About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Dynamic Behavior of Materials IX
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Presentation Title |
Evaluation of the Effectiveness of Additive Friction Stir Deposition for Ballistic Repair of Aluminum Alloy 7075 |
Author(s) |
George Stubblefield, Malcolm Brady Williams, Zack Tew, Russell Rowe, Craig Mason, James Jordon, Paul Allison, Mark Barkey |
On-Site Speaker (Planned) |
Malcolm Brady Williams |
Abstract Scope |
In this work, Additive Friction Stir Deposition (AFSD) was employed for ballistic repair of AA7075-T6511 plates. After ballistic penetration with 7.62x51 FMJ rounds, the AA7075-T6511 plates were repaired using AFSD with AA7075 as the filler material feedstock. The repaired plates were shot with the same 7.62x51 FMJ rounds, and the damage characteristics and initial vs residual velocities were compared against the original plates. AFSD successfully repaired the damaged original plates, without any obvious defects such as large cracks or pores. Although the surface looked pristine other than milling marks, the damage characteristics of the repaired plates were significantly different than the original plates. The increase of spalling and petalling with the repaired material can be attributed to the thermomechanical processing of AFSD, which would alter the original T6511 temper. Despite the damage discrepancy, the repaired plates performed similarly to the original plates with respect to initial vs residual velocity. |
Proceedings Inclusion? |
Planned: |