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Fracture of Metals, Polymers, and Glasses - Proceedings of the Fourth Symposium on Fundamental Phenomena in the Materials Sciences (Paperback, Softcover reprint of the original 1st ed. 1967)
Loot Price: R2,931
Discovery Miles 29 310
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Fracture of Metals, Polymers, and Glasses - Proceedings of the Fourth Symposium on Fundamental Phenomena in the Materials Sciences (Paperback, Softcover reprint of the original 1st ed. 1967)
Series: Fundamental Phenomena in the Materials Science, 4
Expected to ship within 10 - 15 working days
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Elucidation of the various mechanisms responsible for fracture in
different materials was the general subject of the Fourth Annual
Symposium on Fundamental Phenomena in the Materials Sciences held
January 31 and February 1, 1966, in Boston and sponsored by the
Ilikon Corporation of Natick, Massachusetts. In an analysis of the
brittle-to-ductile transition in polycrystalline metals, T. L.
Johnston (Ford Motor Company) placed major emphasis on factors
related to the plastic resistance associated with grain boundaries
and the effects of plastic anisotropy. Utilizing a generalized form
of the Griffith criterion, he said it can be readily shown that
several individual factors may be made reasonably quantitative and
that the nature of plastic response can be predicted. Specifically,
it can be shown that a critical factor relates to the length of a
plastic shear zone which is constrained by an elastically loaded
matrix. As this length increases, the Griffith inequality is
satisfied and brittle failure occurs; however, the use of decreased
grain sizes or the refine ment of dislocation or twin distribution
can further tend to "homoge nize" the plastic flow and to decrease
the magnitude of the shear zone. Of considerable importance in the
consideration of plastic resistance is the availability of
favorably oriented slip systems in aa un sheared crystallite."
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