Paper Title:
Hot Deformation Behavior of Multi-Size Al2O3 Particles Dispersion Strengthened Copper Base Composite
  Abstract

The multi-size Al2O3 particles dispersion strengthened copper base composite (i.e. Al2O3/Cu-0.6%Al2O3 composite) was prepared by the vacuum hot-press sintering-internal oxidizing method. The hot deformation behavior of Al2O3/Cu-0.6%Al2O3 composite was investigated by the isothermal compression tests at the temperature range from 600°C to 950°C and strain rates of 0.001 s-1 and 1s-1 respectively with a Gleeble-1500D thermal simulator system. The results show that the flow stress-strain curves of Al2O3/Cu-0.6%Al2O3 composites indicate the softening mechanism of recrystallization. The flow stress increases with the deformation strain increasing, then decreases and tends to be steady. The hot deformation activation energy is calculated as 116.46 kJ/mol for the Al2O3/Cu-0.6%Al2O3 composite. The strain-stress constitutive equation is established on the basis of above results.

  Info
Periodical
Chapter
Chapter 1: Novel and Advanced Materials, Materials Science and Technologies
Edited by
Qingzhou Xu
Pages
270-273
DOI
10.4028/www.scientific.net/AMR.721.270
Citation
X. R. Yang, B. H. Tian, Y. Zhang, Y. Liu, "Hot Deformation Behavior of Multi-Size Al2O3 Particles Dispersion Strengthened Copper Base Composite", Advanced Materials Research, Vol. 721, pp. 270-273, 2013
Online since
July 2013
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$32.00
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