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  • 2005-2009  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 1110-1115 
    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: Authors have reported theses concerning the cast defect for publication in journal of Japanese FoundryEngineering Society and AFS Transactions. This is a review of these reports. There are various factors inthe casting defect that occurs in the article of casting metal, and specific of the generation factor is difficult.Moreover, it is necessary to decrease the casting defect to reduce the cost of goods manufactured andenergy of production. It is effective to the evaluation and the classification method of the casting defect toemploy Scanning Electron Microscopy with Energy Dispersion Spectrometer (SEM-EDS) and ElectronProbe Micro-Analysis (EPMA). Casting defects chose the one that the incidence was high and specific ofthe generation factor is difficult, and the pinhole defect and inclusion defects were classified according tothe generation factor, and penetration defect showed the relation of physical factor, chemical factor, andthose interactions, and examined whether specific of the factor was possible by the surface analysisequipment about other defects (Blow hole, Shrinkage, Orange peel, Cold shut, Cracks and Veining)
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 561-565 (Oct. 2007), p. 721-724 
    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: Fe-B-Cr alloy powder in diameter of 32-53 μm made by argon atomization is low-pressureplasma sprayed to produce a rapidly solidified iron base composite deposit with finely dispersedboride particles. The constituents of the as-sprayed deposit formed on a water-cooled substrate are αphase and amorphous phase that are supersaturated with chromium and boron due to high cooling rateduring solidification of the melt. Heat treatment of deposit at 873K leads to decomposition of theamorphous phase, resulting in the formation of Fe3B. The deposit heat treated above 1073K iscomposed of α phase and (Fe,Cr)2B. The as-sprayed deposit produced on a non-cooled substrateconsists of α phase and (Fe,Cr)2B. The fine precipitates of about 0.1 μm in the as-sprayed depositcoated on a non-cooled substrate are boride. As deposit temperature increases, the coarsening of theprecipitate particles results in lowered hardness of deposits
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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