Thermally activated deformation and internal stress in alloys and composites
Investigator: RNDr. Karel Milička, DrSc.
Number of Project: IAA2041203
Agency: Grant Agency of the Academy of Sciences of the Czech Republic
Duration: 01. 01. 2002 - 31. 12. 2005
The project is aimed to a broadening of physical based knowledge of elevated temperature deformation mechanisms in selected advanced aluminium and magnesium alloys and composites on their bases. Fibre composites as well as particles strengthened composites prepared by modern techniques of powder metallurgy will be used for the investigations. Complex physical and thermodynamical analyses of the behaviour at various deformation modes, i.e., in tensile and compressive creep tests, creep tests at constant structure, tensile and compressive stress-strain tests, relaxation tests, internal friction tests and acoustic tests with simultaneous investigations of structure and its influence on the internal stress in these types of testing should yield new knowledge concerning decisive mechanisms determining this behaviour under various conditions.
Publications:
F. Dobeš, K. Milička:
Comparison of thermally activated overcoming of barriers in creep of aluminum and its solid solutions
Materials Science and Engineering A 387-389: 595-598, 2004.
Dobeš, Ferdinand, Milička, Karel:
Internal Stress and Activation Energy of Creep. Materials Science and Engineering A: Structural materials. Roč. 462, č. 1-2 (2007), s. 380-383. ISSN 0921-5093.