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Accession Number:
AD0837112
Title:
THE RELATIONSHIP BETWEEN PRESSURE EFFECTS UPON FRACTURE MECHANISMS AND DUCTILITY AND ITS PRACTICAL IMPLICATIONS,
Descriptive Note:
Corporate Author:
WATERVLIET ARSENAL NY
Report Date:
1968-01-01
Pagination or Media Count:
15.0
Abstract:
The effects of superposed pressure upon the tensile ductility of a variety of metals have been measured by several investigators234. Typical results from these investigations are shown in Figure 1. As can be seen, the form of the ductility-pressure relationship and the response of ductility to pressure vary considerably between materials. In terms of the form of the ductility-pressure relationship, the various results tend to fall into four general categories. The first category is where the ductility increases at greater than a linear rate as is the case for Cu and Al. The second is where ductility increases at less than a linear rate as in Co. The third category is where ductility is a linear function of pressure as is observed for some steels and cast iron. The fourth category is where ductility abruptly increases over a narrow pressure region in what might be called a pressure-induced brittle-ductile transition as is observed in Zn, Bi and W. Author
Distribution Statement:
APPROVED FOR PUBLIC RELEASE