Effect of Antiphase Domain Boundaries on Prism Slip in Ti3Al Single Crystals

Yuichiro Koizumi; Y. Minamino; N. Tsuji; T. Nakano; Y. Umakoshi

Effect of Antiphase Domain Boundaries on Prism Slip in Ti₃Al Single Crystals

Yuichiro Koizumi, Y. Minamino, N. Tsuji, T. Nakano, Y. Umakoshi

Materials Processing and Characterization Division

Research output: Contribution to journal › Conference article › peer-review

16 Citations (Scopus)

Abstract

Effect of antiphase domain boundaries (APDBs) on yielding and dislocation structure were investigated in Ti₃Al single crystals oriented for prism slip. The yield stress greatly depended on the size of antiphase domains (APDs). The yield stress of Ti₃Al with the average APD size of 35nm was about six times higher than that of Ti₃Al without APDB. Single dislocations (isolated superpartial dislocations) were observed in the deformed Ti₃Al single crystal with APD sizes smaller than 100nm, while superdislocation pairs were observed in those with larger APDs. The mechanism of the interaction between the prism dislocations and APDBs is discussed.

Original language	English
Pages (from-to)	267-272
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	753
Publication status	Published - 2003 Nov 11
Event	Defect Properties and Related Phenomena in Intermetallic Alloys - Boston, MA, United States Duration: 2002 Dec 3 → 2002 Dec 5

ASJC Scopus subject areas

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

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abstract = "Effect of antiphase domain boundaries (APDBs) on yielding and dislocation structure were investigated in Ti3Al single crystals oriented for prism slip. The yield stress greatly depended on the size of antiphase domains (APDs). The yield stress of Ti3Al with the average APD size of 35nm was about six times higher than that of Ti3Al without APDB. Single dislocations (isolated superpartial dislocations) were observed in the deformed Ti3Al single crystal with APD sizes smaller than 100nm, while superdislocation pairs were observed in those with larger APDs. The mechanism of the interaction between the prism dislocations and APDBs is discussed.",

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T1 - Effect of Antiphase Domain Boundaries on Prism Slip in Ti3Al Single Crystals

AU - Koizumi, Yuichiro

AU - Minamino, Y.

AU - Tsuji, N.

AU - Nakano, T.

AU - Umakoshi, Y.

PY - 2003/11/11

Y1 - 2003/11/11

N2 - Effect of antiphase domain boundaries (APDBs) on yielding and dislocation structure were investigated in Ti3Al single crystals oriented for prism slip. The yield stress greatly depended on the size of antiphase domains (APDs). The yield stress of Ti3Al with the average APD size of 35nm was about six times higher than that of Ti3Al without APDB. Single dislocations (isolated superpartial dislocations) were observed in the deformed Ti3Al single crystal with APD sizes smaller than 100nm, while superdislocation pairs were observed in those with larger APDs. The mechanism of the interaction between the prism dislocations and APDBs is discussed.

AB - Effect of antiphase domain boundaries (APDBs) on yielding and dislocation structure were investigated in Ti3Al single crystals oriented for prism slip. The yield stress greatly depended on the size of antiphase domains (APDs). The yield stress of Ti3Al with the average APD size of 35nm was about six times higher than that of Ti3Al without APDB. Single dislocations (isolated superpartial dislocations) were observed in the deformed Ti3Al single crystal with APD sizes smaller than 100nm, while superdislocation pairs were observed in those with larger APDs. The mechanism of the interaction between the prism dislocations and APDBs is discussed.

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M3 - Conference article

AN - SCOPUS:0242336588

VL - 753

SP - 267

EP - 272

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

SN - 0272-9172

T2 - Defect Properties and Related Phenomena in Intermetallic Alloys

Y2 - 3 December 2002 through 5 December 2002

ER -

Effect of Antiphase Domain Boundaries on Prism Slip in Ti3Al Single Crystals

Abstract

ASJC Scopus subject areas

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Effect of Antiphase Domain Boundaries on Prism Slip in Ti₃Al Single Crystals