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Online since: January 2012
Authors: Bernie Hernández-Morales, Juan Ramón González-López, Gildardo Solorio-Díaz, Héctor Javier Vergara-Hernández
Welzel, in: 5th International Congress on Heat Treatment of Materials, Vol.
III, Scientifique Society of Mechanical Engineers and International Federation for the Heat Treatment of Materials (1986), pp. 1806-1813
Hernández-Morales: Experimental Thermal and Fluid Science Vol. 33 (2009), pp. 797–807
Chen: International Journal of Materials and Product Technology Vol. 24 (2005), pp. 155–169
III, Scientifique Society of Mechanical Engineers and International Federation for the Heat Treatment of Materials (1986), pp. 1806-1813
Hernández-Morales: Experimental Thermal and Fluid Science Vol. 33 (2009), pp. 797–807
Chen: International Journal of Materials and Product Technology Vol. 24 (2005), pp. 155–169
Online since: April 2008
Authors: An Ming Li, Xiang Jie Wang, Li Juan Huang
The Austenite Inverse Phase Transformation Quenching in Zero Time
Holding of 20MnV Steel
LI An-ming
1,a
, WANG Xiang-jie
1
, HUANG Li-juan
1
1
School of Materials Science & Engineering.
Experimental material and method Experimental material The chemical constitution of experimental 20MnV steel (quality percentage, %): 0.23C, 0.23Si, 1.50Mn, 0.12V, 0.020S, 0.031P.
Heat treatment process 20MnV steel is provided with hot rolled material, pre-quenching process: 880°C×20min, water cooling.
Its microstructure and property are better than that quenched with hot rolled material.
Journal of Fuxin Mining Institute, 1994, Vol. 13: 64-68
Experimental material and method Experimental material The chemical constitution of experimental 20MnV steel (quality percentage, %): 0.23C, 0.23Si, 1.50Mn, 0.12V, 0.020S, 0.031P.
Heat treatment process 20MnV steel is provided with hot rolled material, pre-quenching process: 880°C×20min, water cooling.
Its microstructure and property are better than that quenched with hot rolled material.
Journal of Fuxin Mining Institute, 1994, Vol. 13: 64-68
Online since: January 2009
Authors: Wei Zheng Yuan, Ya Fei Zhang, Hong Long Chang, Jing Hui Xu
And that the Krylov subspace method can preserve some important material
parameters as symbol.
The parameters ρ, α, β and e are the material density, Rayleigh damping coefficient and Young's modulus.
So some important parameters are preserved, like material density, Rayleigh damping coefficient, Young's modulus, etc.
AIAA Journal.
Sensors and Materials, Vol. 19 (2007), p. 49-164 [8] G.
The parameters ρ, α, β and e are the material density, Rayleigh damping coefficient and Young's modulus.
So some important parameters are preserved, like material density, Rayleigh damping coefficient, Young's modulus, etc.
AIAA Journal.
Sensors and Materials, Vol. 19 (2007), p. 49-164 [8] G.
Online since: January 2010
Authors: Eric J. Palmiere, S. Funahashia
Introduction
In the conventional production of steel and aluminium alloys, a large variety of rolling
conditions occur by which a complex forming history is imposed on the material.
The effects of multipass deformation processes on the final material properties may be manifold and furthermore, the interdependence of process parameters can significantly affect the eventual microstructure, and subsequent properties according to the type of rolling schedule and equipment.
Loveday et al.: Measurement of flow stress in hot plane strain compression tests, Materials at High Temperatures (2006), 23(2), p. 85-118 [3] P.
Munther et al.: The effect of scaling on interfacial friction in hot rolling of steels (1999), Journal of Materials Processing Technology, 88, p.105-113 [4] J.
Sellars et al.: Plane strain compression testing at elevated temperatures, Report on research work supported by Science Research Council, grant B/RG/1481, University of Sheffield, UK (1976)
The effects of multipass deformation processes on the final material properties may be manifold and furthermore, the interdependence of process parameters can significantly affect the eventual microstructure, and subsequent properties according to the type of rolling schedule and equipment.
Loveday et al.: Measurement of flow stress in hot plane strain compression tests, Materials at High Temperatures (2006), 23(2), p. 85-118 [3] P.
Munther et al.: The effect of scaling on interfacial friction in hot rolling of steels (1999), Journal of Materials Processing Technology, 88, p.105-113 [4] J.
Sellars et al.: Plane strain compression testing at elevated temperatures, Report on research work supported by Science Research Council, grant B/RG/1481, University of Sheffield, UK (1976)
Online since: April 2013
Authors: Bai Jie Niu, Wen Ming Ding, Dan Dang
However among numerous defluoridation materials, such as: alumina based materials, clays and soils, calcium based minerals, synthetic compounds and carbon based materials, granular activated alumina (GAA) seems to be better suited for defluoridation due to its specificity and affinity towards fluoride, chemical/physical properties.
[8] Ruiz T, Persin F, Hichour M, Sandeaux J, Modelisation of fluoride removal in Donnan dialysis, Journal of Membrane Science. 212 (2003) 113-121.
[8] Ruiz T, Persin F, Hichour M, Sandeaux J, Modelisation of fluoride removal in Donnan dialysis, Journal of Membrane Science. 212 (2003) 113-121.
Online since: September 2016
Authors: Viboon Saetang, Aphichad Phophoung
After demolding, the excessive material, as shown in Fig. 1, is later trimmed off by a laser beam and then ground by the abrasive tools.
This mechanism is based on the thermal shocking process which also experiences in the laser cutting of many brittle materials [1-3].
This is due to the fact that the use of longer cutting duration allows more heat energy to remove material and deepen the groove.
Molian: Journal of Engineering Materials and Technology Vol. 131 (2009), pp.0110051-01100510
Chia: IEEE Transactions on Automation Science and Engineering Vol. 9 (2009).
This mechanism is based on the thermal shocking process which also experiences in the laser cutting of many brittle materials [1-3].
This is due to the fact that the use of longer cutting duration allows more heat energy to remove material and deepen the groove.
Molian: Journal of Engineering Materials and Technology Vol. 131 (2009), pp.0110051-01100510
Chia: IEEE Transactions on Automation Science and Engineering Vol. 9 (2009).
Online since: March 2005
Authors: S.F. Medina, Alberto Quispe, Manuel Gómez, Pilar Valles
Materials and Experimental Procedure
The steel to be studied have been manufactured by Electroslag Remelting (ESR) in a laboratory unit
capable of producing 30 kg ingots and for their manufacturing consideration has been made of the
thermodynamic activities of the slag components and of the alloying elements in order to obtain the
desired composition (Table1).
Medina: Journal of Materials Science, Vol. 31, (1997), p. 1487 [7] S.F.
Gladman: The Physical Metallurgy of Microalloyed Steels (The Institute of Materials, London, 1997)
Medina: Journal of Materials Science, Vol. 31, (1997), p. 1487 [7] S.F.
Gladman: The Physical Metallurgy of Microalloyed Steels (The Institute of Materials, London, 1997)
Online since: March 2004
Authors: Jung Il Lee, Young Geun Lee, Il Ho Kim, Soon Chul Ur, Sung Lim Ryu, Tae Whan Hong
Citation &
Copyright (to be inserted by the publisher )
Syntheses and Evaluations of Microstructure Properties on Al-(50, 60,
70 mass%)Si Systems by Mechanical Alloying
Jung-Il Lee, Tae-Whan Hong, Il-Ho Kim, Soon-Chul Ur, Young-Geun Lee and
Sung-Lim Ryu
Dept. of Materials Science and Engineering/Nano Technology Lab., Chungju National University,
123 Geomdan-ri, Iryu-myeon, Chungju, Chungbuk 380-702, Korea
Keywords: High silicon Al-Si alloy systems, Mechanical alloying, XRD, Crystallite size, Misfit strain
Abstract.
Introduction Microwave and electronic packaging materials, which are necessary in an advanced technology of telecommunication, can be applied for semiconductors such as silicon or GaAs with low coefficient of thermal expansion (CTE), high thermal conductivity, high stiffness, low density, and so forth.
Recently, high silicon Al-Si alloy systems, which contain silicon more than 12.6 mass% Si, have been emerged as potential candidate packaging materials because of good thermo-physical properties with CTE (7-11×10-6/K), density (2.5-2.4 g/cm3), thermal conductivity (120-140 W/mK), machinability, and electroplating as well as cost effectiveness [1].
Journal Title and Volume Number (to be inserted by the publisher) (a) (b) (c) (d) Fig. 1 TEM images and EDS spectrums for mechanically alloyed Al-70Si alloy powders.
Introduction Microwave and electronic packaging materials, which are necessary in an advanced technology of telecommunication, can be applied for semiconductors such as silicon or GaAs with low coefficient of thermal expansion (CTE), high thermal conductivity, high stiffness, low density, and so forth.
Recently, high silicon Al-Si alloy systems, which contain silicon more than 12.6 mass% Si, have been emerged as potential candidate packaging materials because of good thermo-physical properties with CTE (7-11×10-6/K), density (2.5-2.4 g/cm3), thermal conductivity (120-140 W/mK), machinability, and electroplating as well as cost effectiveness [1].
Journal Title and Volume Number (to be inserted by the publisher) (a) (b) (c) (d) Fig. 1 TEM images and EDS spectrums for mechanically alloyed Al-70Si alloy powders.
Online since: July 2011
Authors: Xu Ling Xu, Jun Hu
Fully Coupled Dynamic Analysis of Earth and Rock-filled Dam
Jun Hu1, a, Xuling Xu1,b
1 School of resources and civil engineering,university of science and technology, Anshan Liaoning,114051,China
a hujun99@sohu.com, b xuling6396@126.com
Keywords: Fully coupled,Dynamic,Flac3d
Abstract.
(3) Where is the permeability,is the Biot modulus,is the Biot coefficient, =,is the drained bulk modulus, and is the shear modulus of the porous material.
If the material is in compressible and the biot modulusis equal to /, where is fluid bulk modulus and is porosity[4].
Physical and mechanical parameters of the rock and soil Material name porosity permeability coehesion I 0.3 1e-8 1e3 II 0.4 1e-5 2e4 Material name Friction angle /() Yong’s modulus density I 35 3.5e7 2200 II 45 2e8 2500 Remark: I is core material, II is shell material.
Journal of Geotechnical and Geo- -environment Engineering, ASCE, 2001, 127: 688~698.
(3) Where is the permeability,is the Biot modulus,is the Biot coefficient, =,is the drained bulk modulus, and is the shear modulus of the porous material.
If the material is in compressible and the biot modulusis equal to /, where is fluid bulk modulus and is porosity[4].
Physical and mechanical parameters of the rock and soil Material name porosity permeability coehesion I 0.3 1e-8 1e3 II 0.4 1e-5 2e4 Material name Friction angle /() Yong’s modulus density I 35 3.5e7 2200 II 45 2e8 2500 Remark: I is core material, II is shell material.
Journal of Geotechnical and Geo- -environment Engineering, ASCE, 2001, 127: 688~698.