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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Failure, and a Career That is Anything But: An LMD Symposium Honoring J. Wayne Jones
Presentation Title Tear Resistance of AA7075-T6 Sheet at Room Temperature and 200 C
Author(s) Daniel Nikolai, Eric M. Taleff
On-Site Speaker (Planned) Daniel Nikolai
Abstract Scope The tear resistance of AA7075-T6 sheet material was measured at 25 and 200 C to better understand rupture limited deformation. AA7075-T6 has very limited ductility at room temperature but exhibits increased ductility at 200 C, for which the stamping of a complex geometry was demonstrated. Tear energies were measured for displacement rates that ranged from 2 mm/min up to 1024 mm/min for tests at 200 C. Tear propagation energies increased by a factor of ten from 25 to 200 C. Tear propagation energies at 200 C decreased exponentially with increasing displacement rate. The direction of tearing influenced tear resistance, with the greater tear resistance along the transverse to the sheet rolling direction. Increased tear resistance at 200 C is associated with a reduction in flow stress and increased ductility that transitions tearing from shearing fracture at 25 C to ductile tearing with significant neck development at 200 C.
Proceedings Inclusion? Planned:
Keywords Aluminum,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Accelerating Understanding of Fatigue of Metals
Automotive Unobtanium: Material Challenges for the Future of Transportation
Capturing the Full Range
Contributions of R. F. Mehl (Carnegie-Mellon University; 1932-76) to Metal Fatigue
Hold Time Low Cycle Fatigue of Ni-base Single-crystal Superalloys
Redefining Liquid Metal Embrittlement: Utilizing Machine Learning to Unravel a Liquid Metal Enigma
Reducing Uncertainty: Reflections on Establishing Life Limits
Strain Localization and Very High Cycle Fatigue
Tear Resistance of AA7075-T6 Sheet at Room Temperature and 200 C
The Elevated Temperature High Cycle Fatigue Behavior of an Additively Manufactured Al-Ce-Ni-Mn Alloy
Understanding Fatigue Damage of Metallic Materials in 4D: Probing Microstructural Evolution in Real-time
Very High Cycle Fatigue (VHCF) Phenomena – Influence of Microstructure on Crack Growth in the Near-threshold Regime Investigated by Means of Ultrasonic Fatigue Testing

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