Header menu link for other important links
X
Influence of Annealing on Microstructural Evolution, Precipitation Sequence, and Fracture Toughness of Cryorolled Al–Cu–Si Alloy
Published in Springer New York LLC
2016
Volume: 5
   
Issue: 6
Pages: 540 - 556
Abstract
Microstructural evolution, precipitation sequence, and fracture toughness of cryorolled Al 2014 alloy subjected to annealing treatment were investigated in the present work. Al 2014 alloy was solutionized (ST) and subjected to cryorolling (CR) up to effective true strain of 2.3. The CR Al 2014 alloy samples were annealed (AN) at temperatures ranging from 100 to 350 °C for the duration of 45 min. TEM and XRD studies of the CR and CR + AN were made to understand its precipitation kinetics. Fracture toughness tests were performed on CR and CR + AN alloy, and its deformation behavior was correlated with microstructural features. The improvement in fracture toughness Kee (23.06–37.8 MPa √m) of CR Al 2014 alloy was observed as compared to ST alloy. The fracture toughness was retained up to 200 °C for CR alloy, but it started decreasing beyond 200 °C. The improvement in fracture toughness of cryorolled Al 2014 alloy at low-temperature annealing from 100 to 200 °C is attributed to the formation of GP zones and metastable phase θ′. However, beyond temperature 200 °C, fracture toughness has reduced due to combined effect of recovery, recrystallization, and formation of stable coarser phase such as θ and λ. © 2016, Springer Science+Business Media New York and ASM International.
About the journal
JournalData powered by TypesetMetallography, Microstructure, and Analysis
PublisherData powered by TypesetSpringer New York LLC
ISSN21929262
Open AccessNo
Concepts (16)
  •  related image
    Aluminum
  •  related image
    Annealing
  •  related image
    Chromium alloys
  •  related image
    Microstructural evolution
  •  related image
    Precipitation (chemical)
  •  related image
    Silicon alloys
  •  related image
    Temperature
  •  related image
    Annealing treatments
  •  related image
    Cryo-rolling
  •  related image
    Deformation behavior
  •  related image
    Fracture toughness tests
  •  related image
    LOW TEMPERATURE ANNEALING
  •  related image
    Microstructural features
  •  related image
    Precipitation kinetics
  •  related image
    PRECIPITATION SEQUENCE
  •  related image
    Fracture toughness