Abstract
In this technical note, the formation and presence of a zone of equiaxed grains (EQZ) along the fusion boundary of welded aluminum-lithium alloy 2090 using filler metals containing zirconium and lithium is presented and discussed. However, no EQZ was evident in welded joints of alloy 2090 using the commercial filler metals: aluminum alloy 2319 and 4145. Under identical conditions, aluminum-lithium alloy 2090 was fusion welded using several new filler metals containing various amounts of zirconium and lithium. Results reveal an increase in the width of the zone of equiaxed grains with an increase in zirconium and lithium content in the filler metal. A viable mechanism for the formation of equiaxed grains and its relationship to filler metal composition is highlighted.
| Original language | English |
|---|---|
| Pages (from-to) | 304-309 |
| Number of pages | 6 |
| Journal | Materials Science and Engineering: A |
| Volume | 351 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - 25 Jun 2003 |
Keywords
- Al-Li alloy 2090
- Equiaxed grain zone
- Fusion boundary
- Solidification
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