Characteristics of serrated flow in commercial Cu–Be–Co alloy
- 1 July 1988
- journal article
- research article
- Published by Maney Publishing in Materials Science and Technology
- Vol. 4 (7) , 578-585
- https://doi.org/10.1179/026708388790336208
Abstract
Serrated yielding in a Cu–l·8Be–0·3Co (wt-%) alloy has been studied as a function of strain rate and temperature. Serration characteristics, e.g. type, stress drop δσ, frequency ν, vacancy concentrations–strain exponent m, mobile dislocation density–strain exponent β, and activation energy Qm for serrated yielding, have been determined. Strain rate sensitivity of flow stress δσ/∆ ln ɛ and activation volume V parameters have also been derived through strain rate change tests. The results have been interpreted in the light of the static strain aging model of the Portevin–Le Chatelier effect. MST/540Keywords
This publication has 19 references indexed in Scilit:
- Effect of precipitation hardening on strain rate sensitivity and yield behaviour in an Al-Mg-Si alloyActa Metallurgica, 1979
- The effect of precipitation hardening on the portevin-le chatelier effect in an AlMgSi alloyActa Metallurgica, 1977
- Strain rate sensitivity and the portevin-le chatelier effect in Au–Cu alloysPhysica Status Solidi (a), 1975
- Theory of the effect of dynamic strain aging on mechanical propertiesPhysica Status Solidi (a), 1975
- Serrated yielding in a super alloy (40Co-38Ni-17Cr-5Ti)Acta Metallurgica, 1975
- The portevin-le chatelier effect in Cu3AuActa Metallurgica, 1974
- High resolution electron microscope observations on G.P. zones in an aged Cu-1.97wt.% Be crystalActa Metallurgica, 1973
- Serrated flow in alpha-beta brassScripta Metallurgica, 1973
- A model for the Portevin-Le Chatelier effect in substitutional alloysActa Metallurgica, 1972
- Formation of guinier-preston zones in CuBe alloysActa Metallurgica, 1968