TY - JOUR

T1 - Precipitate effects on the mechanical behavior of aluminum copper alloys

T2 - Part II. Modeling

AU - Sehitoglu, H.

AU - Foglesong, T.

AU - Maier, H. J.

N1 - Funding Information: The work is partially sponsored by the Ford Motor Company (Dearborn, MI), the Fracture Control Program, University of Illinois, and the National Science Foundation (Grant No. DMR-0313489). The Frederick Seitz Materials Research Laboratory Facilities, supported by US Dept. of Energy Grant DEF 02-91ER45439, were utilized in ‘texture’ portion of the work. The authors acknowledge discussions with C. Tome on the VPSC code modification.

PY - 2005

Y1 - 2005

N2 - This work focuses on a new hardening formulation accounting for precipitate-induced anisotropy in a binary aluminum-copper precipitation-hardened alloy. Different precipitates were developed upon aging at 190 °C and 260 °C, and corresponding work hardening characteristics were predicted for single and polycrystals. The use of single crystals facilitated the demonstration of the effect of precipitates on the flow anisotropy behavior. Pure aluminum was also studied to highlight the change in deformation mechanisms due to the introduction of precipitates in the matrix. The influence of precipitate-induced anisotropy on single-crystal flow behavior was clearly established, again relating to the precipitate character. Simulations are presented for several single-crystal orientations and polycrystals, and they display good agreement with experiments. The work demonstrates that precipitate-induced anisotropy can dominate over the crystal anisotropy effects in some cases.

AB - This work focuses on a new hardening formulation accounting for precipitate-induced anisotropy in a binary aluminum-copper precipitation-hardened alloy. Different precipitates were developed upon aging at 190 °C and 260 °C, and corresponding work hardening characteristics were predicted for single and polycrystals. The use of single crystals facilitated the demonstration of the effect of precipitates on the flow anisotropy behavior. Pure aluminum was also studied to highlight the change in deformation mechanisms due to the introduction of precipitates in the matrix. The influence of precipitate-induced anisotropy on single-crystal flow behavior was clearly established, again relating to the precipitate character. Simulations are presented for several single-crystal orientations and polycrystals, and they display good agreement with experiments. The work demonstrates that precipitate-induced anisotropy can dominate over the crystal anisotropy effects in some cases.

UR - http://www.scopus.com/inward/record.url?scp=60049098476&partnerID=8YFLogxK

U2 - 10.1007/s11661-005-1007-1

DO - 10.1007/s11661-005-1007-1

M3 - Article

AN - SCOPUS:60049098476

VL - 36

SP - 763

EP - 770

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

SN - 1073-5623

IS - 13

ER -