Fig. 1. Photo of the diecast ALDC12 alloy heat treated for various time at high temperatures.
Fig. 2. Graph shows the solid fractions of three phases along the temperature drop in ASC alloy during solidification.
Fig. 3. XRD results of the gravity casted ASC alloys (left) and ALDC12 alloys (right) with various solid solution times.
Fig. 4. XRD results of the die casted ASC alloys (left) and ALDC12 alloys (right) with various solid solution times.
Fig. 5. OM micro structures of the gravity casted for ASC and ALDC12 alloys. SST means solid solution treatment time at 500℃.
Fig. 6. OM micro structures of the die casted for ASC and ALDC12 alloys. SST means solid solution treatment time at 500℃.
Fig. 7. FE-SEM photographs and EDS Spectrums of the gravity casted ALDC12 alloy. (a): eutectic Si, (b): Al matrix and (c): α-AlFe(Mn)Si.
Fig. 8. FE-SEM photographs and EDS Spectrums of the gravity casted ALDC12 alloy. (a),(c): α-AlFe(Mn)Si, (b),(d): Al2CuMgSi.
Fig. 9. FE-SEM micro structures of the die casted for ASC and ALDC12 alloys. SST means solid solution treatment time at 500℃.
Fig. 10. FE-SEM micro structures of the die casted for ASC and ALDC12 alloys. SST means solid solution treatment time at 500℃.
Fig. 11. Results of the relationships between the hardness and the solid solution treatment conditions for the gravity casted ASC and ALDC12 alloys.
Fig. 12. Results of the relationships between the tensile properties and the solid solution treatment conditions for the gravity casted and the diecasted ASC and ALDC12 alloys respectively.
Table 1. Chemical compositions of the ASC and ALDC12 alloys.
Table 2. Thermodynamic solidification analysis of ASC alloy by PANDAT.
Table 3. Thermodynamic solidification analysis of ALDC12 alloy by PANDAT.
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