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Hot deformation behavior of squeeze casting SiC/2A50 matrix composites.
- Source :
- Journal of Wuhan University of Technology; Jun2012, Vol. 27 Issue 3, p443-449, 7p
- Publication Year :
- 2012
-
Abstract
- The flow stress behaviors of squeeze casting SiC/2A50 matrix composites were investigated by means of compression tests on a Gleeble 1500 therma1 mechanical simulator at isothermal constant strain rates ranging from of 0.001 to 1.0 with the testing temperature ranging from 350 to 500°C. The experiments showed that the relationship between stress and strain was obviously influenced by the strain rate and temperature. Dynamic recrystallization generally occurred at a higher temperature and a 1ower strain rate. A linear equation could be fitted between the Zener-Hollomon parameter Z and stress in the experiments. The mean value reciprocal of temperature at every true strain had a linear relation with natural logarithm of Z parameter, and the correlation coefficient, R=0.99, which was very significant by examination. The hot deformation activation energy of SiC/2A50 matrix composites was 163.47 KJ/mol by calculation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10002413
- Volume :
- 27
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Wuhan University of Technology
- Publication Type :
- Academic Journal
- Accession number :
- 76446535
- Full Text :
- https://doi.org/10.1007/s11595-012-0482-7