Fracture toughness and crack-resistance curve behavior in metallic glass-matrix composites

Title
Fracture toughness and crack-resistance curve behavior in metallic glass-matrix composites
Authors
Launey, MEHofmann, DC서진유Kozachkov, HJohnson, WLRitchie, RO
Keywords
beryllium alloys; composite materials; copper alloys; cracks; fracture toughness; metallic glasses; niobium alloys; titanium alloys; zirconium alloys
Issue Date
2009-06
Publisher
Applied physics letters
Citation
VOL 94, NO 24, 241910-1-241910-3
Abstract
Nonlinear-elastic fracture mechanics methods are used to assess the fracture toughness of bulk metallic glass BMG composites; results are compared with similar measurements for other monolithic and composite BMG alloys. Mechanistically, plastic shielding gives rise to characteristic resistance-curve behavior where the fracture resistance increases with crack extension. Specifically, confinement of damage by second-phase dendrites is shown to result in enhancement of the toughness by nearly an order of magnitude relative to unreinforced glass.
URI
http://pubs.kist.re.kr/handle/201004/45520
ISSN
0003-6951
Appears in Collections:
KIST Publication > Article
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