| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 828166 | Materials & Design | 2016 | 10 Pages |
•We examine changes of the anelastic strain by different loading conditions.•We model the anelastic curves by the simplified equation based on viscoelasticity.•Anelastic strain fluctuates as the loading strain rate increases.•The anelastic strain of crystal plane is related to the crystal index.•An anisotropy in recovery behavior concerning lattice plane is discovered.
The time-dependent springback and anelastic behavior of AC170PX aluminum alloy were investigated as a function of time, prescribed strains and loading strain rates by uniaxial tensile tests. In order to quantify the effect and infer its basis, the X-ray diffraction tests for the lattice-strain recovery were conducted. The measured anelastic strain accumulated in 10 h increased, as the prescribed strain went up. A non-monotonic behavior, showing a maximum anelastic recoverable strain at an intermediate strain rate followed by onset of a decreasing trend, is observed. The XRD results show the changes of different interplanar spacings in the time-dependent response do not follow the elastic law. There exists an anisotropy in recovery behavior with respect to lattice plane.
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