Metal
EN AW-7108A research alloy A2, extruded and solution-treated (CC BY)
Exact-grade instance composition and Al3Zr dispersoid measurements for research alloy A2.
Properties
Chemical
| Property | Value | Unit |
|---|---|---|
| Silicon mass fraction | 0.23 | % |
| Magnesium mass fraction | 1.0 | % |
| Manganese mass fraction | 0.05 | % |
| Iron mass fraction | 0.25 | % |
| Copper mass fraction | 0.05 | % |
| Titanium mass fraction | 0.04 | % |
| Chromium mass fraction | 0.04 | % |
| Zinc mass fraction | 5.91 | % |
| Zirconium mass fraction | 0.23 | % |
| Aluminum mass fraction | 92.3 | % |
Microstructure
| Property | Value | Unit |
|---|---|---|
| Al3Zr dispersoid TEM counted particles | 3252 | count |
| Al3Zr dispersoid TEM median diameter | 12.9 | nm |
| Al3Zr dispersoid TEM median 95% confidence interval | 0.2 | nm |
| Al3Zr dispersoid TEM mean diameter | 14.9 | nm |
| Al3Zr dispersoid TEM mean-diameter standard deviation | 0.9 | nm |
| Al3Zr dispersoid TEM minimum detected diameter | 3.5 | nm |
| Al3Zr dispersoid TEM foil thickness | 107.5 | nm |
| Al3Zr dispersoid LV-BSE counted particles | 734 | count |
| Al3Zr dispersoid LV-BSE median diameter | 15.1 | nm |
| Al3Zr dispersoid LV-BSE median 95% confidence interval | 0.3 | nm |
| Al3Zr dispersoid LV-BSE mean diameter | 17.2 | nm |
| Al3Zr dispersoid LV-BSE mean-diameter standard deviation | 0.5 | nm |
| Al3Zr dispersoid LV-BSE minimum detected diameter | 6.4 | nm |
Units
Condition
- Condition
- source-identified EN AW-7108A research-alloy variant after solution treatment and water quench
- Temper
- laboratory solution-treated and water-quenched state; no registered temper stated
- Heat treatment
- two-step homogenization: 450-490 degC for 3 h, then 490 degC for 9 h; solution anneal 480 degC for 30 min; water quench
- Product form
- vertically continuously cast billet extruded as a double hollow-chamber profile
- Thickness / diameter range
- source profile geometry shown in Figure 1; numerical wall dimensions not stated in text/table
- Test direction
- profile-top microstructure samples; mechanical direction not applicable
- Processing route
- vertical continuous casting; two-step homogenization; extrusion at 490 degC and 4 mm/s ram speed; solution anneal and water quench
- Temperature range
- Composition and post-process dispersoid measurements are not supplied as temperature-dependent properties.
- Notes
- The two cards preserve the article's A1 and A2 research-alloy identities and do not merge their measured populations.
Standards
No material standards linked.
Record status
- Category
- Metal
- Unit system
- Common SI