Dislocation‐Induced Softening of MgO·2.9Al2O3 Single Crystals

Hisayuki Suematsu; Tetsuya Suzuki; Takayoshi Iseki; Tsutomu Mori

doi:10.1111/j.1151-2916.1989.tb06120.x

Dislocation‐Induced Softening of MgO·2.9Al₂O₃ Single Crystals

Hisayuki Suematsu, Tetsuya Suzuki, Takayoshi Iseki, Tsutomu Mori

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Magnesium aluminate spinel (MgO·2.9Al₂O₃) single crystals were deformed in compression along the [001] direction at temperatures between 1100° and 1500°C. Dislocations introduced by plastic deformation were observed by transmission electron microscopy. These dislocations lead to plasticity at a temperature where undeformed spinel has no ductility. Further, room‐temperature Vickers hardness decreases after plastic deformation at 1500°C.

Original language	English
Pages (from-to)	306-308
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	72
Issue number	2
DOIs	https://doi.org/10.1111/j.1151-2916.1989.tb06120.x
Publication status	Published - 1989 Feb
Externally published	Yes

Keywords

dislocations
plasticity
single crystals
spinels
transmission electron microscopy

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1111/j.1151-2916.1989.tb06120.x

Cite this

@article{193126c48d3e4d1380c983f2b6cbfe1d,

title = "Dislocation‐Induced Softening of MgO·2.9Al2O3 Single Crystals",

abstract = "Magnesium aluminate spinel (MgO·2.9Al2O3) single crystals were deformed in compression along the [001] direction at temperatures between 1100° and 1500°C. Dislocations introduced by plastic deformation were observed by transmission electron microscopy. These dislocations lead to plasticity at a temperature where undeformed spinel has no ductility. Further, room‐temperature Vickers hardness decreases after plastic deformation at 1500°C.",

keywords = "dislocations, plasticity, single crystals, spinels, transmission electron microscopy",

author = "Hisayuki Suematsu and Tetsuya Suzuki and Takayoshi Iseki and Tsutomu Mori",

year = "1989",

month = feb,

doi = "10.1111/j.1151-2916.1989.tb06120.x",

language = "English",

volume = "72",

pages = "306--308",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

number = "2",

}

TY - JOUR

T1 - Dislocation‐Induced Softening of MgO·2.9Al2O3 Single Crystals

AU - Suematsu, Hisayuki

AU - Suzuki, Tetsuya

AU - Iseki, Takayoshi

AU - Mori, Tsutomu

PY - 1989/2

Y1 - 1989/2

N2 - Magnesium aluminate spinel (MgO·2.9Al2O3) single crystals were deformed in compression along the [001] direction at temperatures between 1100° and 1500°C. Dislocations introduced by plastic deformation were observed by transmission electron microscopy. These dislocations lead to plasticity at a temperature where undeformed spinel has no ductility. Further, room‐temperature Vickers hardness decreases after plastic deformation at 1500°C.

AB - Magnesium aluminate spinel (MgO·2.9Al2O3) single crystals were deformed in compression along the [001] direction at temperatures between 1100° and 1500°C. Dislocations introduced by plastic deformation were observed by transmission electron microscopy. These dislocations lead to plasticity at a temperature where undeformed spinel has no ductility. Further, room‐temperature Vickers hardness decreases after plastic deformation at 1500°C.

KW - dislocations

KW - plasticity

KW - single crystals

KW - spinels

KW - transmission electron microscopy

UR - http://www.scopus.com/inward/record.url?scp=0024611384&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024611384&partnerID=8YFLogxK

U2 - 10.1111/j.1151-2916.1989.tb06120.x

DO - 10.1111/j.1151-2916.1989.tb06120.x

M3 - Article

AN - SCOPUS:0024611384

SN - 0002-7820

VL - 72

SP - 306

EP - 308

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 2

ER -