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Novel manufacturing process of nanoparticle/Al composite filler metals of tungsten inert gas welding by accumulative roll bonding

Fattahi, M ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1016/j.msea.2015.09.053
  3. Publisher: Elsevier Ltd , 2015
  4. Abstract:
  5. In the present work, accumulative roll bonding (ARB) was used as an effective method for manufacturing nanoparticle/Al composite filler metals of tungsten inert gas (TIG) welding. After welding, the distribution of ceramic nanoparticles and mechanical properties of welds were investigated. By applying ARB, ceramic nanoparticles were uniformly dispersed in the composite filler metals. Consequently, the welds produced by these filler metals had a uniform dispersion of ceramic nanoparticles in their compositions. The test results showed that the yield strength of welds was greatly increased when using the nanoparticle/Al composite filler metals. The improvement in the yield strength was attributed to the coefficient of thermal expansion mismatch and Orowan strengthening mechanisms. Therefore, according to the results presented in this paper, it can be concluded that the nanoparticle/Al composite filler metals can serve as a novel filler metal for TIG welding of aluminum and its alloys
  6. Keywords:
  7. Tungsten inert gas welding ; Ceramic materials ; Fillers ; Gas welding ; Inert gas welding ; Inert gases ; Ionization of gases ; Manufacture ; Mechanical properties ; Metal nanoparticles ; Metals ; Nanoparticles ; Roll bonding ; Thermal expansion ; Tungsten ; Welding ; Welds ; Yield stress ; Accumulative roll bonding ; Aluminum and its alloys ; Ceramic nanoparticles ; Composite fillers ; Manufacturing process ; Strengthening mechanisms ; Tungsten inert gas welding ; Uniform dispersions ; Filler metals
  8. Source: Materials Science and Engineering A ; Volume 648 , 2015 , Pages 47-50 ; 09215093 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0921509315303944