4th International Conference Recent Trends in Structural Materials | |
Effects of the pouring temperature on the formation of the bonding zone between AZ91 and AlSi17 in the compound casting process | |
Mola, R.^1 ; Bucki, T.^1 ; Dziado, A.^1 | |
Kielce University of Technology, EU, Kielce, Poland^1 | |
关键词: AZ91 magnesium alloys; Bonding zone; Compound castings; Energy dispersive x-ray; Eutectic structures; Intermetallic phase; Metallurgical transition; Pouring temperatures; | |
Others : https://iopscience.iop.org/article/10.1088/1757-899X/179/1/012053/pdf DOI : 10.1088/1757-899X/179/1/012053 |
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来源: IOP | |
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【 摘 要 】
The compound casting process was used to join AZ91 magnesium alloy to AlSi17 aluminium alloy. Liquid AZ91 was poured onto a solid AlSi17 insert placed in a steel mould heated to 370 C. The experimental results showed that the temperature of the AZ91 melt affected the formation of the bonding zone between the two alloys. A continuous bonding zone was formed by applying a pouring temperature of 650 C. The use of higher temperatures, i.e. 680 C and 700 C, did not lead to the formation of a continuous metallurgical transition zone at the AZ91/AlSi17 interface. The bonding zone was analysed using an optical microscope and a scanning electron microscope equipped with an energy dispersive X-ray (EDS) detector. The structural constituents of the bonding zone near the AlSi17 alloy were: an Al3Mg2intermetallic phase, primary Si particles surrounded by a rim of an Mg2Si intermetallic phase and fine Mg2Si particles. The area of the bonding zone that was adjacent to the AZ91 alloy had a eutectic structure composed of an Mg17Al12intermetallic phase and a solid solution of Al and Si in Mg.
【 预 览 】
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Effects of the pouring temperature on the formation of the bonding zone between AZ91 and AlSi17 in the compound casting process | 1366KB | ![]() |