CREEP-BEHAVIOR OF AL-10WT-PERCENT-ZN ALLOY WITH DIFFERENT GRAIN DIAMETERS IN THE HIGH-STRESS REGION

Authors
YOUSSEF SB FAWZY A SOBHY M SAAD G
Citation
Sb. Youssef et al., CREEP-BEHAVIOR OF AL-10WT-PERCENT-ZN ALLOY WITH DIFFERENT GRAIN DIAMETERS IN THE HIGH-STRESS REGION, Indian Journal of Pure & Applied Physics, 31(11), 1993, pp. 823-827
Citations number
NO
Categorie Soggetti
Physics
Journal title
Indian Journal of Pure & Applied Physics → ACNP
ISSN journal
00195596
Volume
31
Issue
11
Year of publication
1993
Pages
823 - 827
Database
ISI
SICI code
0019-5596(1993)31:11<823:COAAWD>2.0.ZU;2-1
Abstract
Creep properties of Al-10wt%Zn alloy were studied using specimens of d ifferent grain diameters in the high stress range 163-193 MPa. The tra nsient parameter n was found to increase with increasing grain diamete r, A decrease in the steady state creep rate was obtained by increasin g grain diameter according to a Petch style relation. In this high str ess region, the stress exponent, m increases with grain diameter. This was explained as due to the transition in climb velocity of dislocati ons from a linear to an exponential function of stress.