Cavity Damage Accumulation in Alumina Doped with Zirconia or Magnesia

K. Hiraga, K. Nakano, Tohru Suzuki, Y. Sakka

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

For an initial grain size of 1. 0 μm, the accumulation of damage volume in a ZrO2-dispersed alumina is shown to proceed more slowly than that in a MgO-doped alumina under a given loading condition, irrespective of higher tensile flow stress in the former than in the latter. The slower damage accumulation in the ZrO2-dispersed alumina is caused from the slower formation snd growth of cavities larger than the initial grain size/ Such slower cavitation is also shown to delay the onset of microcracking. The delayed microcracking leads to higher tensile ductility in the ZrO2-doped material than in the MgO-doped one.

Original languageEnglish
Pages (from-to)431-436
Number of pages6
JournalMaterials Science Forum
Volume304-306
Publication statusPublished - 1999 Dec 1
Externally publishedYes

Fingerprint

Magnesium Oxide
Aluminum Oxide
Magnesia
zirconium oxides
Zirconia
Microcracking
Alumina
aluminum oxides
damage
cavities
grain size
cavitation flow
ductility
Plastic flow
Cavitation
Ductility
zirconium oxide

Keywords

  • Cavity formation and growth
  • Microcrack
  • Particle dispersion
  • Tensile ductility

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Cavity Damage Accumulation in Alumina Doped with Zirconia or Magnesia. / Hiraga, K.; Nakano, K.; Suzuki, Tohru; Sakka, Y.

In: Materials Science Forum, Vol. 304-306, 01.12.1999, p. 431-436.

Research output: Contribution to journalArticle

Hiraga, K, Nakano, K, Suzuki, T & Sakka, Y 1999, 'Cavity Damage Accumulation in Alumina Doped with Zirconia or Magnesia', Materials Science Forum, vol. 304-306, pp. 431-436.
Hiraga, K. ; Nakano, K. ; Suzuki, Tohru ; Sakka, Y. / Cavity Damage Accumulation in Alumina Doped with Zirconia or Magnesia. In: Materials Science Forum. 1999 ; Vol. 304-306. pp. 431-436.
@article{289da2c33b5640548bca901f20e0a503,
title = "Cavity Damage Accumulation in Alumina Doped with Zirconia or Magnesia",
abstract = "For an initial grain size of 1. 0 μm, the accumulation of damage volume in a ZrO2-dispersed alumina is shown to proceed more slowly than that in a MgO-doped alumina under a given loading condition, irrespective of higher tensile flow stress in the former than in the latter. The slower damage accumulation in the ZrO2-dispersed alumina is caused from the slower formation snd growth of cavities larger than the initial grain size/ Such slower cavitation is also shown to delay the onset of microcracking. The delayed microcracking leads to higher tensile ductility in the ZrO2-doped material than in the MgO-doped one.",
keywords = "Cavity formation and growth, Microcrack, Particle dispersion, Tensile ductility",
author = "K. Hiraga and K. Nakano and Tohru Suzuki and Y. Sakka",
year = "1999",
month = "12",
day = "1",
language = "English",
volume = "304-306",
pages = "431--436",
journal = "Materials Science Forum",
issn = "0255-5476",
publisher = "Trans Tech Publications",

}

TY - JOUR

T1 - Cavity Damage Accumulation in Alumina Doped with Zirconia or Magnesia

AU - Hiraga, K.

AU - Nakano, K.

AU - Suzuki, Tohru

AU - Sakka, Y.

PY - 1999/12/1

Y1 - 1999/12/1

N2 - For an initial grain size of 1. 0 μm, the accumulation of damage volume in a ZrO2-dispersed alumina is shown to proceed more slowly than that in a MgO-doped alumina under a given loading condition, irrespective of higher tensile flow stress in the former than in the latter. The slower damage accumulation in the ZrO2-dispersed alumina is caused from the slower formation snd growth of cavities larger than the initial grain size/ Such slower cavitation is also shown to delay the onset of microcracking. The delayed microcracking leads to higher tensile ductility in the ZrO2-doped material than in the MgO-doped one.

AB - For an initial grain size of 1. 0 μm, the accumulation of damage volume in a ZrO2-dispersed alumina is shown to proceed more slowly than that in a MgO-doped alumina under a given loading condition, irrespective of higher tensile flow stress in the former than in the latter. The slower damage accumulation in the ZrO2-dispersed alumina is caused from the slower formation snd growth of cavities larger than the initial grain size/ Such slower cavitation is also shown to delay the onset of microcracking. The delayed microcracking leads to higher tensile ductility in the ZrO2-doped material than in the MgO-doped one.

KW - Cavity formation and growth

KW - Microcrack

KW - Particle dispersion

KW - Tensile ductility

UR - http://www.scopus.com/inward/record.url?scp=0000119094&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000119094&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0000119094

VL - 304-306

SP - 431

EP - 436

JO - Materials Science Forum

JF - Materials Science Forum

SN - 0255-5476

ER -