Influence of grain size on the tensile response of aluminum under plate-impact loading
- 15 October 2007
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 102 (8), 083513
- https://doi.org/10.1063/1.2798497
Abstract
Plate-impact experiments were performed to examine the influence of grain size on the dynamic tensile (or spall) behavior of shocked polycrystallinealuminum. Ultrapure and commercially pure 1050 aluminum plates were cold rolled to 80% strain and heat treated under predetermined conditions to produce recrystallized samples with average grain sizes varying between 49 and 453 μ m . Well-characterized samples were subjected to plane wave loading at peak compressive stresses of 4 and 21 GPa , and free-surface velocity profiles were obtained using velocity interferometry. At 4 GPa , the observed pullback velocity, a characteristic feature of the spall response, was similar for different grain sizes of 1050 and ultrapure Al, suggesting that the preferential failure mode is intragranular. At 21 GPa , the spall response (i.e., the pullback velocity and the signal structure) depended on the alloy content; the pullback velocity of ultrapure Al increased with increase in grain size, while it remained constant for 1050 Al. In addition, the structure of pullback signals showed a well-defined change in slope for different grain size samples in ultrapure Al, while no such feature was observed for 1050 Al. For the grain sizes examined, the σ HEL was nearly independent of the grain size for 1050 Al and beyond a certain grain size for ultrapure Al.Keywords
This publication has 25 references indexed in Scilit:
- Shock-wave induced tension and spall in a zirconium-based bulk amorphous alloyJournal of Applied Physics, 2007
- Alloying effects on dislocation substructure evolution of aluminum alloysInternational Journal of Plasticity, 2004
- Quantitative analysis of grain subdivision in cold rolled aluminiumActa Materialia, 2001
- Microstructural evolution in a non-cell forming metal: AlMgActa Metallurgica et Materialia, 1993
- Influence of repeated shock loading on the substructure evolution of 99.99 wt.% aluminumMaterials Science and Engineering: A, 1991
- Dynamic failure of solidsPhysics Reports, 1987
- The effect of grain size and strain on the tensile flow stress of quenched aluminumActa Metallurgica, 1987
- Concentration wave approach in structural and thermodynamic characterization of ceramic crystalsProgress in Materials Science, 1985
- Correlation between texture and substructure of conventionally and shock-wave-deformed aluminumMaterials Science and Engineering, 1982
- Laser interferometer for measuring high velocities of any reflecting surfaceJournal of Applied Physics, 1972