ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Microfracture mechanisms of Zr-based bulk metallic glass (BMG) alloy containingductile crystalline particles were investigated by directly observing microfracture processes usingan in situ loading stage. Strength of the BMG alloy containing crystalline particles was lower thanthat of the monolithic BMG alloy, while ductility was higher. According to the direct microfractureobservation, crystalline particles initiated shear bands, acted as blocking sites of shear band or crackpropagation, and provided the stable crack growth which could be confirmed by the R-curveanalysis, although they negatively affected apparent fracture toughness. This increase in fractureresistance with increasing crack length improved overall fracture properties of the alloy containingcrystalline particles, and could be explained by mechanisms of blocking of crack or shear bandpropagation, formation of multiple shear bands, crack blunting, and shear band branching
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.645.pdf
Permalink