Journal ArticleDOI
Study of dynamic grain growth by electron microscopy and EBSD.
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TLDR
Of a particular interest are results related to behaviour of CuAl2 in superplastic Al‐33wt%Cu during deformation, including several problems with the use of EBSD in this alloy.Abstract:
The effect of hot deformation on fully recrystallized aluminium-copper alloys (Al-4wt%Cu and Al-33wt%Cu) with different volume fractions of CuAl(2) has been studied. The alloys are Zener pinned systems with different superplastic properties. Strain-induced grain growth, observed in both alloys, was quantitatively estimated by means of electron microscopy and EBSD and compared with the rate of static grain growth. Surface marker observations and in situ hot-deformation experiments combined with EBSD were aimed at clarifying the mechanisms responsible for the changes in the deformed microstructures. A sequence of secondary and backscattered electron images and EBSD maps was obtained during in situ SEM deformation with different testing conditions. Overlaying EBSD maps for the Al-4wt%Cu with channelling contrast images showed that grain boundary motion occurred during deformation, creating a layered structure and leading to an increase in size of some grains and shrinkage of others. Of a particular interest are results related to behaviour of CuAl(2) in superplastic Al-33wt%Cu during deformation, including several problems with the use of EBSD in this alloy.read more
Citations
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Journal ArticleDOI
The Diffusion of Solids
TL;DR: In view of the interest attaching to the vaporisation and diffusion of solids, the following observations may be worthy of record as discussed by the authors, which may be seen as a good starting point for further research.
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Towards an integrated materials characterization toolbox
Ian M. Robertson,Christopher A. Schuh,J.S. Vetrano,Nigel D. Browning,David P. Field,Dorte Juul Jensen,M. K. Miller,Ian Baker,David C. Dunand,Rafal E. Dunin-Borkowski,Bernd Kabius,Thomas F. Kelly,Sergio Lozano-Perez,Amit Misra,Gregory S. Rohrer,Anthony D. Rollett,Mitra L. Taheri,Greg B. Thompson,Michael D. Uchic,Xun-Li Wang,Gary S. Was +20 more
TL;DR: Bonnell et al. as discussed by the authors present the authors' viewpoint on the material characterization field, reviewing its recent past, evaluating its present capabilities, and proposing directions for its future development, including suggestions for instrumentation advances, scientific problems in microstructure analysis, and complex structure evolution problems involving material damage.
Journal ArticleDOI
Superplasticity in crystalline solids
TL;DR: Superplasticity in crystalline solids was studied in this article, where the authors showed that the superplastic properties of solids can be inferred from the properties of the solids themselves.
Journal ArticleDOI
Grain growth and stabilisation of nanostructured aluminium at high temperatures: review
H. Asgharzadeh,H. J. McQueen +1 more
TL;DR: In this paper, the mechanisms of normal and abnormal grain growth during isothermal annealing are presented, followed by consideration of thermal stabilisation by the addition of solute atoms/impurities and/or dispersion of second phase particles.
Journal ArticleDOI
An EBSD Study of the Deformation of Service-Aged 316 Austenitic Steel
TL;DR: In this article, a simple metric, proportion of undeformed grains, is proposed for assessing strain in both the aged and unaged materials, and good agreement was established between the two techniques of assessing plastic strain in aged 316 steel.
References
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BookDOI
Density estimation for statistics and data analysis
TL;DR: The Kernel Method for Multivariate Data: Three Important Methods and Density Estimation in Action.
Journal ArticleDOI
The Diffusion of Solids
TL;DR: In view of the interest attaching to the vaporisation and diffusion of solids, the following observations may be worthy of record as discussed by the authors, which may be seen as a good starting point for further research.
Journal ArticleDOI
Mechanical behavior of polycrystalline tungsten at elevated temperature
TL;DR: In this article, the influence of stress, temperature, grain size and subgrain size on the steady state creep rate of polycrystalline unalloyed tungsten has been examined based on the extensive published data available.