Whisker alignment of Ti-6Al-4V/TiB composites during deformation by transformation superplasticity

C. Schuh; D. C. Dunand

doi:10.1016/S0749-6419(00)00038-3

Whisker alignment of Ti-6Al-4V/TiB composites during deformation by transformation superplasticity

C. Schuh, D. C. Dunand^*

^*Corresponding author for this work

Materials Science and Engineering

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

69 Scopus citations

Abstract

We examine the effect of 10 vol.% TiB whisker reinforcement on transformation superplasticity of Ti-6Al-4V, induced by thermal cycling about the α/β phase transformation range of the matrix under a uniaxial tensile stress. During superplastic deformation, the whiskers gradually align along the external loading axis, as measured by electron back-scattering diffraction of deformed specimens. The composites exhibit a gradual decrease in effective deformation rate during superplastic elongation. This effect is attributed to increased load transfer from matrix to whisker upon whisker alignment, and is explained with elastic calculations of stress partitioning.

Original language	English (US)
Pages (from-to)	317-340
Number of pages	24
Journal	International journal of plasticity
Volume	17
Issue number	3
DOIs	https://doi.org/10.1016/S0749-6419(00)00038-3
State	Published - 2001

Keywords

A. Phase transformation
Superplasticity
Titanium composites

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1016/S0749-6419(00)00038-3

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title = "Whisker alignment of Ti-6Al-4V/TiB composites during deformation by transformation superplasticity",

abstract = "We examine the effect of 10 vol.% TiB whisker reinforcement on transformation superplasticity of Ti-6Al-4V, induced by thermal cycling about the α/β phase transformation range of the matrix under a uniaxial tensile stress. During superplastic deformation, the whiskers gradually align along the external loading axis, as measured by electron back-scattering diffraction of deformed specimens. The composites exhibit a gradual decrease in effective deformation rate during superplastic elongation. This effect is attributed to increased load transfer from matrix to whisker upon whisker alignment, and is explained with elastic calculations of stress partitioning.",

keywords = "A. Phase transformation, Superplasticity, Titanium composites",

author = "C. Schuh and Dunand, {D. C.}",

note = "Funding Information: This research was primarily funded by NSF SBIR No. 9760593 through a subcontract from Dynamet Technology. We also gratefully acknowledge partial support from the U.S. Army Research Office under grant DAAH004-95-1-0629, monitored by Dr. W.C. Simmons, and helpful discussions with W. Zimmer (Dynamet Technology) and Dr. A. Wanner (Northwestern University). C.S. also acknowledges support from the US Department of Defense in the form of a National Defense Science and Engineering Graduate Fellowship. ",

year = "2001",

doi = "10.1016/S0749-6419(00)00038-3",

language = "English (US)",

volume = "17",

pages = "317--340",

journal = "International journal of plasticity",

issn = "0749-6419",

publisher = "Elsevier Limited",

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T1 - Whisker alignment of Ti-6Al-4V/TiB composites during deformation by transformation superplasticity

AU - Schuh, C.

AU - Dunand, D. C.

N1 - Funding Information: This research was primarily funded by NSF SBIR No. 9760593 through a subcontract from Dynamet Technology. We also gratefully acknowledge partial support from the U.S. Army Research Office under grant DAAH004-95-1-0629, monitored by Dr. W.C. Simmons, and helpful discussions with W. Zimmer (Dynamet Technology) and Dr. A. Wanner (Northwestern University). C.S. also acknowledges support from the US Department of Defense in the form of a National Defense Science and Engineering Graduate Fellowship.

PY - 2001

Y1 - 2001

N2 - We examine the effect of 10 vol.% TiB whisker reinforcement on transformation superplasticity of Ti-6Al-4V, induced by thermal cycling about the α/β phase transformation range of the matrix under a uniaxial tensile stress. During superplastic deformation, the whiskers gradually align along the external loading axis, as measured by electron back-scattering diffraction of deformed specimens. The composites exhibit a gradual decrease in effective deformation rate during superplastic elongation. This effect is attributed to increased load transfer from matrix to whisker upon whisker alignment, and is explained with elastic calculations of stress partitioning.

AB - We examine the effect of 10 vol.% TiB whisker reinforcement on transformation superplasticity of Ti-6Al-4V, induced by thermal cycling about the α/β phase transformation range of the matrix under a uniaxial tensile stress. During superplastic deformation, the whiskers gradually align along the external loading axis, as measured by electron back-scattering diffraction of deformed specimens. The composites exhibit a gradual decrease in effective deformation rate during superplastic elongation. This effect is attributed to increased load transfer from matrix to whisker upon whisker alignment, and is explained with elastic calculations of stress partitioning.

KW - A. Phase transformation

KW - Superplasticity

KW - Titanium composites

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JO - International journal of plasticity

JF - International journal of plasticity

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ER -

Whisker alignment of Ti-6Al-4V/TiB composites during deformation by transformation superplasticity

Abstract

Keywords

ASJC Scopus subject areas

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