Abstract
The extrudability and mechanical properties of the Mg-7Sn-IAl-IZn (TAZ711) alloy were investigated by performing indirect extrusion at various temperatures and speeds and tensile tests and comparing the results with those of the Mg-8Al-0.5Zn (AZ80) alloy. When the AZ80 alloy was extruded at a high extrusion temperature of 450 V, or at extrusion temperatures above 350 °C with a high extrusion speed of 12 m/min, surface hot cracking occurred, while the TAZ711 alloy was successfully extruded without any surface defects at a high temperature of 450 V, with a high speed of 12 m/min. With an increasing extrusion temperature and speed, the average grain size of the extruded AZ80 and TAZ711 alloys increased and the yield and tensile strength decreased. The TAZ711 alloy had a higher yield strength and lower tensile strength and elongation than the AZ80 alloy extruded under the same conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 637-644 |
| Number of pages | 8 |
| Journal | Journal of Korean Institute of Metals and Materials |
| Volume | 51 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 2013 |
Keywords
- Extrudability
- Extrusion
- Mechanical properties
- Metals
- Optical microscopy