A study of dislocation transmission through a grain boundary in hcp Ti-6Al using micro-cantilevers

Rengen Ding; Jicheng Gong; Angus Wilkinson; Ian Jones

doi:10.1016/j.actamat.2015.10.023

A study of dislocation transmission through a grain boundary in hcp Ti-6Al using micro-cantilevers

Rengen Ding, Jicheng Gong, Angus Wilkinson, Ian Jones

Metallurgy and Materials

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Abstract

Micro-cantilevers with an equilateral triangular cross-section and an apex at the bottom were machined across grain boundaries in a Ti–6Al alloy sample using a focused ion beam (FIB). A nano-indenter was used to deform the micro-cantilevers. An <a> prism slip system was selectively activated in the upper grain by controlling the crystal orientation along the micro-cantilever. Specimens for transmission electron microscopy (TEM) were prepared from the deformed micro-cantilevers using dual-beam FIB. Bright field scanning transmission electron microscopy was used to investigate the process of slip propagation through the grain boundary.

Original language	English
Pages (from-to)	416-423
Number of pages	8
Journal	Acta Materialia
Volume	103
Early online date	6 Nov 2015
DOIs	https://doi.org/10.1016/j.actamat.2015.10.023
Publication status	Published - 15 Jan 2016

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10.1016/j.actamat.2015.10.023Licence: None: All rights reserved

Effective Structural Unit Size in Polycrystals: Formation, Quantification and micromechanical Behaviour
Jones, I. (Principal Investigator)
Engineering & Physical Science Research Council
1/02/08 → 31/01/11
Project: Research Councils

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title = "A study of dislocation transmission through a grain boundary in hcp Ti-6Al using micro-cantilevers",

abstract = "Micro-cantilevers with an equilateral triangular cross-section and an apex at the bottom were machined across grain boundaries in a Ti–6Al alloy sample using a focused ion beam (FIB). A nano-indenter was used to deform the micro-cantilevers. An prism slip system was selectively activated in the upper grain by controlling the crystal orientation along the micro-cantilever. Specimens for transmission electron microscopy (TEM) were prepared from the deformed micro-cantilevers using dual-beam FIB. Bright field scanning transmission electron microscopy was used to investigate the process of slip propagation through the grain boundary.",

author = "Rengen Ding and Jicheng Gong and Angus Wilkinson and Ian Jones",

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AU - Ding, Rengen

AU - Gong, Jicheng

AU - Wilkinson, Angus

AU - Jones, Ian

PY - 2016/1/15

Y1 - 2016/1/15

N2 - Micro-cantilevers with an equilateral triangular cross-section and an apex at the bottom were machined across grain boundaries in a Ti–6Al alloy sample using a focused ion beam (FIB). A nano-indenter was used to deform the micro-cantilevers. An prism slip system was selectively activated in the upper grain by controlling the crystal orientation along the micro-cantilever. Specimens for transmission electron microscopy (TEM) were prepared from the deformed micro-cantilevers using dual-beam FIB. Bright field scanning transmission electron microscopy was used to investigate the process of slip propagation through the grain boundary.

AB - Micro-cantilevers with an equilateral triangular cross-section and an apex at the bottom were machined across grain boundaries in a Ti–6Al alloy sample using a focused ion beam (FIB). A nano-indenter was used to deform the micro-cantilevers. An prism slip system was selectively activated in the upper grain by controlling the crystal orientation along the micro-cantilever. Specimens for transmission electron microscopy (TEM) were prepared from the deformed micro-cantilevers using dual-beam FIB. Bright field scanning transmission electron microscopy was used to investigate the process of slip propagation through the grain boundary.

U2 - 10.1016/j.actamat.2015.10.023

DO - 10.1016/j.actamat.2015.10.023

M3 - Article

SN - 1359-6454

VL - 103

SP - 416

EP - 423

JO - Acta Materialia

JF - Acta Materialia

ER -

A study of dislocation transmission through a grain boundary in hcp Ti-6Al using micro-cantilevers

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Effective Structural Unit Size in Polycrystals: Formation, Quantification and micromechanical Behaviour

Cite this