Transmission Electron Microscopy Observations of Dislocations and Twins in Polycrystalline Zirconium

L. T. Miyada‐Naborikawa; René De Batist; P. Delavignette

doi:10.1002/pssa.2210890213

Transmission Electron Microscopy Observations of Dislocations and Twins in Polycrystalline Zirconium

L. T. Miyada‐Naborikawa
, René De Batist
, P. Delavignette

Research output › peer-review

Abstract

The microstructural characteristics of polycrystalline pure zirconium are studied by means of transmission electron microscopy (TEM), following several thermo‐mechanical treatments and internal friction measurements. Dislocations with Burgers vectors (a/3) 〈1120〉 arranged in tilt or twist boundary configurations are observed in annealed specimens and following prestraining at room temperature. This type of microstructure is also found following elongations not exceeding 6% at 8 K, whereas larger amounts of deformation (up to 17%) cause heavily twinned structures. Analysis of those twins reveals the presence of primarily the {1012} type and also of the {1012} type. Moreover, other twinning modes, not usually observed in zirconium, are also detected in specimens cold rolled at room temperature.

Original language	English
Pages (from-to)	521-531
Number of pages	11
Journal	physica status solidi (a)
Volume	89
Issue number	2
DOIs	https://doi.org/10.1002/pssa.2210890213
State	Published - 16 Jun 1985

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1002/pssa.2210890213

Cite this

@article{6b100d561e4d46aa9a0c2388941c5b43,

title = "Transmission Electron Microscopy Observations of Dislocations and Twins in Polycrystalline Zirconium",

abstract = "The microstructural characteristics of polycrystalline pure zirconium are studied by means of transmission electron microscopy (TEM), following several thermo‐mechanical treatments and internal friction measurements. Dislocations with Burgers vectors (a/3) 〈1120〉 arranged in tilt or twist boundary configurations are observed in annealed specimens and following prestraining at room temperature. This type of microstructure is also found following elongations not exceeding 6\% at 8 K, whereas larger amounts of deformation (up to 17\%) cause heavily twinned structures. Analysis of those twins reveals the presence of primarily the \{1012\} type and also of the \{1012\} type. Moreover, other twinning modes, not usually observed in zirconium, are also detected in specimens cold rolled at room temperature.",

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AU - De Batist, René

AU - Delavignette, P.

PY - 1985/6/16

Y1 - 1985/6/16

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AB - The microstructural characteristics of polycrystalline pure zirconium are studied by means of transmission electron microscopy (TEM), following several thermo‐mechanical treatments and internal friction measurements. Dislocations with Burgers vectors (a/3) 〈1120〉 arranged in tilt or twist boundary configurations are observed in annealed specimens and following prestraining at room temperature. This type of microstructure is also found following elongations not exceeding 6% at 8 K, whereas larger amounts of deformation (up to 17%) cause heavily twinned structures. Analysis of those twins reveals the presence of primarily the {1012} type and also of the {1012} type. Moreover, other twinning modes, not usually observed in zirconium, are also detected in specimens cold rolled at room temperature.

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