caa a22 4500 465812023 CHVBK 20180323112119.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF02833067 doi (NATIONALLICENCE)springer-10.1007/BF02833067 Effect of solution treatment parameters on tensile properties of cast aluminum alloys [Elektronische Daten] [S. Shivkumar, S. Ricci, C. Keller, D. Apelian] The influence of solution heat treatment parameters on T6 properties of unmodified and Sr-modified A356.2 alloys has been studied. The effects of solution temperature and time were investigated with ASTM B 108 test bars cast in sand molds and in permanent molds. Metallographic and image analysis techniques have been utilized to examine the microstructural changes occurring during heat treatment. The results indicate that the effect of Sr modification is to increase the spheroidization rate and lower the coarsening rate of Si particles. The solution temperature has a strong influence on Si particle morphology. Extremely high coarsening rates can be obtained at temperatures greater than 560° C. Solution treatment at these temperatures, however, has a detrimental effect on mechanical properties because of grain boundary melting. It has been established that solution times can be reduced significantly in modified samples. Increasing the solution temperature from 540 to 550°C enhances the strength properties. Springer-Verlag New York Inc, 1990 Shivkumar S. Aluminum Casting Research Laboratory, Department of Materials Engineering, Drexel University, 19104, Philadelphia, PA aut Ricci S. Aluminum Casting Research Laboratory, Department of Materials Engineering, Drexel University, 19104, Philadelphia, PA aut Keller C. Aluminum Casting Research Laboratory, Department of Materials Engineering, Drexel University, 19104, Philadelphia, PA aut Apelian D. Aluminum Casting Research Laboratory, Department of Materials Engineering, Drexel University, 19104, Philadelphia, PA aut Journal of Heat Treating Springer-Verlag 8/1(1990-03-01), 63-70 0190-9177 8:1<63 1990 8 136 https://doi.org/10.1007/BF02833067 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02833067 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shivkumar S. Aluminum Casting Research Laboratory, Department of Materials Engineering, Drexel University, 19104, Philadelphia, PA aut NATIONALLICENCE 700 1- Ricci S. Aluminum Casting Research Laboratory, Department of Materials Engineering, Drexel University, 19104, Philadelphia, PA aut NATIONALLICENCE 700 1- Keller C. Aluminum Casting Research Laboratory, Department of Materials Engineering, Drexel University, 19104, Philadelphia, PA aut NATIONALLICENCE 700 1- Apelian D. Aluminum Casting Research Laboratory, Department of Materials Engineering, Drexel University, 19104, Philadelphia, PA aut NATIONALLICENCE 773 0- Journal of Heat Treating Springer-Verlag 8/1(1990-03-01), 63-70 0190-9177 8:1<63 1990 8 136 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer