An investigation of the phase diagram of the Al-Ir binary system

Machiko Ode; Taichi Abe; Hideyuki Murakami; Yoko Yamabe-Mitarai; Toru Hara; Kosuke Nagashio; Cenk Kocer; Hidehiro Onodera

doi:10.1016/j.intermet.2008.06.020

An investigation of the phase diagram of the Al-Ir binary system

Machiko Ode^*, Taichi Abe, Hideyuki Murakami, Yoko Yamabe-Mitarai, Toru Hara, Kosuke Nagashio, Cenk Kocer, Hidehiro Onodera

^*Corresponding author for this work

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

17 Citations (Scopus)

Abstract

Al-rich portion of the Ir-Al phase diagram has been investigated with 10 alloys by means of differential thermal analysis, X-ray diffraction, scanning electron microscopy, inductivity coupled plasma spectrometry and electron probe microanalysis. Invariant reactions are observed: L ↔ AlIr + Al_2.7Ir, L + Al_2.7Ir ↔ Al₃Ir, L + Al₃Ir ↔ Al₁₃Ir₄, L + Al₁₃Ir₄ ↔ Al₉Ir₂. Although the eutectic reaction, L ↔ AlIr + Al_2.7Ir, cannot be regarded as definitely established by previous research, it is confirmed in the present research. Liquidus curve has been determined for the first time for Al-rich alloy (Ir ≤ 33.0 at%). The Ir-Al binary phase diagram has been modified based on these experimental observations.

Original language	English
Pages (from-to)	1171-1178
Number of pages	8
Journal	Intermetallics
Volume	16
Issue number	10
DOIs	https://doi.org/10.1016/j.intermet.2008.06.020
Publication status	Published - 2008 Oct 1
Externally published	Yes

Keywords

A. Aluminides, miscellaneous
B. Phase diagrams
B. Phase identification
D. Microstructure
F. Calorimetry

ASJC Scopus subject areas

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.intermet.2008.06.020

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title = "An investigation of the phase diagram of the Al-Ir binary system",

abstract = "Al-rich portion of the Ir-Al phase diagram has been investigated with 10 alloys by means of differential thermal analysis, X-ray diffraction, scanning electron microscopy, inductivity coupled plasma spectrometry and electron probe microanalysis. Invariant reactions are observed: L ↔ AlIr + Al2.7Ir, L + Al2.7Ir ↔ Al3Ir, L + Al3Ir ↔ Al13Ir4, L + Al13Ir4 ↔ Al9Ir2. Although the eutectic reaction, L ↔ AlIr + Al2.7Ir, cannot be regarded as definitely established by previous research, it is confirmed in the present research. Liquidus curve has been determined for the first time for Al-rich alloy (Ir ≤ 33.0 at%). The Ir-Al binary phase diagram has been modified based on these experimental observations.",

keywords = "A. Aluminides, miscellaneous, B. Phase diagrams, B. Phase identification, D. Microstructure, F. Calorimetry",

author = "Machiko Ode and Taichi Abe and Hideyuki Murakami and Yoko Yamabe-Mitarai and Toru Hara and Kosuke Nagashio and Cenk Kocer and Hidehiro Onodera",

year = "2008",

month = oct,

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doi = "10.1016/j.intermet.2008.06.020",

language = "English",

volume = "16",

pages = "1171--1178",

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T1 - An investigation of the phase diagram of the Al-Ir binary system

AU - Ode, Machiko

AU - Abe, Taichi

AU - Murakami, Hideyuki

AU - Yamabe-Mitarai, Yoko

AU - Hara, Toru

AU - Nagashio, Kosuke

AU - Kocer, Cenk

AU - Onodera, Hidehiro

PY - 2008/10/1

Y1 - 2008/10/1

N2 - Al-rich portion of the Ir-Al phase diagram has been investigated with 10 alloys by means of differential thermal analysis, X-ray diffraction, scanning electron microscopy, inductivity coupled plasma spectrometry and electron probe microanalysis. Invariant reactions are observed: L ↔ AlIr + Al2.7Ir, L + Al2.7Ir ↔ Al3Ir, L + Al3Ir ↔ Al13Ir4, L + Al13Ir4 ↔ Al9Ir2. Although the eutectic reaction, L ↔ AlIr + Al2.7Ir, cannot be regarded as definitely established by previous research, it is confirmed in the present research. Liquidus curve has been determined for the first time for Al-rich alloy (Ir ≤ 33.0 at%). The Ir-Al binary phase diagram has been modified based on these experimental observations.

AB - Al-rich portion of the Ir-Al phase diagram has been investigated with 10 alloys by means of differential thermal analysis, X-ray diffraction, scanning electron microscopy, inductivity coupled plasma spectrometry and electron probe microanalysis. Invariant reactions are observed: L ↔ AlIr + Al2.7Ir, L + Al2.7Ir ↔ Al3Ir, L + Al3Ir ↔ Al13Ir4, L + Al13Ir4 ↔ Al9Ir2. Although the eutectic reaction, L ↔ AlIr + Al2.7Ir, cannot be regarded as definitely established by previous research, it is confirmed in the present research. Liquidus curve has been determined for the first time for Al-rich alloy (Ir ≤ 33.0 at%). The Ir-Al binary phase diagram has been modified based on these experimental observations.

KW - A. Aluminides, miscellaneous

KW - B. Phase diagrams

KW - B. Phase identification

KW - D. Microstructure

KW - F. Calorimetry

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U2 - 10.1016/j.intermet.2008.06.020

DO - 10.1016/j.intermet.2008.06.020

M3 - Article

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SN - 0966-9795

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SP - 1171

EP - 1178

JO - Intermetallics

JF - Intermetallics

IS - 10

ER -

An investigation of the phase diagram of the Al-Ir binary system

Abstract

Keywords

ASJC Scopus subject areas

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