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Online since: March 2014
Authors: Kristjan Juhani, Jüri Pirso, Marek Tarraste, Mart Viljus
Hardness of prepared materials.
Erosion rate of prepared materials.
Journal of Refractory Metals and Hard Materials 35 (2012) 262-269
Norgren, A comparison of the microstructures of WC–VC–TiC–Co and WC–VC–Co cemented carbides, International Journal of Refractory Metals & Hard Materials 25 (2007) 207–213
Tarraste, The influence of Cr3C2 and VC as alloying additives on the microstructure and properties of reactive sintered WC-Co cermets, Materials Science (Medžiagotyra) 18 [1] (2012) 79-83
Online since: August 2012
Authors: Marcos Flavio de Campos, Daniel Rodrigues, Nelson Karsokas Filho, José Adilson de Castro
Alternatively, in order to guarantee a suitable sintering treatment, the main industrial parameter to be controlled is the kinetics of the densification and shrinkage, which defines the average bulk sintered properties of the materials [1-5].
The model was implemented in an open source code environmentally friend and allows the user to insert the desired treatment conditions materials properties and measured parameters of the green compacts powders.
Coble: Journal of the American Ceramic Society Vol. 41(2) (1958), p. 55
Berg, Journal of Applied Physics, Vol. 26 (1955), p. 1205-1212
German: Powder Metallurgy Science.
Online since: December 2012
Authors: Gang Meng, Jin Qing Jia, Li Hua Zhang
The material mechanical properties of steel are shown in Table 2.
Material mechanical properties of steel Models Mondulus of elasticity Ey [GPa] Yield strength fy [MPa] Ultimate Strength fu[MPa] As15.2 196.4 1845 1942 As12.7 195.6 1839 1936 B14 201.5 408 572 B18 204.5 411 587 I14 206.1 245 406 Finite Element Analysis Model of ANSYS Finite element analysis of steel reinforced concrete structure and the other solid materials are same in the principles and methods.
Because of steel reinforced concrete structure is composed of three different materials of steel reinforced, rebar and concrete, and the material constitutive relation is very particularity and complexity, the separate model was adopted in this text.
Fig.3 Cross-sectional unit Fig.4 Constraint handling Fig.5 Reinforced unit Compared to ordinary concrete materials, mechanical properties of the ultra-high strength concrete is very special, and brittle failure is extremely obvious.
Acknowledgements The authors would like to acknowledge the financially supported from project of National Natural Science Foundation of China "Research on Seismic Performance and Ductility-based Seismic Design of Steel Reinforced Ultra-high Strength Concrete Frames" (Grant No. 51078059).
Online since: January 2013
Authors: Zhi Ming Sun, Shui Lin Zheng, Yang Yang Huai, Zhong Lei Dou
Introduction Geosynthetic clay liners (GCLs) are a new generation of waterproof building materials, which are manufactured clay liners that consist of a thin layer of bentonite glued to a geomembrane or are encased by geotextiles [1,2].
However, how to improve the salt resistance capacity of GCLs in saline water using China bentonites as the raw materials has rarely been reported.
Materials and methods Materials used.
Because diatomite, opals, sepiolite, attapulgite are all porous materials, the specific area of which are large.
Quirk, Changes in basal spacing of montmorillonite in electrolyte solutions, Journal of Colloid and Interface Science. 19 (1964) 798-812
Online since: October 2010
Authors: Qing Zhang, Xiao Tian Jing, Quan An Li, Xing Yuan Zhang
Microstructure and Mechanical Properties of Magnesium Alloy AZ81 with Yttrium Qing Zhang1,2,a, Quan-an Li1,2, Xiaotian Jing1, Xing-yuan Zhang2 1School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China 2School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China afoxzq@126.com Keywords: Yttrium, Magnesium Alloy AZ81, Microstructure, Mechanical Properties Abstract: The effects of yttrium on the microstructure and mechanical properties of magnesium alloy AZ81 have been investigated by alloy preparation, microstructure analysis and tensile tests.
All the raw materials should be baked at 200℃ before the melting started.
Materials Science and Engineering A, Vol. 302 (2001) , p. 37 [2] A.A.Luo.
Materials Science Forum, Vol. 419-422 (2003), p. 57 [3] X.T.
Materials for Mechanical Engineering, Vol. 28(2004), p. 29 (in Chinese) [11] S.C.
Online since: March 2013
Authors: Wei Shui Fei, Dong Ya Wang
Caulking material performance aspects, in view of caulking material durability properties have been studied, and developed better durability, excellent performance of caulking materials, put forward under heavy traffic contraction joints shall be set dowel bar and other important suggested measures.
Slot upper tamping joint sealing materials, lower set back liner strip.
Joint Structure Diagram The back pad, also known as caulking materials, placed before the sealing materials in cement concrete pavement joints, mainly used to prevent joint sealant drowned in seam bottom, at the same time, using it can save material, but also can avoid joint sealant optional flow, so that it can better bonding with the concrete slab.
Hefei: AnHui science and technology press, 1997.
In Chinese [5] Zha Xudong: Journal of Foreign Highway , 2002, (4).
Online since: February 2011
Authors: Yoko Yamabe-Mitarai, Hilda Kundai Chikwanda, Silethelwe Chikosha
Phase Analyses of a TtPt Alloy Synthesized by Spark Plasma Sintering Hilda Kundai Chikwanda1, a, Yoko Yamabe-Mitarai2,b and Silethelwe Nxumalo3,c 1 and 3Council for Scientific and Industrial Research, Materials Science & Manufacturing, Pretoria, South Africa 2National Institute for Materials Science, Tsukuba, 305-0047, Japan ahchikwanda@csir.co.za, bmitarai.yoko@nims.go.jp, cschikosha@csir.co.za Keywords: Spark plasma sintering, high temperature shape memory alloys, powder metallurgy, phases, TiPt, SEM, XRD, B2, B19, Abstract: A Ti-50at%Pt alloy synthesized using the spark plasma sintering (SPS) technique has been characterized for phases’ identification.
The electron microscope used was equipped with an EDS detector, that, together with the XRD, were used for both the identification and analyses of the phases in the starting materials and the sintered alloys.
Smart Structures and materials (2005) (behaviour and mechanics) san diego CA, 1-12
[3] T Biggs et al, Platinum Metals review (2003), 47, (4) 142-156 [4] Yoko Yamabe-Mitarai, (2006) Materials Transactions, 47, 3, 650-657 [5] M Nishida et al. material Science and Technology, 24 (2008) 8, 884-889 [6] Guillermo Bozzolo et al. (2007) Phase structure and site preference behavior of ternary alloying additions to PdTi and PtTi shape-memory alloys, Intermetallics; 15901-911 [7] H C Donkersloot and J H N van Vutch, J-less common metals 20 (1970), 83-91 [8] D S Grummon, “Smart Structural Materials”, JOM, December, (2003) 24-32 [9] T Biggs et al, Journal of alloys and compounds 375, (2004) 120-127
Online since: August 2013
Authors: Chao Fu Li, Hong Fa Xu, Chen Wang, Miao Jiang, Han Sheng Geng, Feng Chen
Four empirical formulas of grouting diffusion radius in porous medium materials are chosen to compare.
Wang, et al: Geotechnical grouting theory and engineering practice (Science Press, Beijing, Chinese 2001)
Journal of Hydraulic Engineering, Vol. 36, No.6 (2004), p75-79.
International Journal of Rock Mechanics & Mining Sciences, Vol. 37 (2000), p1027-1037 [9] P.
Geological Science and Technology Information, Vol.7, No.2 (1988), p61-67 (in Chinese) [11]Gustafson G, Stille H.
Online since: October 2010
Authors: Emad A. Badawi, M.A. Abdel-Rahman, M. Abdel-Rahman, Alaa El-Deen A. El-Nahhas
It must be noted that the age-hardening process can be applied only to materials which exhibit a decreasing solubility with decreasing temperature. 1.2 Al 6xxx Alloys precipitation Aluminum alloys have been the material of choice for aircraft construction since the 1930s.
Troeger, L.P. and Starke, E.A., “Microstructural and Mechanical Characterization of a Superplastic 6xxx Aluminum Alloy”, Materials Science and Engineering, A277, 102-113, 2000 2.
Hirth, S.M., Marshall, G.J., Court, S.A. and Lloyd, D.J., “Effects of Si on the Aging Behaviour and Formability of Aluminum Alloys Based on AA6016”, Materials Science and Engineering, A319- 321, 452-456, 2001 3.
Zehn, L., Kang, S.B. and Kim, H.W., “Effect of Natural Aging and Preaging on Subsequent Precipitation Process of an Al-Mg-Si Alloy with High Excess Silicon”, Materials Science and Technology, 13, 905, 1997 5.
Journal of materials processing technology 135 (2003) 83-90 18.
Online since: February 2015
Authors: E. Barreira, V.P. de Freitas, João M.P.Q. Delgado
Diffusion is a characteristic behaviour of slow dry materials where drying of water vapour transfer rates inside the materials are controlled by diffusion towards the outer surface.
Delgado and V.P. de Freitas: Wetting and Drying of Building Materials, Drying and Wetting of Building Materials and Components, Chap. 3, 51–69, edited by J.M.P.Q.
Crank: The mathematics of diffusion (Oxford Science.
Krokida: Drying Kinetics of Some Building Materials.
Journal of Food Science, Vol. 53: 1216–1219 (1988)