Effects of Aging Temperature on Microstructure and Thermal Properties of CuAlMn Shape Memory Alloys
The use of copper-based shape memory alloys is increasing rapidly. In this study, the aging effects of CuAlMn shape memory alloys were investigated. Three different alloys were produced during the work. These alloys were then aged for one hour at temperatures of 200 ° C, 300 ° C, 400 ° C and 500 ° C. DSC, XRD and microstructural investigations were carried out on samples which were not aged and aged at different temperatures. Experiments have shown that aging at high temperatures has an adverse effect on shape memory effect on alloys.
Quantitative texture analysis, including calculation of the orientation distribution function, is used to demonstrate textures in alumina hot-forged at 1800°C. As suggested by earlier investigations, strong basal textures can be produced by pressing and forging alumina. Experiments in plane strain support arguments for slip-based texture development. Since the earlier investigations provided incomplete information on preferred orientation, a comparison is made of current and past procedures used to report textures in alumina.