Hostname: page-component-8448b6f56d-qsmjn Total loading time: 0 Render date: 2024-04-25T00:51:25.118Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of R-Curve and Inhomogeneities on the Toughness Measurement of Metallic Glasses

Published online by Cambridge University Press:  21 February 2011

W. Henning ,
M. Calvo  and
F. Osterstock
W. Henning
Affiliation:
Institut für Werkstoffkunde und WerkstofftechnikTechnische Universität Clausthal, D-3392 Clausthal-Zellerfeld, FRG
M. Calvo
Affiliation:
on leave from Equipe Matériaux-Microstructure du L. A. 251 ISMRA-Université, F-14032 Caen Cedex, France
F. Osterstock
Affiliation:
on leave from Equipe Matériaux-Microstructure du L. A. 251 ISMRA-Université, F-14032 Caen Cedex, France
Get access

Abstract

Sub-critical crack growth is a function of the degree of relaxation of the amorphous structure and has implications regarding the measurement of annealing embrittlement and the dependence of embrittlement on temperature. The variation of Kc with annealing time is strongly dependent on the size of the initial crack length. Quenched-in inhomogeneities seem to be always present. Their effect depends on the specific testing conditions, especially the testing temperature because the ductile-brittle transition is a function of the degree of relaxation of the amorphous structure. Some doubt is also cast on the accepted assumption that a chevron pattern is representative of plane strain crack propagation conditions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 28: Symposium F – Rapidly Solidified Metastable Materials , 1983 , 203
Copyright
Copyright © Materials Research Society 1984

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Ogura, T., Fukushida, K. and Masumoto, T., Mat. Sci. Eng., 23, 231 (1976)10.1016/0025-5416(76)90199-3Google Scholar
2. Takayama, S. and Maddin, R., Mat. Sci. Eng., 23, 261 (1976)10.1016/0025-5416(76)90204-4Google Scholar
3. Davies, L.A., Met. Trans, 10A, 235, (1979)10.1007/BF02817633Google Scholar
4. Hunger, G., Doctorate Thesis, Technische Universität Clausthal, (1983)Google Scholar
5. Hendersson, S., Wood, J. V. and Weidmann, G. V., JMS-Letters, 2, 375 (1983)Google Scholar
6. Henning, W., Diplomarbeit, Technische Universität Clausthal, June 1983 Google Scholar
7. Calvo, M., DEA, University of Caen, October 1983 Google Scholar
8. Henning, W., Calvo, M. and Osterstock, F., to be publishedGoogle Scholar
9. Brown, W. F. and Strawley, J. E., Fracture Toughness Testing an its Applications, ASTM-STP 381, (1964)Google Scholar
10. Dixon, J. R. and Strannigan, J. S., “Fracture 1969”, Proceedings ICF-2, Brighton, April 1969, Chapman and HallGoogle Scholar