Forming of bulk metallic glass microcomponents

Publication: Research - peer-reviewJournal article – Annual report year: 2009

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The present article considers forward extrusion, closed-die forging and backward extrusion processes for fabrication of individual microcomponents from two bulk metallic glass (BMG) compositions: Mg60Cu30Y10 and Zr44Cu40Ag8Al8. Two types of tooling were used in the present work: relatively massive die sets characteristic of cold forming operations for crystalline metals and lightweight die sets adapted to the special characteristics of BMGs. In addition to demonstrating that microcomponents of several geometries can be readily fabricated from BMGs, rheological properties are combined with crystallization kinetics to formulate a generally applicable method that can guide selection of optimal forming parameters. Finally, the use of particulate-based lubricants for BMG forming is shown to result in individual lubricant particles becoming mechanically locked into the BMG surface. (C) 2008 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalJournal of Materials Processing Technology
Publication date2009
Volume209
Journal number3
Pages1570-1579
ISSN0924-0136
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 10

Keywords

  • Materials research
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