Microstructural characteristics and deformation properties in superplastic intermetallics

T. G. Nieh; J. Wadsworth

doi:10.1016/s0921-5093(97)00564-9

Microstructural characteristics and deformation properties in superplastic intermetallics

T. G. Nieh
, J. Wadsworth

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

46 Citations (Scopus)

Abstract

Superplasticity in intermetallic alloys is reviewed. Intermetallics which have been demonstrated to be superplastic include nickel-based (Ni₃Al, Ni₃Si), iron-based (Fe₃Al, FeAl), and titanium-based (Ti₃Al, TiAl) alloys. Superplasticity has been recorded in both quasi-single-phase and two-phase intermetallic alloys. The microstructural characteristics and deformation properties of superplastic intermetallics are in many ways similar to those observed in conventional superplastic metal alloys. In the present paper, some of the unusual microstructural features pertinent to superplastic intermetallics are described. Two interesting features are especially highlighted: intermetallics can exhibit superplastic properties in a relatively coarse-grained condition (> 100 μm); and intermetallics with a metastable, inhomogeneous microstructure can exhibit superplasticity at low temperatures. Examples are given for both cases. In addition, the superplastic deformation mechanisms as well as microstructural characteristics in different intermetallics are discussed. © 1997 Elsevier Science S.A.

Original language	English
Pages (from-to)	88-96
Journal	Materials Science and Engineering A
Volume	239-240
Issue number	1-2
DOIs	https://doi.org/10.1016/s0921-5093(97)00564-9
Publication status	Published - Dec 1997
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Duplex
Dynamic recrystallization
Forming
Grain boundary sliding
Grain size
Microstructure
Phase transformation
Superplasticity

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title = "Microstructural characteristics and deformation properties in superplastic intermetallics",

abstract = "Superplasticity in intermetallic alloys is reviewed. Intermetallics which have been demonstrated to be superplastic include nickel-based (Ni3Al, Ni3Si), iron-based (Fe3Al, FeAl), and titanium-based (Ti3Al, TiAl) alloys. Superplasticity has been recorded in both quasi-single-phase and two-phase intermetallic alloys. The microstructural characteristics and deformation properties of superplastic intermetallics are in many ways similar to those observed in conventional superplastic metal alloys. In the present paper, some of the unusual microstructural features pertinent to superplastic intermetallics are described. Two interesting features are especially highlighted: intermetallics can exhibit superplastic properties in a relatively coarse-grained condition (> 100 μm); and intermetallics with a metastable, inhomogeneous microstructure can exhibit superplasticity at low temperatures. Examples are given for both cases. In addition, the superplastic deformation mechanisms as well as microstructural characteristics in different intermetallics are discussed. {\textcopyright} 1997 Elsevier Science S.A.",

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author = "Nieh, \{T. G.\} and J. Wadsworth",

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doi = "10.1016/s0921-5093(97)00564-9",

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T1 - Microstructural characteristics and deformation properties in superplastic intermetallics

AU - Nieh, T. G.

AU - Wadsworth, J.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 1997/12

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N2 - Superplasticity in intermetallic alloys is reviewed. Intermetallics which have been demonstrated to be superplastic include nickel-based (Ni3Al, Ni3Si), iron-based (Fe3Al, FeAl), and titanium-based (Ti3Al, TiAl) alloys. Superplasticity has been recorded in both quasi-single-phase and two-phase intermetallic alloys. The microstructural characteristics and deformation properties of superplastic intermetallics are in many ways similar to those observed in conventional superplastic metal alloys. In the present paper, some of the unusual microstructural features pertinent to superplastic intermetallics are described. Two interesting features are especially highlighted: intermetallics can exhibit superplastic properties in a relatively coarse-grained condition (> 100 μm); and intermetallics with a metastable, inhomogeneous microstructure can exhibit superplasticity at low temperatures. Examples are given for both cases. In addition, the superplastic deformation mechanisms as well as microstructural characteristics in different intermetallics are discussed. © 1997 Elsevier Science S.A.

AB - Superplasticity in intermetallic alloys is reviewed. Intermetallics which have been demonstrated to be superplastic include nickel-based (Ni3Al, Ni3Si), iron-based (Fe3Al, FeAl), and titanium-based (Ti3Al, TiAl) alloys. Superplasticity has been recorded in both quasi-single-phase and two-phase intermetallic alloys. The microstructural characteristics and deformation properties of superplastic intermetallics are in many ways similar to those observed in conventional superplastic metal alloys. In the present paper, some of the unusual microstructural features pertinent to superplastic intermetallics are described. Two interesting features are especially highlighted: intermetallics can exhibit superplastic properties in a relatively coarse-grained condition (> 100 μm); and intermetallics with a metastable, inhomogeneous microstructure can exhibit superplasticity at low temperatures. Examples are given for both cases. In addition, the superplastic deformation mechanisms as well as microstructural characteristics in different intermetallics are discussed. © 1997 Elsevier Science S.A.

KW - Duplex

KW - Dynamic recrystallization

KW - Forming

KW - Grain boundary sliding

KW - Grain size

KW - Microstructure

KW - Phase transformation

KW - Superplasticity

UR - https://www.scopus.com/pages/publications/0031384867

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U2 - 10.1016/s0921-5093(97)00564-9

DO - 10.1016/s0921-5093(97)00564-9

M3 - RGC 21 - Publication in refereed journal

SN - 0921-5093

VL - 239-240

SP - 88

EP - 96

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

IS - 1-2

ER -

Microstructural characteristics and deformation properties in superplastic intermetallics

Abstract

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Research Keywords

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