Effect of chemical composition on the microstructure and hardness of Al-Cu-Fe alloy

M. A. Suárez; R. Esquivel; J. Alcántara; H. Dorantes; J. F. Chávez

doi:10.1016/j.matchar.2011.06.009

Effect of chemical composition on the microstructure and hardness of Al-Cu-Fe alloy

M. A. Suárez, R. Esquivel, J. Alcántara, H. Dorantes, J. F. Chávez

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

14 Scopus citations

Abstract

Four Al-Cu-Fe alloys with compositions; a) Al₆₅Cu ₂₀Fe₁₅, b) Al₆₄Cu_22.5Fe _13.5, c) Al₆₁Cu₂₆Fe₁₃ and d) Al ₆₂Cu_25.5Fe_12.5, where the icosahedral phase is present, have been experimentally studied in both as-cast and annealed conditions in order to investigate the effect of chemical composition on the percentage of icosahedral phase and the changes in hardness of the alloy and each phase. It was found that the a) Al₆₅Cu₂₀Fe ₁₅ and b) Al₆₄Cu_22.5Fe_13.5 alloys, which present the highest Fe content, showed the largest amount of λ-Al₁₃Fe₄ phase as well as the highest hardness in all phases. In contrast, the same alloys developed the lowest amount of icosahedral phase after heat treatment. The c) Al₆₁Cu ₂₆Fe₁₃ and d) Al₆₂Cu_25.5Fe _12.5 alloys had a better response to heat treatment, reaching amounts of icosahedral phase up to 87% and 99% respectively. The hardness of phases after heat treatment increased with respect to alloys in as- cast condition, the hardness of icosahedral phase increased between 20% and 25%, while the hardness of λ-Al₁₃Fe₄ phase increased 9%. The icosahedral phase of annealed a) Al₆₅Cu₂₀Fe₁₅ alloy was the toughest with a hardness value of 844HV.

Original language	English
Pages (from-to)	917-923
Number of pages	7
Journal	Materials Characterization
Volume	62
Issue number	9
DOIs	https://doi.org/10.1016/j.matchar.2011.06.009
State	Published - Sep 2011
Externally published	Yes

Keywords

Aluminium alloys
Characterization
Hardness
Microstructures
Quasicrystals

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10.1016/j.matchar.2011.06.009

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title = "Effect of chemical composition on the microstructure and hardness of Al-Cu-Fe alloy",

abstract = "Four Al-Cu-Fe alloys with compositions; a) Al65Cu 20Fe15, b) Al64Cu22.5Fe 13.5, c) Al61Cu26Fe13 and d) Al 62Cu25.5Fe12.5, where the icosahedral phase is present, have been experimentally studied in both as-cast and annealed conditions in order to investigate the effect of chemical composition on the percentage of icosahedral phase and the changes in hardness of the alloy and each phase. It was found that the a) Al65Cu20Fe 15 and b) Al64Cu22.5Fe13.5 alloys, which present the highest Fe content, showed the largest amount of λ-Al13Fe4 phase as well as the highest hardness in all phases. In contrast, the same alloys developed the lowest amount of icosahedral phase after heat treatment. The c) Al61Cu 26Fe13 and d) Al62Cu25.5Fe 12.5 alloys had a better response to heat treatment, reaching amounts of icosahedral phase up to 87% and 99% respectively. The hardness of phases after heat treatment increased with respect to alloys in as- cast condition, the hardness of icosahedral phase increased between 20% and 25%, while the hardness of λ-Al13Fe4 phase increased 9%. The icosahedral phase of annealed a) Al65Cu20Fe15 alloy was the toughest with a hardness value of 844HV.",

keywords = "Aluminium alloys, Characterization, Hardness, Microstructures, Quasicrystals",

author = "Su{\'a}rez, {M. A.} and R. Esquivel and J. Alc{\'a}ntara and H. Dorantes and Ch{\'a}vez, {J. F.}",

note = "Funding Information: The authors acknowledge the financial support from Consejo Nacional de Ciencia y Tecnolog{\'i}a (CONACYT) and the SIP-IPN .",

year = "2011",

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T1 - Effect of chemical composition on the microstructure and hardness of Al-Cu-Fe alloy

AU - Suárez, M. A.

AU - Esquivel, R.

AU - Alcántara, J.

AU - Dorantes, H.

AU - Chávez, J. F.

N1 - Funding Information: The authors acknowledge the financial support from Consejo Nacional de Ciencia y Tecnología (CONACYT) and the SIP-IPN .

PY - 2011/9

Y1 - 2011/9

N2 - Four Al-Cu-Fe alloys with compositions; a) Al65Cu 20Fe15, b) Al64Cu22.5Fe 13.5, c) Al61Cu26Fe13 and d) Al 62Cu25.5Fe12.5, where the icosahedral phase is present, have been experimentally studied in both as-cast and annealed conditions in order to investigate the effect of chemical composition on the percentage of icosahedral phase and the changes in hardness of the alloy and each phase. It was found that the a) Al65Cu20Fe 15 and b) Al64Cu22.5Fe13.5 alloys, which present the highest Fe content, showed the largest amount of λ-Al13Fe4 phase as well as the highest hardness in all phases. In contrast, the same alloys developed the lowest amount of icosahedral phase after heat treatment. The c) Al61Cu 26Fe13 and d) Al62Cu25.5Fe 12.5 alloys had a better response to heat treatment, reaching amounts of icosahedral phase up to 87% and 99% respectively. The hardness of phases after heat treatment increased with respect to alloys in as- cast condition, the hardness of icosahedral phase increased between 20% and 25%, while the hardness of λ-Al13Fe4 phase increased 9%. The icosahedral phase of annealed a) Al65Cu20Fe15 alloy was the toughest with a hardness value of 844HV.

AB - Four Al-Cu-Fe alloys with compositions; a) Al65Cu 20Fe15, b) Al64Cu22.5Fe 13.5, c) Al61Cu26Fe13 and d) Al 62Cu25.5Fe12.5, where the icosahedral phase is present, have been experimentally studied in both as-cast and annealed conditions in order to investigate the effect of chemical composition on the percentage of icosahedral phase and the changes in hardness of the alloy and each phase. It was found that the a) Al65Cu20Fe 15 and b) Al64Cu22.5Fe13.5 alloys, which present the highest Fe content, showed the largest amount of λ-Al13Fe4 phase as well as the highest hardness in all phases. In contrast, the same alloys developed the lowest amount of icosahedral phase after heat treatment. The c) Al61Cu 26Fe13 and d) Al62Cu25.5Fe 12.5 alloys had a better response to heat treatment, reaching amounts of icosahedral phase up to 87% and 99% respectively. The hardness of phases after heat treatment increased with respect to alloys in as- cast condition, the hardness of icosahedral phase increased between 20% and 25%, while the hardness of λ-Al13Fe4 phase increased 9%. The icosahedral phase of annealed a) Al65Cu20Fe15 alloy was the toughest with a hardness value of 844HV.

KW - Aluminium alloys

KW - Characterization

KW - Hardness

KW - Microstructures

KW - Quasicrystals

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DO - 10.1016/j.matchar.2011.06.009

M3 - Artículo

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SP - 917

EP - 923

JO - Materials Characterization

JF - Materials Characterization

IS - 9

ER -

Effect of chemical composition on the microstructure and hardness of Al-Cu-Fe alloy

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Keywords

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