Effect of the interaction layer on the mechanical properties of Ti–6Al–4V alloy castings

G. Q. Wu; X. Cheng; Wei Sha; X. J. Cheng; J. Q. Zhao; H. Nan

doi:10.1016/j.matchemphys.2016.03.001

Effect of the interaction layer on the mechanical properties of Ti–6Al–4V alloy castings

G. Q. Wu, X. Cheng, Wei Sha, X. J. Cheng, J. Q. Zhao, H. Nan

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Abstract

The interaction between the face coat material of a mould and the titanium alloy will cause oxygen penetration during the casting and solidification process, resulting in the formation of an α-case interaction layer at the metal surface that influences the mechanical properties of the cast components. In this study, the influence of α-case thickness and loading positions in a Ti–6Al–4V (Ti64) alloy on metal hardness, impact properties and bending strength was investigated. The results showed that the metal surface α-case consisted of many coarse α laths which has a higher hardness than metal matrix. The mechanical properties of the alloy are influenced by the α-case. The alloy bending strength was observed to have changed linearly with the thickness of sample.

Original language	English
Pages (from-to)	125-130
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	175
Early online date	09 Mar 2016
DOIs	https://doi.org/10.1016/j.matchemphys.2016.03.001
Publication status	Published - 01 Jun 2016

Keywords

Hardness
Optical microscopy
Mechanical testing
Solidification

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10.1016/j.matchemphys.2016.03.001

Effect of the interaction layer on the mechanical properties of Ti-6Al- 4V alloy castings
© 2016 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited.
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title = "Effect of the interaction layer on the mechanical properties of Ti–6Al–4V alloy castings",

abstract = "The interaction between the face coat material of a mould and the titanium alloy will cause oxygen penetration during the casting and solidification process, resulting in the formation of an α-case interaction layer at the metal surface that influences the mechanical properties of the cast components. In this study, the influence of α-case thickness and loading positions in a Ti–6Al–4V (Ti64) alloy on metal hardness, impact properties and bending strength was investigated. The results showed that the metal surface α-case consisted of many coarse α laths which has a higher hardness than metal matrix. The mechanical properties of the alloy are influenced by the α-case. The alloy bending strength was observed to have changed linearly with the thickness of sample.",

keywords = "Hardness, Optical microscopy, Mechanical testing, Solidification",

author = "Wu, {G. Q.} and X. Cheng and Wei Sha and Cheng, {X. J.} and Zhao, {J. Q.} and H. Nan",

year = "2016",

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doi = "10.1016/j.matchemphys.2016.03.001",

language = "English",

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T1 - Effect of the interaction layer on the mechanical properties of Ti–6Al–4V alloy castings

AU - Wu, G. Q.

AU - Cheng, X.

AU - Sha, Wei

AU - Cheng, X. J.

AU - Zhao, J. Q.

AU - Nan, H.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - The interaction between the face coat material of a mould and the titanium alloy will cause oxygen penetration during the casting and solidification process, resulting in the formation of an α-case interaction layer at the metal surface that influences the mechanical properties of the cast components. In this study, the influence of α-case thickness and loading positions in a Ti–6Al–4V (Ti64) alloy on metal hardness, impact properties and bending strength was investigated. The results showed that the metal surface α-case consisted of many coarse α laths which has a higher hardness than metal matrix. The mechanical properties of the alloy are influenced by the α-case. The alloy bending strength was observed to have changed linearly with the thickness of sample.

AB - The interaction between the face coat material of a mould and the titanium alloy will cause oxygen penetration during the casting and solidification process, resulting in the formation of an α-case interaction layer at the metal surface that influences the mechanical properties of the cast components. In this study, the influence of α-case thickness and loading positions in a Ti–6Al–4V (Ti64) alloy on metal hardness, impact properties and bending strength was investigated. The results showed that the metal surface α-case consisted of many coarse α laths which has a higher hardness than metal matrix. The mechanical properties of the alloy are influenced by the α-case. The alloy bending strength was observed to have changed linearly with the thickness of sample.

KW - Hardness

KW - Optical microscopy

KW - Mechanical testing

KW - Solidification

U2 - 10.1016/j.matchemphys.2016.03.001

DO - 10.1016/j.matchemphys.2016.03.001

M3 - Article

SN - 0254-0584

VL - 175

SP - 125

EP - 130

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

ER -

Effect of the interaction layer on the mechanical properties of Ti–6Al–4V alloy castings

Abstract

Keywords

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