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Experimental Mechanics

Erschienen in:

01.06.2012

Nucleation and Growth Behavior of Twin Region Around Yield Point of Polycrystalline Pure Ti

verfasst von: G. Murasawa, T. Morimoto, S. Yoneyama

Erschienen in: Experimental Mechanics | Ausgabe 5/2012

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Abstract

The aim of the present study is to investigate the nucleation and growth behavior of twin region around yield point of polycrystalline pure Ti under deformation. Firstly, we prepare commercial polycrystalline pure Ti plate, and investigate the microstructure and pole figures using an Electron Backscatter Diffraction Patterns device. Secondly, tensile specimens are cut out from 0°, 30°, 45° and 90° relative to plate rolling direction. Then, we measure the macroscopic stress–strain curve, local strain distribution and nucleation and growth of twin region arising in specimens under uniaxial tensile loading. Results show the anisotropic characteristics in those behaviors. Those could be related to c axis in hcp lattice. However, detailed anisotropic mechanism may have something to do with several interactions between slips and twins arising in its body. It is also understood that the avalanche behavior of twin region nucleation occurs as a result of larger twin region formation, with inhomogeneous small twin region nucleation in transient process. Finally, we could suppose the bridge mechanism of deformation behaviors from macroscale to microscale for polycrystalline pure Ti under deformation.

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Titel: Nucleation and Growth Behavior of Twin Region Around Yield Point of Polycrystalline Pure Ti
verfasst von: G. Murasawa
T. Morimoto
S. Yoneyama
Publikationsdatum: 01.06.2012
Verlag: Springer US
Erschienen in: Experimental Mechanics / Ausgabe 5/2012
Print ISSN: 0014-4851
Elektronische ISSN: 1741-2765
DOI: https://doi.org/10.1007/s11340-011-9508-x

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