Forming of bulk metallic glass microcomponents

被引：17

作者：

Wert, John A. ^{[2
]}

Thomsen, Christian ^{[1
,3
]}

Jensen, Rune Debel ^{[3
]}

Arentoft, Mogens ^{[3
]}

机构：

[1] Elos Pinol AS, DK-3330 Gorlose, Denmark

[2] Tech Univ Denmark, Mat Res Dept, Riso Natl Lab Sustainable Energy, DK-4000 Roskilde, Denmark

[3] IPU Mfg, Prod Storvet, DK-2800 Lyngby, Denmark

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2009年 / 209卷 / 03期

关键词：

Bulk metallic glass; Metal forming; Microcomponent; Forming parameter optimization; Lubrication; SUPERCOOLED LIQUID-STATE; AMORPHOUS-ALLOYS; NEWTONIAN VISCOSITY; MICRO-FORMABILITY; VISCOUS-FLOW; DEFORMATION; SUPERPLASTICITY;

D O I：

10.1016/j.jmatprotec.2008.04.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：1570 / 1579

页数：10

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