Accession Number : AD0463896


Title :   Deformation Processing of Anisotropic Metals


Descriptive Note : Progress rept. no. 3, 1 Nov-31 Dec 1964


Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE METALS PROCESSING LAB


Personal Author(s) : Avery, D H ; Backofen, W A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/463896.pdf


Report Date : Jan 1965


Pagination or Media Count : 11


Abstract : Elevated-temperature tensile test were carried out on the alloy Zircaloy 4. As in the case of the Ti alloy 2.5 Sn-4 A1, a very sharp maximum in strain rate sensitivity, m, was found at or near the alpha-beta transus. Elongation values again correlated with strain rate sensitivity; however the maximum value of 220% was not as striking as in the titanium alloy. Values of strain ratio, R, were high in Zircaloy 4 (approximately 4 at Rt) and decreased with increasing testing temperature. For temperatures below 600 C, R was relatively constant with strain. In the range 600 to 800 C, R was found to increase remarkably after the onset of necking. In this temperature range necking occurred only in the width direction, leading to chisel-edged fractures showing 100% reduction in width and R values approaching infinity.


Descriptors :   *ZIRCONIUM ALLOYS , DEFORMATION , TRANSITION TEMPERATURE , SCIENTIFIC RESEARCH , PLASTIC PROPERTIES , TRANSFORMATIONS , HIGH TEMPERATURE , ANISOTROPY


Subject Categories : Metallurgy and Metallography


Distribution Statement : APPROVED FOR PUBLIC RELEASE