التفاصيل البيبلوغرافية
| العنوان: |
Evolution of segregation, microstructure and mechanical properties of a semisolid die casting Ale6Sie3Cue0.4Mg alloy. |
| المؤلفون: |
Jian Feng, Zikang Liu, Daquan Li, Jiahui Zhu, Song Chen, Fan Zhang, Xianchao Hao |
| المصدر: |
International Journal of Lightweight Materials & Manufacture; Jun2023, Vol. 6 Issue 2, p245-253, 9p |
| مصطلحات موضوعية: |
ALLOYS, SEMISOLID metal processing, MICROSTRUCTURE, TENSILE strength, DUCTILITY |
| مستخلص: |
Study on segregation, microstructure and mechanical properties of Ale6Sie3Cue0.4Mg alloy was achieved by controlling the filling length in semisolid die casting. Results show that the microstructure is comprised of globular aeAl, eutectic Si, qeAl2Cu, QeAl5Cu2Mg8Si6 and Feerich phase. After solution eageing treatment, abundant qeAl2Cu and QeAl5Cu2Mg8Si6 phases dissolve into the matrix. The liquid difference between the edge and middle area is 21.3% for 1/3 filling length, which is much higher than that of 15.0% for full filling length. As the filling length decreases, the increment of segregation degree at the bottom of the sample is detected. This segregation behavior leads to the strength and ductility both decreases from 425.0 MPa and 6.5% for 1/3 filling length to 405.3 MPa and 4.4% for full filling length, respectively. Besides, along with the formation of abundant fine qeAl2Cu phase and higher liquid fraction at the edge area, the ultimate tensile strength and elongation reaches 443.5 MPa and 5.2%. While in center area, the occurrence of coarsen qeAl2Cu phases leads to the tensile properties dramatically reducing to 378.7 MPa and 1.9%. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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