Study of Steady State Creep and Lattice Parameters of Sn–1 wt% Zn Pewter near the Transition Temperature
✍ Scribed by Al-Ganainy, G. S.
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 393 KB
- Volume
- 169
- Category
- Article
- ISSN
- 0031-8965
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✦ Synopsis
Sn±Zn alloys have important commercial industrial applications such as soldering materials and can substitute the conventional white metal. Sn±1 wt% Zn pewter has been studied by tensile creep and X-ray diffraction analysis in the temperature range from 393 to 453 K. All the investigated parameters show one transformation temperature (423 K). The strain rate sensitivity parameter m has values ranging from 0.138 to 0.211 which indicates a dislocation mechanism. In the high temperature range (423 to 453 K) the activation energy Q st is found to have an average value of 91 kJ/mol which characterizes viscous self-diffusion of Sn as controlling mechanism. The dependence of the lattice parameters (a, c) on the working temperature is examined and show that at higher temperatures the thermal activated process causes lowering in the sum of internal lattice strains.