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Browsing by Author "Ivanchev, LH"

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  • Theron, M; Van Rooyen, C; Ivanchev, LH (ICALEO - International Congress on Applications of Lasers & Electro-Optics, 2007-10)
    A 4kW CW Nd:YAG laser was used for lap welding of three different dissimilar sheet metal combinations, namely 316L S/S - Ti64, 316L S/S - Al 5251 and Al 1200 – Cu (99.85%). A welding matrix of laser power, travel speed and ...
  • Theron, M; Knutsen, RD; Ivanchev, LH; Burger, HP (Elsevier, 2012-02)
    Semi-solid metal rheo-cast F357 aluminum plates were joined by autogenous Nd:YAG laser welding and were welded in either the as-cast (F) condition, T4 temper or T6 temper condition. The weldability of this age-hardenable ...
  • Kunene, G; Govender, G; Ivanchev, LH; Knutsen, R; Burger, HP (Trans Tech Publications, 2008-09)
    The CSIR rheo-process was used to prepare the aluminium A356 SSM slurries and thereafter plates (4x80x100 mm3) were cast using a 50 Ton Edgewick HPDC machine. Plates in the as cast, T4 and T6 heat treatment conditions which ...
  • Govender, G; Ivanchev, LH (RAPDASA 2005, 2005-10)
    The SSM forming technology has demonstrated that it will be a competitive process for the manufacture of high quality, high volume components for the automotive industry in particular. The new slurry approaches to SSM ...
  • Masuku, EP; Moller, H; Govender, G; Ivanchev, LH (2008-09)
    Rheocasting of alloys A206 and A201 was investigated in this study. Conical bars with different silver contents were produced using CSIR rheoprocess technology, together with high pressure die casting. The results showed ...