The Disordering Process in an Li2 Ordered Alloy

J. A. Horton; A. Dasgupta; C. T. Liu

doi:10.1557/PROC-39-109

The Disordering Process in an Li₂ Ordered Alloy

J. A. Horton^*, A. Dasgupta, C. T. Liu

^*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

6 Citations (Scopus)

Abstract

The antiphase boundary (APB) structure and the disordering process have been studied by transmission electron microscopy (TEM) in a long-rangeordered alloy with Li₂ structure and composition (Ni₇₀Fe₃₀)₃(V₅₈Al₄₀Ti₂). With an increase in temperature from a single-phase field into a two-phase field, disordering occurs both homogeneously within ordered domains and heterogeneously along APBs. Disordering continues by a ripening process with the disordered islands shrinking while the disordered bands on the prior APBs grow. The APBs are partially aligned on {100} while the material is single phase. As disordering proceeds, the degree of alignment of the disordered bands on {100} increases until complete alignment results. A correlation of the APB structure with room temperature mechanical properties indicates no dramatic change at the transition to the two-phase structure.

Original language	English
Title of host publication	High-Temperature Ordered Intermetallic Alloys: Symposium Held November 26-28, 1984, Boston, Massachusetts, U.S.A
Editors	C. C. Koch
Publisher	Materials Research Society
Pages	109-116
ISBN (Print)	0931837049, 9780931837043
DOIs	https://doi.org/10.1557/PROC-39-109
Publication status	Published - Dec 1984
Externally published	Yes
Event	1984 Materials Research Society (MRS) fall meeting - Boston, Massachusetts, United States Duration: 26 Nov 1984 → 30 Nov 1984 https://www.mrs.org/fall1984

Publication series

Name	Materials Research Society Symposi
Volume	39
ISSN (Electronic)	0272-9172

Conference

Conference	1984 Materials Research Society (MRS) fall meeting
Country/Territory	United States
City	Boston, Massachusetts
Period	26/11/84 → 30/11/84
Internet address	https://www.mrs.org/fall1984

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Cite this

@inproceedings{46c302a29f4d42cfa1d4d774849d4e93,

title = "The Disordering Process in an Li2 Ordered Alloy",

abstract = "The antiphase boundary (APB) structure and the disordering process have been studied by transmission electron microscopy (TEM) in a long-rangeordered alloy with Li2 structure and composition (Ni70Fe30)3(V58Al40Ti2). With an increase in temperature from a single-phase field into a two-phase field, disordering occurs both homogeneously within ordered domains and heterogeneously along APBs. Disordering continues by a ripening process with the disordered islands shrinking while the disordered bands on the prior APBs grow. The APBs are partially aligned on {100} while the material is single phase. As disordering proceeds, the degree of alignment of the disordered bands on {100} increases until complete alignment results. A correlation of the APB structure with room temperature mechanical properties indicates no dramatic change at the transition to the two-phase structure.",

author = "Horton, {J. A.} and A. Dasgupta and Liu, {C. T.}",

year = "1984",

month = dec,

doi = "10.1557/PROC-39-109",

language = "English",

isbn = "0931837049",

series = "Materials Research Society Symposi",

publisher = "Materials Research Society",

pages = "109--116",

editor = "Koch, {C. C.}",

booktitle = "High-Temperature Ordered Intermetallic Alloys: Symposium Held November 26-28, 1984, Boston, Massachusetts, U.S.A",

address = "United States",

note = "1984 Materials Research Society (MRS) fall meeting ; Conference date: 26-11-1984 Through 30-11-1984",

url = "https://www.mrs.org/fall1984",

}

Horton, JA, Dasgupta, A & Liu, CT 1984, The Disordering Process in an Li₂ Ordered Alloy. in CC Koch (ed.), High-Temperature Ordered Intermetallic Alloys: Symposium Held November 26-28, 1984, Boston, Massachusetts, U.S.A. Materials Research Society Symposi, vol. 39, Materials Research Society, pp. 109-116, 1984 Materials Research Society (MRS) fall meeting, Boston, Massachusetts, United States, 26/11/84. https://doi.org/10.1557/PROC-39-109

The Disordering Process in an Li₂ Ordered Alloy. / Horton, J. A.; Dasgupta, A.; Liu, C. T.
High-Temperature Ordered Intermetallic Alloys: Symposium Held November 26-28, 1984, Boston, Massachusetts, U.S.A. ed. / C. C. Koch. Materials Research Society, 1984. p. 109-116 (Materials Research Society Symposi; Vol. 39).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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N2 - The antiphase boundary (APB) structure and the disordering process have been studied by transmission electron microscopy (TEM) in a long-rangeordered alloy with Li2 structure and composition (Ni70Fe30)3(V58Al40Ti2). With an increase in temperature from a single-phase field into a two-phase field, disordering occurs both homogeneously within ordered domains and heterogeneously along APBs. Disordering continues by a ripening process with the disordered islands shrinking while the disordered bands on the prior APBs grow. The APBs are partially aligned on {100} while the material is single phase. As disordering proceeds, the degree of alignment of the disordered bands on {100} increases until complete alignment results. A correlation of the APB structure with room temperature mechanical properties indicates no dramatic change at the transition to the two-phase structure.

AB - The antiphase boundary (APB) structure and the disordering process have been studied by transmission electron microscopy (TEM) in a long-rangeordered alloy with Li2 structure and composition (Ni70Fe30)3(V58Al40Ti2). With an increase in temperature from a single-phase field into a two-phase field, disordering occurs both homogeneously within ordered domains and heterogeneously along APBs. Disordering continues by a ripening process with the disordered islands shrinking while the disordered bands on the prior APBs grow. The APBs are partially aligned on {100} while the material is single phase. As disordering proceeds, the degree of alignment of the disordered bands on {100} increases until complete alignment results. A correlation of the APB structure with room temperature mechanical properties indicates no dramatic change at the transition to the two-phase structure.

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