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The effect of strain rate on multi-directional forged aluminum: examining the experimental data and modeling results

Khamsepour, P ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1016/j.matchemphys.2019.122022
  3. Publisher: Elsevier Ltd , 2020
  4. Abstract:
  5. In this study, multi-directional forging (MDF) as a severe plastic deformation method, annealing, and compression test at different strain rates are applied on pure aluminum. One of the main observations is when the number of MDF passes is increased, the hardness is risen. The most noticeable reduction in hardness occurs when the MDFed samples are annealed at 350 and 450 °C. Moreover, increasing the number of MDF passes and the strain rate of the compression test cause the increase in the yield stress of the samples. If the MDFed samples are non-annealed or if they are annealed at a maximum temperature of 250 °C, the effect of an increase in the number of passes on the yield stress is more significant. The most noticeable increase in yield stress for a specific sample resulting from an increase in the strain rate is when the strain rate reaches 0.01 1/s. Moreover, as the number of passes is increased, the effect of strain rate on yield stress becomes more significant. © 2019 Elsevier B.V
  6. Keywords:
  7. Model ; Multi-directional forging ; Aluminum ; Annealing ; Compression testing ; Forging ; Hardness ; Models ; Yield stress ; Effect of strain ; Forged aluminum ; Maximum temperature ; Model results ; Multidirectional forging ; Pure aluminum ; Severe plastic deformations ; Strain rate
  8. Source: Materials Chemistry and Physics ; Volume 239 , 1 January , 2020
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0254058419308193