|About this Abstract
||Materials Science & Technology 2011
||MS&T'11 Poster Session
||115 Interface Microstructure and Mechanical Properties of Steel/Mg Alloy Multilayered Metal Composites by Infiltration
||Shoichi Nambu, Masaki Koba, Junya Inoue, Toshihiko Koseki, Arda Cetin, Andreas Rossoll, Andreas Mortensen
|On-Site Speaker (Planned)
Multilayered metal composites consisting of steel and Mg alloy are fabricated by infiltration, and the microstructure at the Mg/steel interface and the mechanical properties are characterized. Composites of this investigation combine type 304 stainless steel (SS304) with magnesium alloys ZM21 containing Zn and Mn or AZ63 containing Al and Zn. In SS304/AZ63 composites, a thick intermetallic compound, FeAl, is observed at the interface. No interfacial intermetallic compound is formed in the SS304/ZM21 combination; however, Mn-enrichment is observed near the interface. The toughness of the SS304/AZ63 interface is quite low owing to the thick intermetallic compound at the interface, while that of the SS304/ZM21 interface was high enough for cracks to deviate from the interface into the ZM21 layer. Results demonstrate that microstructures around the interface and mechanical properties are strongly affected by alloying elements of Mg alloys, and that with appropriate alloy compositions, strongly bonded composites can be produced.