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Studies on texture and microstructure of cryorolled and annealed Cu-5%Al, Cu-5%Zn alloys
Published in
2008
Volume: 201
   
Pages: 529 - 536
Abstract
In the present work, we report the crystallographic texture, microstructure and elastic modulus in Cu-5 wt. % Al and Cu-5 wt. % Zn alloys after cryorolling (true strain of ε ∼ 2) and annealing. Texture was studied using X-ray diffraction and electron back scatter diffraction in the scanning electron microscope. Cu-AI and Cu-Zn alloys were found to develop a strong texture after cryorolling and the texture weakens considerably following annealing in the range of 250-300°C. ln-situ Young's modulus (E) measurements (using resonance technique) at temperatures from 25-300°C revealed that E is lowest in both the alloys (108-112 GPa) in the as-rolled condition and recovers to the isotropic value (128 GPa) after heating to 250-300°C. This could be correlated to the rolling and annealing textures in both the alloys. After annealing at 250°C for 15 min, a recrystallized ultra fine grained microstructure with an average grain size in the range of 0.5-1μm with very fine twins was obtained in both the alloys. The grain boundary character distribution revealed significant fraction of CSL boundaries in both the alloys.
About the journal
JournalCeramic Transactions
ISSN10421122
Open AccessNo
Concepts (28)
  •  related image
    Alloys
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    Annealing
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    Cerium alloys
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    Copper
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    Crystal growth
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    Diffraction
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    Elastic moduli
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    Films
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    Grain boundaries
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    Grain size and shape
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    Metallic compounds
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    Microstructure
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    Scanning electron microscopy
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    Textures
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    Zinc
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    Zinc alloys
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    Annealing textures
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    Average grain sizes
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    Crystallographic textures
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    ELECTRON BACK SCATTER DIFFRACTIONS
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    Grain boundary character distributions
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    ISOTROPIC VALUES
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    RESONANCE TECHNIQUES
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    SCANNING ELECTRON MICROSCOPES
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    TRUE STRAINS
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    X-ray diffractions
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    Young's modulus
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    Copper alloys