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Online since: October 2014
Authors: M. Ortiz, M.P. Ariza, K.G. Wang
In this work, we present a novel deformation-diffusion coupled computational
framework, which allows the long-term simulation of such slow processes and at the same
time maintains a strictly atomistic description of the material.
One example is hydrogen embrittlement, that is, the material becomes brittle and fracture following cyclic absorption and desorption of hydrogen.
This computational framework is an extension of HotQC, a maximum entropy scheme for finite temperature solids [2, 3], to multi-species materials with diffusion of mass.
More specifically, we consider a system consisting of N atoms, each of which can be of one of M species including, in this context, hydrogen and the species of the hydrogen-storage material.
Ortiz: International Journal of Fracture Vol. 174 (2012), p. 75-85[4] J.M.
One example is hydrogen embrittlement, that is, the material becomes brittle and fracture following cyclic absorption and desorption of hydrogen.
This computational framework is an extension of HotQC, a maximum entropy scheme for finite temperature solids [2, 3], to multi-species materials with diffusion of mass.
More specifically, we consider a system consisting of N atoms, each of which can be of one of M species including, in this context, hydrogen and the species of the hydrogen-storage material.
Ortiz: International Journal of Fracture Vol. 174 (2012), p. 75-85[4] J.M.
Online since: September 2004
Authors: Philip J. Withers, P. Ryan, Joao Quinta da Fonseca, Michael Preuss
Withers1,d
1
Manchester Materials Science Centre, Grosvenor Street, M1 7HS Manchester, UK
joao.fonseca@umist.ac.uka , michael.preuss@umist.ac.ukb , paul.ryan@postgrad.umist.ac.ukc,
phil.withers@man.ac.ukd
Keywords: image correlation, electronic speckle interferometry, mechanical testing, inertia friction
welds
Abstract.
Introduction Many important engineering components show heterogeneous deformation due to microstructural variations in the material.
The tensile test has been the test of choice for the determination of mechanical properties of materials.
However, this only provides an approximate inference of the yield strength of the material, and no detailed information on further properties of the stress-strain behaviour such as work hardening.
Withers, Full field strain mapping of micrographs acquired during deformation, submitted to Journal of Microscopy, 2004 [3] J.N.
Introduction Many important engineering components show heterogeneous deformation due to microstructural variations in the material.
The tensile test has been the test of choice for the determination of mechanical properties of materials.
However, this only provides an approximate inference of the yield strength of the material, and no detailed information on further properties of the stress-strain behaviour such as work hardening.
Withers, Full field strain mapping of micrographs acquired during deformation, submitted to Journal of Microscopy, 2004 [3] J.N.
Online since: March 2008
Authors: Jung Il Song, Yi Qi Wang, Chae Sil Kim, W.K. Joo
Introduction
In the past a few decades, the technique of HIPIB has been investigated extensively as a new approach for
surface modification and coating deposition of materials.
The scientists of the United States, Russia and Japan etc. countries extremely make progress in the field of material surface modification of the HIPIB, have already gradually enlarged the research field from annealing the semiconductor to metals/nonmetal material surface irradiated, the ion beams of mixing, thin film deposition and synthesis of nano-phase powders etc. [1, 2].
Fig. 1 A whole structural schematic drawing of the TEMP-6 type apparatus EB-PVD TBCs Preparation Electronic Beam-Physical Vapor Deposition(EB-PVD) is a sort of steaming plating method as heat source by electron beam, the obvious high evaporation rate, almost can ablate all materials, the binding capacity of coating and matrix is as good as wheat, be able to control the deep and uniformity of the film.
Olson et al.: Journal of Vacuum Sci. and Tech.
Newaz: Journal of Materials Science Letters Vol. 20 (2001), p. 93-95
The scientists of the United States, Russia and Japan etc. countries extremely make progress in the field of material surface modification of the HIPIB, have already gradually enlarged the research field from annealing the semiconductor to metals/nonmetal material surface irradiated, the ion beams of mixing, thin film deposition and synthesis of nano-phase powders etc. [1, 2].
Fig. 1 A whole structural schematic drawing of the TEMP-6 type apparatus EB-PVD TBCs Preparation Electronic Beam-Physical Vapor Deposition(EB-PVD) is a sort of steaming plating method as heat source by electron beam, the obvious high evaporation rate, almost can ablate all materials, the binding capacity of coating and matrix is as good as wheat, be able to control the deep and uniformity of the film.
Olson et al.: Journal of Vacuum Sci. and Tech.
Newaz: Journal of Materials Science Letters Vol. 20 (2001), p. 93-95
Online since: July 2013
Authors: Xiao Bo Li, Ge Yu Liang, Li Hong Yin, Hao Zheng, Ran Liu
Materials and methods
Materials and reagents.
The regions affected by nanoparticles differed also depending on different nano-materials.
Combining with the ED1 immunostaining results, the nano Al2O3 induced less microglia activation in olfactory bulbs and cortex of rats than AlCl3, and no alteration of spacial learning behaviours and Aβ expression, showed fewer stimuli to CNS than soluble Al materials.
Journal of Radioanalytical and Nuclear Chemistry Vol.272. (2007), p. 527
British Journal of Pharmacology and Toxicology Vol.2. (2011), p. 273
The regions affected by nanoparticles differed also depending on different nano-materials.
Combining with the ED1 immunostaining results, the nano Al2O3 induced less microglia activation in olfactory bulbs and cortex of rats than AlCl3, and no alteration of spacial learning behaviours and Aβ expression, showed fewer stimuli to CNS than soluble Al materials.
Journal of Radioanalytical and Nuclear Chemistry Vol.272. (2007), p. 527
British Journal of Pharmacology and Toxicology Vol.2. (2011), p. 273
Online since: June 2017
Authors: M. Ramadan, Khalid M. Hafez, N. Fathy, Mona Ismail
Box 87 Helwan, Egypt
3Physics Department, College of Science, Hail University, P.
Nonetheless, the strength of a welded joint is largely dependent on the shape and dimensions of its weld-bead, the type of filler materials and welding conditions.
Experiment and Methodology Materials and Method.
These materials are considered the most common steel types used in tailored blanks for the automotive applications.
Albright. , Effect of GMAW process and material conditions on DP 780 and TRIP 780 welds, WELDING JOURNAL-NEW YORK-, 87(6) (2008) 135
Nonetheless, the strength of a welded joint is largely dependent on the shape and dimensions of its weld-bead, the type of filler materials and welding conditions.
Experiment and Methodology Materials and Method.
These materials are considered the most common steel types used in tailored blanks for the automotive applications.
Albright. , Effect of GMAW process and material conditions on DP 780 and TRIP 780 welds, WELDING JOURNAL-NEW YORK-, 87(6) (2008) 135
Online since: November 2014
Authors: Norzita Ngadi, Ali Asmadi, Haslenda Hashim, Ramli Mat, Jeng Shiun Lim, Hajar Alias, Anwar Johari, Saeed Isa Ahmed
Materials in and out of the technologies are governed by Eqs. 4 and 5.
The mass balance for material into technology T is expressed by Eq. 4 while material generated is defined by Eq. 5.
The product per ton input material and emission reduction potentials for various technologies are shown in Table 1.
Climate Change, The Physical Science Basis.
Alkali, Landfill gas and its renewable energy potentials in Johor, Malaysia, International Journal of Emerging Trends in Engineering and Development, 1, (2013) 506-520
The mass balance for material into technology T is expressed by Eq. 4 while material generated is defined by Eq. 5.
The product per ton input material and emission reduction potentials for various technologies are shown in Table 1.
Climate Change, The Physical Science Basis.
Alkali, Landfill gas and its renewable energy potentials in Johor, Malaysia, International Journal of Emerging Trends in Engineering and Development, 1, (2013) 506-520
Online since: November 2012
Authors: Mart Viljus, Priit Kulu, Fjodor Sergejev, Maksim Antonov, Andrei Surzhenkov, Priit Põdra, Eron Adoberg, Arvo Mere, Valdek Mikli
Impact and Sliding Wear Properties of Single Layer, Multilayer and Nanocomposite Physical Vapour Deposited (PVD) Coatings on the Plasma Nitrided Low-Alloy 42CrMo4 Steel
Andrei Surzhenkov1,a, Eron Adoberg1,b, Priit Põdra2,c, Fjodor Sergejev1,d,
Arvo Mere3,e, Mart Viljus4,f, Valdek Mikli4,g, Maksim Antonov1,i, Priit Kulu1,j
1 Department of Materials Engineering, Tallinn University of Technology, Ehitajate tee 5,
19086 Tallinn, Estonia
2 Department of Mechatronics, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
3 Department of Materials Science, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
4 Centre for Materials Science, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
aandrei.surzenkov@ttu.ee (corresponding author), beron.adoberg@ttu.ee, cpriit.podra@ttu.ee, dfjodor.sergejev@ttu.ee, earvo.mere@ttu.ee, fmart.viljus@ttu.ee, gvaldek.mikli@ttu.ee, imaksim.antonov@ttu.ee, jpriit.kulu@ttu.ee
Keywords:
In addition, the wear scars at the plates and at the balls were investigated by SEM, and energy dispersive spectroscopy (EDS) was carried out to estimate the material transfer between the plate and the ball.
indicating material transfer from the ball to the coating; in contrast, no material transfer from the coatings to the ball was observed.
Morstein, TripleCoatings3® - New Generation of PVD-Coatings for Cutting Tools, Journal of Machine Manufacturing XLIX (2009) 19-25
Kulu, Comparative study of the PVD coatings on the plasma nitrided steel, Materials Science (Medžiagotyra) 18 (2012) 40-44
In addition, the wear scars at the plates and at the balls were investigated by SEM, and energy dispersive spectroscopy (EDS) was carried out to estimate the material transfer between the plate and the ball.
indicating material transfer from the ball to the coating; in contrast, no material transfer from the coatings to the ball was observed.
Morstein, TripleCoatings3® - New Generation of PVD-Coatings for Cutting Tools, Journal of Machine Manufacturing XLIX (2009) 19-25
Kulu, Comparative study of the PVD coatings on the plasma nitrided steel, Materials Science (Medžiagotyra) 18 (2012) 40-44
Online since: September 2017
Authors: Rafał Leszek Abdank-Kozubski, Gilles Demange, H. Zapolsky
Computational modelling techniques are now widely employed in material science to
study a microstructural evolution in different types of materials.
Annual review of materials research, 32(1) :113140, 2002
Materials Science and Engineering, 60(3) :189194, 1983
Journal of Magnetism and Magnetic Materials, 351 :52 59, 2014
Materials under irradiation
Annual review of materials research, 32(1) :113140, 2002
Materials Science and Engineering, 60(3) :189194, 1983
Journal of Magnetism and Magnetic Materials, 351 :52 59, 2014
Materials under irradiation
Online since: September 2011
Authors: Sha Sha Dou
Based on the FLOW3D of Flow Science Company, simulated the die casting process, investigated the relationship between the parameters of die casting machine and air entrainment , found the best parameters.
Fig.2 The Schematic diagram of shot sleeve The material of casting is aluminum A380 alloy, the main components shown in Table 1, its physical properties shown in Table 2, the mold material is SDK61, its physical properties shown in Table 3[4].
References [1] Syrcos G.P, Die Casting Process Optimization Using Taguchi Methods, Journal of Materials Processing Technology, 2002,Vol.29, 68-75
August ( 1998) [5] FLOW-3D Training Guide& User Guide, Flow-3D Science Co. , (2004), V8.25 [6] Wang L.
Fig.2 The Schematic diagram of shot sleeve The material of casting is aluminum A380 alloy, the main components shown in Table 1, its physical properties shown in Table 2, the mold material is SDK61, its physical properties shown in Table 3[4].
References [1] Syrcos G.P, Die Casting Process Optimization Using Taguchi Methods, Journal of Materials Processing Technology, 2002,Vol.29, 68-75
August ( 1998) [5] FLOW-3D Training Guide& User Guide, Flow-3D Science Co. , (2004), V8.25 [6] Wang L.
Online since: September 2012
Authors: Bin He, Jin Tao Cao, Xiao Lin He, Zhi Xiang Jin, Ming Lun Fang
Suffered strain and deformation of a relatively large component model of the flexible body suffered in the various conditions of stress and strain-bit analysis to identify the largest position of the stress by the stress value and materials the yield strength of line compared to see if meet the requirements, as shown in Figure1 and 2.
Acknowledgments The authors are grateful to Shanghai Science and Technology Commission Project (No. 11dz1120302), Innovation Program of Shanghai Municipal Education Commission, Innovative Foundation of Shanghai University.
Dynamic analysis method of offshore jack-up platforms in regular and random waves.Journal of Marine Science And Application, vol1(1), 111-118 .(2012) [3] M.
Applied Mechanics and Materials, vol.34-35: 1104-1108.(2010) [6] Spidsoe N, Karunakaran D.
Acknowledgments The authors are grateful to Shanghai Science and Technology Commission Project (No. 11dz1120302), Innovation Program of Shanghai Municipal Education Commission, Innovative Foundation of Shanghai University.
Dynamic analysis method of offshore jack-up platforms in regular and random waves.Journal of Marine Science And Application, vol1(1), 111-118 .(2012) [3] M.
Applied Mechanics and Materials, vol.34-35: 1104-1108.(2010) [6] Spidsoe N, Karunakaran D.