WIT Press


Time Dependent Microplasticity Of Recrystallized Molybdenum Near Room Temperature

Price

Free (open access)

Paper DOI

10.2495/LD960471

Volume

13

Pages

8

Published

1996

Size

592 kb

Author(s)

D.L. Chen, B. Weiss & R. Stickler

Abstract

Time dependent microplasticity of recrystallized molybdenum near room temperature D.L. Chen, B. Weiss, R. Stickler University of Vienna, Austria Introduction It is well known that the flow stress of bcc metals is strongly dependent on temperature, strain rate and impurity content, in particular below a characteristic transition temperature considered to correspond to approximately 0.2 T^, (1,2). This dependence has been attributed to the characteristic behavior of screw dislocations (3,4). It is now generally accepted that the flow stress of high purity bcc metals below this transition temperature is governed by the formation and mobility of kink pairs on screw dislocations (3). Only few investigations on the deformation behavior of bcc-metals at stresses below the flow stress have been published (5). This stress region has been termed the region of "microstrain" or "microplasticity". Investigations were focused on fee, hep and bcc single phase metals. The important findings

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