Presentation Title

Fabrication and Mechanical Behavior of Laminated Metallic Glass and Metal Composites

Start Date

November 2016

End Date

November 2016

Location

HUB 302-119

Type of Presentation

Poster

Abstract

Metallic Glass or Amorphous Metal holds to be the strongest class of metals in existence. Vitreloy is a modern amorphous metal that has tensile strength twice as high as titanium, however in room temperature it has low ductility. To compensate this trade off, a 2-Phase composite structure (2PCS) with a ductile crystalline metal was examined. The specific materials in focus here are vitreloy 106a and annealed nickel 200 because both behave similar in plastic deformation making them compatible for roll bonding. Due to the lack of grain structure in vitreloy 106a, it results in high mechanical strengths, hardness, plasticity and corrosion resistance. The crystalline structure of Ni yields to good ductility and malleability. Here we present our findings on the bonding mechanism and mechanical properties after hot roll bonding sheets of these materials in a sandwich 2PCS. Various preheating and rolling parameters were studied to further investigate the effects of these parameters. Using an Optical Microscope we reveal the elongation and reduction in a microscopic level. To reveal the mechanical properties we performed micro/nano indentation test. With the demand of stronger metals with higher ductility and strength, composites allows us to combine the best of both worlds with metallic glass being the leading material for strength and ductile metals for ductility.

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Nov 12th, 1:00 PM Nov 12th, 2:00 PM

Fabrication and Mechanical Behavior of Laminated Metallic Glass and Metal Composites

HUB 302-119

Metallic Glass or Amorphous Metal holds to be the strongest class of metals in existence. Vitreloy is a modern amorphous metal that has tensile strength twice as high as titanium, however in room temperature it has low ductility. To compensate this trade off, a 2-Phase composite structure (2PCS) with a ductile crystalline metal was examined. The specific materials in focus here are vitreloy 106a and annealed nickel 200 because both behave similar in plastic deformation making them compatible for roll bonding. Due to the lack of grain structure in vitreloy 106a, it results in high mechanical strengths, hardness, plasticity and corrosion resistance. The crystalline structure of Ni yields to good ductility and malleability. Here we present our findings on the bonding mechanism and mechanical properties after hot roll bonding sheets of these materials in a sandwich 2PCS. Various preheating and rolling parameters were studied to further investigate the effects of these parameters. Using an Optical Microscope we reveal the elongation and reduction in a microscopic level. To reveal the mechanical properties we performed micro/nano indentation test. With the demand of stronger metals with higher ductility and strength, composites allows us to combine the best of both worlds with metallic glass being the leading material for strength and ductile metals for ductility.