Comparison of Fatigue Strengths of Bulk Metallic Glasses Produced by Tilt Casting and High-Pressure Casting

High fatigue strength is one of the important factors that facilitates the industrial usage of bulk metallic glasses (BMGs). Fatigue data were analyzed using the Weibull probability models for BMGs produced with different casting processes in order to study the reliability of fatigue strengths of ca...

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Bibliographic Details
Published in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2010-07, Vol.41 (7), p.1780-1786
Main Authors: Yokoyama, Yoshihiko, Gary Harlow, D., Liaw, Peter K., Inoue, Akihisa
Format: Article
Language:English
Subjects:
Advantages
Alloys
Applied sciences
Bond strength
Casting
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cold
Crack initiation
Crack propagation
Exact sciences and technology
Fatigue
Foundry engineering
Materials Science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metallic Materials
Metals. Metallurgy
Nanotechnology
Pressure before casting
Production techniques
Propagation
Scanning electron microscopy
Structural Materials
Surfaces and Interfaces
Symposium: Bulk Metallic Glasses VI
Thin Films
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Summary:High fatigue strength is one of the important factors that facilitates the industrial usage of bulk metallic glasses (BMGs). Fatigue data were analyzed using the Weibull probability models for BMGs produced with different casting processes in order to study the reliability of fatigue strengths of cast glassy alloys. The fatigue data of tilt-cast and high-pressure-cast BMGs can be explained by a three-parameter Weibull cumulative distribution function (cdf) and a mixture model of two-parameter Weibull cdfs, respectively. We conclude that the cast defects, which reduce fatigue strength, should be eliminated in order to realize a high reliability of fatigue strengths.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-010-0218-2