Paper Title:
High Temperature Creep Behavior of Zn-1.0Cu-0.2Ti Alloy
  Abstract

In the present work, Zn-1.0Cu-0.2Ti alloy was prepared by melt casting and extruding processes. High temperature creep property of the alloy was determined using electronic creep relaxation testing machine. Microstructures of the alloy before and after creep test were observed and its high temperature creep mechanism was discussed. The results show that the steady-state creep rate of the alloy increases with temperature and stress. The logarithm of steady-state creep rate (ln) shows a linearity relationship with the logarithm of the stress (lnσ) and reciprocal of temperature (1/T). The stress exponent and apparent activation energy for creep have been determined to be 5.10 and 83.7 kJ/mol, separately. The predominant mechanism is mainly self-diffusional creep. The second phases on the grain boundary can block the slip of grain boundary and dislocation motion which can improve creep resistance of the alloy.

  Info
Periodical
Advanced Materials Research (Volumes 287-290)
Chapter
Building Materials
Edited by
Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li
Pages
769-776
DOI
10.4028/www.scientific.net/AMR.287-290.769
Citation
L. R. Xiao, X. M. Zhang, Y. Wang, W. Li, Q. S. Sun, Z. J. Geng, "High Temperature Creep Behavior of Zn-1.0Cu-0.2Ti Alloy", Advanced Materials Research, Vols. 287-290, pp. 769-776, 2011
Online since
July 2011
Export
Price
$32.00
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