The determination of residual stress in extruded Ti-6Al-4V by contour method and finite element analysis

J.D. Pollard; S. Rahimi; A. Watford; M. Jackson; B.P. Wynne

doi:10.1002/9781119296126.ch46

The determination of residual stress in extruded Ti-6Al-4V by contour method and finite element analysis

J.D. Pollard, S. Rahimi, A. Watford, M. Jackson, B.P. Wynne

Design, Manufacturing And Engineering Management

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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Abstract

The contour method has been used to assess the level of residual stress generated during the post extrusion air cool and water quenching of a Ti-6Al-4V extruded bar. A length of the extrudate was transversally sectioned using electrical discharge machining (EDM), resulting in minimal damage to the cut surface; the stress relieved profile present at the cut surface was then measured using a coordinate measuring machine (CMM). The cut section was recreated in an ABAQUS finite element (FE) model and the inverse of the stress relieved profile recorded by CMM was applied as a boundary condition; by forcing the model’s surface topology to match the measured cut surface, residual stresses normal, i.e. longitudinal stresses, to the cut surface of the extruded profile were then calculated. Results were compared to air cooling and quenching simulations performed in the DEFORM FE package. The distribution of tensile and compressive residual stresses observed via experimental and simulation work were found to be a good match with the distribution correlating with local variations of cooling rate during quenching.

Original language	English
Title of host publication	Proceedings of the 13th World Conference on Titanium
Editors	Vasisht Venkatesh, Adam L. Pilchak, John E. Allison, Sreeramamurthy Ankem, Rodney Boyer, Julie Christodoulou, Hamish L. Fraser, M. Ashraf Imam, Yoji Kosaka, Henry J. Rack, Amit Chatterjee, Andy Woodfield
Place of Publication	Hoboken, New Jersey
Pages	305-310
Number of pages	6
DOIs	https://doi.org/10.1002/9781119296126.ch46
Publication status	Published - 6 May 2016
Event	Ti-2015: The 13th World Conference on Titanium - California, San Diego, United States Duration: 16 Aug 2015 → 20 Aug 2015

Conference

Conference	Ti-2015: The 13th World Conference on Titanium
Country/Territory	United States
City	San Diego
Period	16/08/15 → 20/08/15

Keywords

extrusion
contour method
residual stress
Ti-6Al-4V
FEM

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10.1002/9781119296126.ch46

Pollard-etal-Ti-2015-residual-stress-in-extruded-Ti-6Al-4V-by-contour-methodAccepted author manuscript, 958 KB

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Pollard, J. D., Rahimi, S., Watford, A., Jackson, M., & Wynne, B. P. (2016). The determination of residual stress in extruded Ti-6Al-4V by contour method and finite element analysis. In V. Venkatesh, A. L. Pilchak, J. E. Allison, S. Ankem, R. Boyer, J. Christodoulou, H. L. Fraser, M. Ashraf Imam, Y. Kosaka, H. J. Rack, A. Chatterjee, & A. Woodfield (Eds.), Proceedings of the 13th World Conference on Titanium (pp. 305-310). https://doi.org/10.1002/9781119296126.ch46

Pollard, J.D. ; Rahimi, S. ; Watford, A. ; Jackson, M. ; Wynne, B.P. / The determination of residual stress in extruded Ti-6Al-4V by contour method and finite element analysis. Proceedings of the 13th World Conference on Titanium. editor / Vasisht Venkatesh ; Adam L. Pilchak ; John E. Allison ; Sreeramamurthy Ankem ; Rodney Boyer ; Julie Christodoulou ; Hamish L. Fraser ; M. Ashraf Imam ; Yoji Kosaka ; Henry J. Rack ; Amit Chatterjee ; Andy Woodfield. Hoboken, New Jersey, 2016. pp. 305-310

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abstract = "The contour method has been used to assess the level of residual stress generated during the post extrusion air cool and water quenching of a Ti-6Al-4V extruded bar. A length of the extrudate was transversally sectioned using electrical discharge machining (EDM), resulting in minimal damage to the cut surface; the stress relieved profile present at the cut surface was then measured using a coordinate measuring machine (CMM). The cut section was recreated in an ABAQUS finite element (FE) model and the inverse of the stress relieved profile recorded by CMM was applied as a boundary condition; by forcing the model{\textquoteright}s surface topology to match the measured cut surface, residual stresses normal, i.e. longitudinal stresses, to the cut surface of the extruded profile were then calculated. Results were compared to air cooling and quenching simulations performed in the DEFORM FE package. The distribution of tensile and compressive residual stresses observed via experimental and simulation work were found to be a good match with the distribution correlating with local variations of cooling rate during quenching. ",

keywords = "extrusion, contour method , residual stress, Ti-6Al-4V, FEM",

author = "J.D. Pollard and S. Rahimi and A. Watford and M. Jackson and B.P. Wynne",

note = "This is the peer reviewed version of the following article: Pollard, J.D., Rahimi, S., Watford, A., Jackson, M. and Wynne, B.P. (2016) The Determination of Residual Stress in Extruded Ti-6Al-4V by Contour Method and Finite Element Analysis, in Proceedings of the 13th World Conference on Titanium (eds V. Venkatesh, A. L. Pilchak, J. E. Allison, S. Ankem, R. Boyer, J. Christodoulou, H. L. Fraser, M. A. Imam, Y. Kosaka, H. J. Rack, A. Chatterjee and A. Woodfield), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781119296126.ch46, which has been published in final form at http://dx.doi.org/10.1002/9781119296126.ch46. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.; Ti-2015: The 13th World Conference on Titanium ; Conference date: 16-08-2015 Through 20-08-2015",

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Pollard, JD, Rahimi, S, Watford, A, Jackson, M & Wynne, BP 2016, The determination of residual stress in extruded Ti-6Al-4V by contour method and finite element analysis. in V Venkatesh, AL Pilchak, JE Allison, S Ankem, R Boyer, J Christodoulou, HL Fraser, M Ashraf Imam, Y Kosaka, HJ Rack, A Chatterjee & A Woodfield (eds), Proceedings of the 13th World Conference on Titanium. Hoboken, New Jersey, pp. 305-310, Ti-2015: The 13th World Conference on Titanium, San Diego, United States, 16/08/15. https://doi.org/10.1002/9781119296126.ch46

The determination of residual stress in extruded Ti-6Al-4V by contour method and finite element analysis. / Pollard, J.D.; Rahimi, S.; Watford, A.; Jackson, M.; Wynne, B.P.

Proceedings of the 13th World Conference on Titanium. ed. / Vasisht Venkatesh; Adam L. Pilchak; John E. Allison; Sreeramamurthy Ankem; Rodney Boyer; Julie Christodoulou; Hamish L. Fraser; M. Ashraf Imam; Yoji Kosaka; Henry J. Rack; Amit Chatterjee; Andy Woodfield. Hoboken, New Jersey, 2016. p. 305-310.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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N1 - This is the peer reviewed version of the following article: Pollard, J.D., Rahimi, S., Watford, A., Jackson, M. and Wynne, B.P. (2016) The Determination of Residual Stress in Extruded Ti-6Al-4V by Contour Method and Finite Element Analysis, in Proceedings of the 13th World Conference on Titanium (eds V. Venkatesh, A. L. Pilchak, J. E. Allison, S. Ankem, R. Boyer, J. Christodoulou, H. L. Fraser, M. A. Imam, Y. Kosaka, H. J. Rack, A. Chatterjee and A. Woodfield), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781119296126.ch46, which has been published in final form at http://dx.doi.org/10.1002/9781119296126.ch46. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

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N2 - The contour method has been used to assess the level of residual stress generated during the post extrusion air cool and water quenching of a Ti-6Al-4V extruded bar. A length of the extrudate was transversally sectioned using electrical discharge machining (EDM), resulting in minimal damage to the cut surface; the stress relieved profile present at the cut surface was then measured using a coordinate measuring machine (CMM). The cut section was recreated in an ABAQUS finite element (FE) model and the inverse of the stress relieved profile recorded by CMM was applied as a boundary condition; by forcing the model’s surface topology to match the measured cut surface, residual stresses normal, i.e. longitudinal stresses, to the cut surface of the extruded profile were then calculated. Results were compared to air cooling and quenching simulations performed in the DEFORM FE package. The distribution of tensile and compressive residual stresses observed via experimental and simulation work were found to be a good match with the distribution correlating with local variations of cooling rate during quenching.

AB - The contour method has been used to assess the level of residual stress generated during the post extrusion air cool and water quenching of a Ti-6Al-4V extruded bar. A length of the extrudate was transversally sectioned using electrical discharge machining (EDM), resulting in minimal damage to the cut surface; the stress relieved profile present at the cut surface was then measured using a coordinate measuring machine (CMM). The cut section was recreated in an ABAQUS finite element (FE) model and the inverse of the stress relieved profile recorded by CMM was applied as a boundary condition; by forcing the model’s surface topology to match the measured cut surface, residual stresses normal, i.e. longitudinal stresses, to the cut surface of the extruded profile were then calculated. Results were compared to air cooling and quenching simulations performed in the DEFORM FE package. The distribution of tensile and compressive residual stresses observed via experimental and simulation work were found to be a good match with the distribution correlating with local variations of cooling rate during quenching.

KW - extrusion

KW - contour method

KW - residual stress

KW - Ti-6Al-4V

KW - FEM

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M3 - Conference contribution book

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BT - Proceedings of the 13th World Conference on Titanium

A2 - Venkatesh, Vasisht

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A2 - Allison, John E.

A2 - Ankem, Sreeramamurthy

A2 - Boyer, Rodney

A2 - Christodoulou, Julie

A2 - Fraser, Hamish L.

A2 - Ashraf Imam, M.

A2 - Kosaka, Yoji

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A2 - Chatterjee, Amit

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CY - Hoboken, New Jersey

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ER -

Pollard JD, Rahimi S, Watford A, Jackson M, Wynne BP. The determination of residual stress in extruded Ti-6Al-4V by contour method and finite element analysis. In Venkatesh V, Pilchak AL, Allison JE, Ankem S, Boyer R, Christodoulou J, Fraser HL, Ashraf Imam M, Kosaka Y, Rack HJ, Chatterjee A, Woodfield A, editors, Proceedings of the 13th World Conference on Titanium. Hoboken, New Jersey. 2016. p. 305-310 https://doi.org/10.1002/9781119296126.ch46

The determination of residual stress in extruded Ti-6Al-4V by contour method and finite element analysis

Abstract

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Salaheddin Rahimi, CEng FIMMM

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The determination of residual stress in extruded Ti-6Al-4V by contour method and finite element analysis

Abstract

Conference

Keywords

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Salaheddin Rahimi, CEng FIMMM

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