Tensile fracture of free machining brass as a function of hydrostatic pressure

Published on Aug 1, 1973in Acta Metallurgica
· DOI :10.1016/0001-6160(73)90020-5
I.E. French7
Estimated H-index: 7
,
P.F Weinrich2
Estimated H-index: 2
,
C.W. Weaver2
Estimated H-index: 2
(Australian Department of Defence)
Source
Abstract
Abstract The effects of hydrostatic pressures in the range 0.1 to 600 MPa on the tensile fracture of a free machining brass have been studied. In agreement with the results of earlier workers, the natural strain to fracture was found to increase rapidly with pressure for pressures up to 300 MPa, but to increase less rapidly at the higher pressures. The rapid increase in ductility under confining pressures up to 300 MPa is shown to be due to the suppression of void development, by the pressure, until later stages of deformation. The decrease in slope of the fracture strain pressure relationship above 300 MPa pressure was found to coincide with the localization of void formation to a narrow region at the centre of the neck.
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