concrete [J].
Journal of Wuhan University of Technology，2006（3）: 64-66

Experimental Study on the Flexural Impact Properties of Fiber Reinforced Lightweight Aggregate Concrete Jiangang Niu1, a, Bin Wu1, b and Jian Bao 1, c 1 School of architecture and civil engineering, Inner Mongolia University of Science & Technology, Baotou 014010, P.R.
Fig. 1 The test of flexural impact property of lightweight aggregate concrete [Units: mm] Test material.
All materials are shown blow in detail.
In order to avoid the interference in the mechanical properties by admixture and mineral powder, all specimens are without admixture and mineral powder materials.
Journal of structures, 2003, 10, 24 (5): 78-81

Chen Xiaodong et al.(2003) have built MDB model, of which the impactor was modeling with solid elements and consisted of two parts: plastic materials and aluminum honeycomb materials .[3] M.Asadi et al. (2007)have built the overall MDB model using a multi-layer structure [4].
Moreover, 24 # material was used in the model.
The adjustable parameters and structural properties of this material are shown in Table 1 below.
Fig.1 Size of the impactor (front) Fig.2 Trolley finite element model Fig.3 Impactor finite element model Table1 Simulation parameters of impactor variable Material parameters Rho E Nu SIGY LCSS Parameter type F F F F F variable Structural properties TS1 TS2 TT1 TT2 Parameter type F F F F F means float type,I means Integer type Validation of the BEM-MDB According to the side impact regulation GB 20071-2006, the force-deflection curves were measured in the simulation test which the barrier impacted against the dynamometric wall at the speed of 35 km/h.
Journal of Hunan University (Natural Sciences) ,2010, 37(12)：130~136.