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Título: | Microstructure and high temperature mechanical properties of tin |
Autor: | Adeva, Paloma CSIC ORCID CVN ; Caruana, Guillermo; Ruano, Oscar Antonio CSIC ORCID | Palabras clave: | Tin Mechanical properties Microstructure |
Fecha de publicación: | 1995 | Editor: | Elsevier | Citación: | Materials Science and Engineering - A 194(1) : 17-23 (1995) | Resumen: | The mechanical properties of tin have been studied by tensile tests in the temperature range 293–463 K. Tensile tests were performed for cylindrical samples at a constant strain rate and varying strain rates during deformation. In-situ-tensile tests also were conducted in ribbon-form samples. At the strain rates studied, deformation takes place preferentially by slip, although some scattered twins also were observed at lower temperatures. Strong grain growth occurs at the higher temperatures. Microstructural observations of deformed samples show that dynamic recrystallization is not important in the temperature range investigated. The fracture surface of the cylindrical samples changes from a chisel type of fracture at the lower temperatures to a simple shear type of fracture at the higher temperatures. Both the tensile strength and ductility decrease with increasing temperature. An explanation is given for the loss of ductility at high temperatures. The activation energy for creep, obtained from strain-rate-change tests is 35 kJ mol−1 and the stress exponent is about 6. These values are related to a slip mechanism controlled by pipe diffusion. | Versión del editor: | http://dx.doi.org/10.1016/0921-5093(94)09654-6 | URI: | http://hdl.handle.net/10261/58237 | DOI: | 10.1016/0921-5093(94)09654-6 | ISSN: | 0921-5093 |
Aparece en las colecciones: | (CENIM) Artículos |
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