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Metal Dusting-Mechanisms and Preventions () 摘要:Metal dusting attacks iron, low and high alloy steels and nickel-or cobalt-base alloys by disintegrating bulk metals and alloys into metal particles... mechanism is still not well understood. Current methods of protection against metal dusting are either directed to the process conditions-temperature and gas composition-or to the development of a dense......
electronics industry. In the refined metal casting process, grain size distribution and proportionality often cause sizing effects during post-casting treatments, and hence affect the final product... Numerical simulation of solidification morphologies of Cu-0.6Cr casting alloy using modified cellular automaton model TSAI De-chang, HWANG Weng-sing Department of Materials Science......
and distinct distribution of the magnetic flux in the metals even under the uniform experimental parameters, so that the feasibility of the different metal to achieve electromagnetic casting is distinct... the electromagnetic casting, it is necessary for the stability of the meniscus that depends on the equilibrium between the electromagnetic force and the static pressure of the molten metal. As a first......
used for the present investigation are Al356/10SiC (wt%) metal matrix and Al356/10SiC-3mica (wt%) hybrid composites. The composites are fabricated using stir casting route. The drilling tests...Analysis of Surface Integrity in Drilling Metal Matrix and Hybrid Metal Matrix CompositesJ.Paulo Davim33. Department of Mechanical Engineering,University of Aveiro,Campus Santiago,3810-193 Aveiro......
of plastic deformation. REFERENCES [1]Brungs D. Light weight design with light metal casting [J]. Materials & Design, 1997, 18(4/6): 285-291. [2]Cole G S. Issues that influence magnesiums use...Microstructure and mechanical properties of magnesium alloy prepared by lost foam casting TIAN Xue-feng(田学锋), FAN Zi-tian(樊自田), HUANG Nai-yu(黄乃瑜), WU He-bao(吴和保), DONG Xuan-pu(董选普) (State Key......
. In liquid metal stir casting, both injection of the particles and pouring of the resultant composite slurry were carried out in a fully liquid state. On the other hand, in the case of compocasting... of the reinforcement addition but the casting method does not influence the impact energy. References [1] RAY S. ZnO: Synthesis of cast metal matrix particulate composites [J]. Journal of Materials......
in crucible to flow up from bottom to the top of the riser tube. 2) Mold filling: the pressure is increased sequentially to force the molten metal into the casting cavity through gating system. 3) Shell phase: once the casting cavity is completely filled, the pressure is suspended, for the molten metal near mold wall has enough time to solidify to form a hard shell. 4) Pressure increasing: when......
on roll/metal interface. Based on the assumptions steady-state simulations were performed. The temperature field result of twin-roll casting process is shown in Fig.2. Fig.2 Temperature field...; (14) The assumption of no slip condition between roll/metal interfaces is not accurate in twin-roll casting process, this will result in some increased compress stress level. In multidimensional case......
Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences2. Shenyang Ligong University3. Advanced Manufacturing Technology Research Centre, Department of Industrial... and twin-roll casting, respectively. The increase in thickness of either ribbons or strips results in a lower energy state with a smaller relaxation enthalpy, a lower content of free volume, and a higher......
becomes incompact when the vacuum degree reaches 0.08 MPa, as shown in Fig.3(c). A conclusion is drawn that the casting infiltration driving force of metal liquid increases remarkably... Mg alloy surface alloying layer fabricated through evaporative pattern casting technology CHEN Dong-feng(陈东风), DONG Xuan-pu(董选普), ZHANG Xiong(张 雄), FAN Zi-tian(樊自田) State Key Laboratory......
