Structural evolution during heat treatment of mechanically alloyed Al-Cu-Fe-(Si) alloys

Ki Buem Kim; Suk Hwan Kim; Won Tae Kim; Do Hyang Kim; Kyung Tae Hong

doi:10.1016/S0921-5093(00)01584-7

Structural evolution during heat treatment of mechanically alloyed Al-Cu-Fe-(Si) alloys

Ki Buem Kim, Suk Hwan Kim, Won Tae Kim, Do Hyang Kim, Kyung Tae Hong

Department of Materials Science and Engineering

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

32 Citations (Scopus)

Abstract

Structural evolution during mechanical alloying and subsequent heat treatment of Al₆₅Cu₂₀Fe₁₅ and Al₆₅Cu₂₀Fe₁₀Si₅ was studied by X-ray diffractometry (XRD), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). The Al₆₅Cu₂₀Fe₁₅ and Al₆₅Cu₂₀Fe₁₀Si₅ powders milled for 10 h showed a layered structure consisting of Al-, Cu- and Fe-rich layers. DSC traces obtained from the powder during heating, up to 600°C, showed two exothermic peaks with peak temperatures of 330 and 440°C in Al₆₅Cu₂₀Fe₁₅ and 330 and 500°C in Al₆₅Cu₂₀Fe₁₀Si₅ powders. The lower exothermic peaks correspond to the formation of Al₂Cu and Al₇Cu₂Fe phases from the layered structure. The second high temperature exotherms correspond to the formation of Al(Fe,Cu) and 1/1 cubic approximant in the Al₆₅Cu₂₀Fe₁₅ powder and to the formation of Al₁₃Fe₄ adn 1/1 cubic approximant in the Al₆₅Cu₂₀Fe₁₀Si₅ powder. The Al₆₅Cu₂₀Fe₁₅ and Al₆₅Cu₂₀Fe₁₀Si₅ powders annealed for 5 h at 750°C showed microstructure consisting of Al(Cu,Fe) and Al₁₃Fe₄ phases, and Al₁₃Fe₄, icosahedral and new approximant phases, respectively. The partial substitution of Fe by Si increased the stability of the 1/1 cubic approximant and icosahedral phases.

Original language	English
Pages (from-to)	822-829
Number of pages	8
Journal	Materials Science and Engineering A
Volume	304-306
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(00)01584-7
Publication status	Published - 2001 May 31

Bibliographical note

Funding Information:
This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and Technology.

All Science Journal Classification (ASJC) codes

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

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10.1016/S0921-5093(00)01584-7

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title = "Structural evolution during heat treatment of mechanically alloyed Al-Cu-Fe-(Si) alloys",

abstract = "Structural evolution during mechanical alloying and subsequent heat treatment of Al65Cu20Fe15 and Al65Cu20Fe10Si5 was studied by X-ray diffractometry (XRD), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). The Al65Cu20Fe15 and Al65Cu20Fe10Si5 powders milled for 10 h showed a layered structure consisting of Al-, Cu- and Fe-rich layers. DSC traces obtained from the powder during heating, up to 600°C, showed two exothermic peaks with peak temperatures of 330 and 440°C in Al65Cu20Fe15 and 330 and 500°C in Al65Cu20Fe10Si5 powders. The lower exothermic peaks correspond to the formation of Al2Cu and Al7Cu2Fe phases from the layered structure. The second high temperature exotherms correspond to the formation of Al(Fe,Cu) and 1/1 cubic approximant in the Al65Cu20Fe15 powder and to the formation of Al13Fe4 adn 1/1 cubic approximant in the Al65Cu20Fe10Si5 powder. The Al65Cu20Fe15 and Al65Cu20Fe10Si5 powders annealed for 5 h at 750°C showed microstructure consisting of Al(Cu,Fe) and Al13Fe4 phases, and Al13Fe4, icosahedral and new approximant phases, respectively. The partial substitution of Fe by Si increased the stability of the 1/1 cubic approximant and icosahedral phases.",

author = "Kim, {Ki Buem} and Kim, {Suk Hwan} and Kim, {Won Tae} and Kim, {Do Hyang} and Hong, {Kyung Tae}",

note = "Funding Information: This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and Technology.",

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doi = "10.1016/S0921-5093(00)01584-7",

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AU - Kim, Ki Buem

AU - Kim, Suk Hwan

AU - Kim, Won Tae

AU - Kim, Do Hyang

AU - Hong, Kyung Tae

N1 - Funding Information: This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and Technology.

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N2 - Structural evolution during mechanical alloying and subsequent heat treatment of Al65Cu20Fe15 and Al65Cu20Fe10Si5 was studied by X-ray diffractometry (XRD), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). The Al65Cu20Fe15 and Al65Cu20Fe10Si5 powders milled for 10 h showed a layered structure consisting of Al-, Cu- and Fe-rich layers. DSC traces obtained from the powder during heating, up to 600°C, showed two exothermic peaks with peak temperatures of 330 and 440°C in Al65Cu20Fe15 and 330 and 500°C in Al65Cu20Fe10Si5 powders. The lower exothermic peaks correspond to the formation of Al2Cu and Al7Cu2Fe phases from the layered structure. The second high temperature exotherms correspond to the formation of Al(Fe,Cu) and 1/1 cubic approximant in the Al65Cu20Fe15 powder and to the formation of Al13Fe4 adn 1/1 cubic approximant in the Al65Cu20Fe10Si5 powder. The Al65Cu20Fe15 and Al65Cu20Fe10Si5 powders annealed for 5 h at 750°C showed microstructure consisting of Al(Cu,Fe) and Al13Fe4 phases, and Al13Fe4, icosahedral and new approximant phases, respectively. The partial substitution of Fe by Si increased the stability of the 1/1 cubic approximant and icosahedral phases.

AB - Structural evolution during mechanical alloying and subsequent heat treatment of Al65Cu20Fe15 and Al65Cu20Fe10Si5 was studied by X-ray diffractometry (XRD), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). The Al65Cu20Fe15 and Al65Cu20Fe10Si5 powders milled for 10 h showed a layered structure consisting of Al-, Cu- and Fe-rich layers. DSC traces obtained from the powder during heating, up to 600°C, showed two exothermic peaks with peak temperatures of 330 and 440°C in Al65Cu20Fe15 and 330 and 500°C in Al65Cu20Fe10Si5 powders. The lower exothermic peaks correspond to the formation of Al2Cu and Al7Cu2Fe phases from the layered structure. The second high temperature exotherms correspond to the formation of Al(Fe,Cu) and 1/1 cubic approximant in the Al65Cu20Fe15 powder and to the formation of Al13Fe4 adn 1/1 cubic approximant in the Al65Cu20Fe10Si5 powder. The Al65Cu20Fe15 and Al65Cu20Fe10Si5 powders annealed for 5 h at 750°C showed microstructure consisting of Al(Cu,Fe) and Al13Fe4 phases, and Al13Fe4, icosahedral and new approximant phases, respectively. The partial substitution of Fe by Si increased the stability of the 1/1 cubic approximant and icosahedral phases.

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Structural evolution during heat treatment of mechanically alloyed Al-Cu-Fe-(Si) alloys

Abstract

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