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Effects of Powdery Mill Tailings from Magnetite on Workability and Strength of Concretes CAI Ji-wei1a, WU Ji-xu1,b, LÜ Zheng-hang1,c, GAO Guang-liang1,d 1Hebei Province Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and Engineering, Hebei Polytechnic University, Tangshan 063009, China amail: caijw1-11@yahoo.com Keywords: powdery mill tailings from magnetite, manufactured fine aggregate, concrete, workability, strength Abstract.
The available utilization ways of mill tailings applied in mining and agriculture industries and production of wall building materials and decorating materials bring some economic benefit and social benefit, but the utilization percentage is still very low and the problems such as land waste, environmental pollution and ecological damage are not overcome yet.
Experimental Materials. 1) Ordinary Portland Cement (grade 42.5 MPa) from Jidong Cement Plant with specific surface area 402 m2/kg, Grade II Fly Ash (FA) from Tangshan with water demand ratio 105%, S95 ground granulated blast furnace slag (GBFS) from Xinquan with specific surface area 450 m2/kg, and coarse (C), moderate (M) and fine (F) powdery mill tailings with specific surface area 360 m2/kg, 480 m2/kg and 770 m2/kg prepared with mill tailings from magnetite ground for 40 min, 60 min and 90 min.
Journal of Wuhan University of Technology,2009,31(7):104-107 (in Chinese)
Journal of Wuhan University of Technology,2009,31(7):88-91 (in Chinese).

TC16 (Ti-2.5Al-5Mo-5V) titanium alloy is alpha + beta two-phase titanium alloys, which have good plasticity and good comprehensive mechanical properties and is often used as a fastener materials.
Numerical Simulation of Temperature Field and Thermal Stress Field in Quenching Process of TC21 Titanium Alloy Forging[J].Rare Metal Materials And Engineering, 2011,40(10):1721-1726
Materials Science and Engineering A , 419 (2006) 214–217
Materials Engineering, 2009(1):19-22
The Chinese Journal of Nonferrous Metals, 2010,20(S1)：s107-s112.

Material and experimental techniques 2.1 Materials In this study, the high-level B4C (average particle size 5 ~ 10μm, purity 95%) is used as well as the addition of graphite in the matrix alloy to prepare the in-situ TiB and TiC.
Materials for advanced studies and devices [J].
Matericals Science and Technology, (2002), 10(2): 189-191
Acta Material Composites Sinica, (2001),18(3): 60-66
Journal of Alloys and Compounds, 327 (2001) 248-252

Table 1 Basic parameters of the simulating material Materials Density[g/cm3] Diameter[mm] Thickness[mm] Circular silicon pieces 1.25 19, 8.6 1, 0.44 When preparing the small circular silicon pieces, we should get 2 to 5 pieces together side by side (Fig. 1).
[2] Yin Z H, Di B R, Li X Y, et al, Progress in P-wave anisotropy technology for fracture detection, Science & Technology Review. 29 (2011) 73-79
[5] Bi G Q, Li N, Li G Y, Experimental study on characteristics of wave propagation in media containing intermittent cracks, Chinese Journal of Rock Mechanics and Engineering. 28 (2009) 3117-3123
[10] Chen Q, Liu X J, Liang L X, et al, Numerical simulation of the fractured model acoustic attenuation coefficient, Chinese Journal of Geophysics. 55 (2012) 2044-2052
[11] Wang Z Z, Wang R H, Bu Y H, et al, A new method of preparing artificial cores with certain cracks for experiment study of elastic wave propagation, Advanced Materials Research, 356 (2012) 2954-2957

Experimental procedure Experiment materials.
PCS Material preparation.
Acta Material Composite Sinica vol. 23(2006), p. 35-36, in Chinese
Journal of Materials Science & Engineering vol. 22(2004), p. 657-659, in Chinese
Journal of European Ceramics Society vol. 29(2009), p. 3091-3093.

At the same time, some questions exist in the bonding of the automobiles and airplanes, such as dissimilar materials bonding, difference thickness materials bonding.
The bonding of dissimilar materials or difference thickness materials is an importance research project.
Cold pressure welding, not only difference thickness materials and dissimilar materials are thought, but also work environment is thought, can realize weight loss and energy conservation.
Figure 1 shows the initial position of two sheet materials.
Journal of Impact Engineering 31 (2005) 267–288

Experimental Procedures In this study, aluminium granules (99.9% purity, 2-10mm granules) were used as the matrix material.
Discussion Synthesis of Al-Mg/Al2O3 materials was successfully accomplished using the method of DMD followed by hot extrusion.
Walker, JOM-Journal of the Minerals Metals & Materials Society, vol. 43, no. 8, pp. 8-15, 1991
Satyanarayana, Journal of Materials Science, vol. 30, pp. 1903-1911, 1995
G. and Drevet, B., Pergamon Materials Series, vol. 3, pp. 1- 53, pp. 175-197, 1999

An inherent property of the magnetostrictive materials, however, is the presence of complex nonlinearities and hysteresis, which cause the undesirable inaccuracy or oscillations and even instability of system.
Acknowledgement This work was supported by the National Science Foundation of China (60534020), National Key Project Research of China (2002cb312205-02) and Key Project Foundation of Beijing (XK100060526).
Bertotti: General properties of power losses in soft ferromagnetic materials, IEEE TRANSACTIONS ON MAGNETICS, VOL. 24, NO.
Jiles: Frequency dependence of hysteresis curves in conducting magnetic materials, J.
Atherton "Theory of ferromagnetic hysteresis" Journal of Magnetism and Magnetic Materials, vol. 61, p. 48-60, 1986

Material and Methods Material The research material is mendong fibers.
Panigrahi: Journal of Polymers and the Environment, vol. 15, no. 1 (2007), pp. 25–33 [2] Q.
Soenoko: Submit to Journal of Natural Fiber (2013) [7] I.
Foreman: Composites Part A: Applied Science and Manufacturing, vol. 41, no. 5 (2010), pp. 596–603 [9] V.
Narayanasamy: Materials and Design, vol. 32, no. 1 (2011), pp. 453–461

Impact-Sliding Wear Behaviour of Nitrided H13 Steel Tool Steels Ezgi Akyıldız1,a, Mert Altay1,b, Faiz Muhaffel1,c, Seçkin Özkurt2,d, Erdem Atar3,e, Hüseyin Çimenoğlu1, f * 1Department of Metallurgy and Materials Engineering, Istanbul Technical University, Istanbul, TURKEY 2Supsan Motor Supapları San. ve Tic.
A.Ş., Istanbul, TURKEY 3Department of Materials Science and Engineering, Gebze Technical University, Kocaeli, TURKEY aezakyildiz@gmail.com, bmert.altay2@gmail.com, cmuhaffel@itu.edu.tr, dsozkurt@supsan.com, eatar@gtu.edu.tr, fcimenogluh@itu.edu.tr Keywords: Tool steel, impact-sliding test, gas nitriding, wear mechanisms, high temperature wear.
Shivpuri, Computer Modeling of Wear in Extrusion and Forging of Automotive Exhaust Valves, Journal of Materials Engineering and Performance, 4 (1995) 162-165
Hashmi, Comprehensive Materials Finishing, first ed.
Sheikh, Influence of Surface Preparation on the Kinetics of Controlled Gas-Nitrided AISI H13 Steels Used in Extrusion Dies, Journal of Materials Engineering and Performance 19 (2010) 347-355