Abstract
The evolution of semi-solid microstructure in 7075 aluminum alloy extruded bar was investigated by three stages induction heating. A semisolid thixoforming mold for a certain type of fin structure was designed. The microstructure of 7075 high-strength aluminum alloy tail fin made by semisolid thixotropy-plastic composite near net forming was observed by OM and SEM. With the average heating speed of 4 ℃/s, the highest heating temperature at upper end of the billets of 620 ℃ for 5 min, the complex thin-walled position at the workpiece presents complete shape and high dimensional accuracy, and the microstructure of its longitudinal section is the gradient microstructure of semi-solid to solid state.
| Translated title of the contribution | Experimental Study on Semi-solid Thixotrophic-plastic Composite Forming of 7075 Aluminum Alloy |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 381-385 |
| Number of pages | 5 |
| Journal | Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys |
| Volume | 39 |
| Issue number | 4 |
| DOIs | |
| State | Published - 20 Apr 2019 |
| Externally published | Yes |
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