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  • 1
    Electronic Resource
    Electronic Resource
    Serial Simulation of Ceramic Grain Growth Based on Ternary-Tree Structure and Space Partition (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 336-338 (Apr. 2007), p. 2536-2539 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: An improved serial computation method is proposed for simulating ceramic grain growth at anatomic scale. The data structure of a ternary tree is used to store orderly the atomic information and speedup the editing of data. Combining with the idea of space partition, an index for space searching isestablished to reduce the computation time. Simulation results demonstrate that the speed of the serialcomputation is increased significantly and simulated images are in good agreement with micrographs ofpractical ceramics. It is illustrated that kinetic exponents and fractal dimensions during the simulation ofgrain growth are also reasonable in compare with quantitative analyses
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.2536.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Parallel Simulation of Ceramic Grain Growth on the Platform of MPI (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 336-338 (Apr. 2007), p. 2490-2492 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A computation method for parallel simulations of ceramic grain growth at an atomic scale in aPC cluster is proposed, by combining the Message Passing Interface (MPI) with the serial simulation ofgrain growth. A parallel platform is constructed for the simulation of grain growth with program modulesof grain assignments, grain growth, data exchanges and boundary settlements, which are coded withMicrosoft Visual C++ 6.0 and MPICH. Quantitative results show that the computing speed of parallelsimulations with this platform is obviously increased compared with that of serial simulations. Such acomputing mode of grain growth is in good agreement with practical situations of ceramic grain growth
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.2490.pdf
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Advancement in Prediction and Control of Welding Residual Stress and Distortion (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 3943-3948 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Weld modeling technology and control and mitigation techniques of residual stress anddistortion have made a significant progress in the past decade. Q-Weld as the latest development inweld modeling technique can provide a solution in an extremely short time compared to a traditionalthermo-elastic-plastic analysis. Three distortion control techniques, transient thermal tensioning, lowstress non-distortion and in-process rolling, are discussed in this paper
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.3943.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Practical Evolutions and Computer Simulation of Pores in BaTiO〈sub〉3〈/sub〉 Ceramics during Sintering Process (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 368-372 (Feb. 2008), p. 1585-1587 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Practical evolutions of pores in BaTiO3 ceramics during sintering are studied, including thepreparation of practical BaTiO3 ceramics and observation of ceramic microstructure by SEM. Thereduction of porosity and thus dense process results from the change of the free energy in the ceramicsystem, which is altered by the disappearing of the interface between solid and pore. The sintering processare monitored, including sintering neck growth, pore shape and size changing, grain growth and compactbody contracting. Theoretical formulae during the sintering process are applied for the computer simulation.The experimental results of BaTiO3 ceramics are in good agreement with that of simulation
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1585.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of Cu doping at the Mn site on the transport aaand magnetic behaviors of La 2/3 Ca 1/3 MnO3 (2001)
    Springer
    The European physical journal 20 (2001), S. 177-181 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 75.30.Vn Colossal magnetoresistance – 75.30.Kz Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.) – 75.25.+z Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source X-ray scattering, etc.)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We show that the replacement of Mn with Cu, without any structure change, strongly affects the transport and magnetic behaviors in La 2/3 Ca 1/3 Mn1-xCuxO 3 - δ (x ?0.3). Doping largely shifts the insulator-metal transition towards the low-temperature regime and causes substantial enhancements in both resistance and magnetoresistance near the transition for doping range of x ? 15%, and further doping to x ≥ 20% shows insulating behavior. For 15% doping, the sample shows large magnetoresistances (∼104%) over the whole low temperature range. Magnetization measurement at helium temperature reveals that samples for x ? 10% and ≥ 20% basically show ferromagnetic (FM) and antiferromagnetic (AF) behaviors, respectively, while the 15% Cu doped sample undergoes a metamagnetic transition from AF state to FM state on increasing field. We argue that doping introduces the AF insulating phase into the system, causing unusual transport and magnetic behaviors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01315688
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    Paper (German National Licenses)
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