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Most Downloaded Scripta Materialia Articles

The most downloaded articles from SciVerse ScienceDirect in the last 90 days.

10. A semi-phenomenological constitutive model for hcp materials as exemplified by alpha titanium

July 2012
Dong-Hyun Ahn | Hyoung Seop Kim | Yuri Estrin

A constitutive model based on the mechanisms of dislocation glide and deformation twinning for hexagonal close-packed (hcp) metals is proposed. To account for the limited availability of slip systems in an hcp metal, an incompatibility stress, which evolves with strain, is included. Numerical simulations compared with experiments suggest that the model can successfully reproduce the strain hardening of α-Ti. It is believed that the model has a more general applicability and can be used for other hcp metals as well.

 

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