Relaxing welding residual stresses by diamond like carbon coating on duplex titanium alloys

H. H. Lee; S. H. Wang; C. Y. Shih; C. M. Cheng; H. C. Hsu; K. Kan; C. M. Sung

doi:10.1179/174329308X271760

Relaxing welding residual stresses by diamond like carbon coating on duplex titanium alloys

H. H. Lee, S. H. Wang^*, C. Y. Shih, C. M. Cheng, H. C. Hsu, K. Kan, C. M. Sung

^*Corresponding author for this work

Department of Mechatronic Engineering

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

2 Citations (Scopus)

Abstract

The distribution of welding residual stresses in titanium alloy plates composed of Ti-6Al-4V (Ti-64) and Ti-4-5Al-3V-2Mo-2Fe (SP700) alloys was measured and calculated under the same heat input. Ti-64 alloy exhibited a higher residual tensile stress than the SP700 alloy due to the low thermal conductivity and thermal dlffusivity of the former alloy, In addition to its high thermal expansion coefficient. Diamond like carbon (DLC) thin film deposited on the as welded titanium alloy plates reduced the magnitude of the welding residual stress caused by the cathodlc arc physical vapour deposition (PVD) process. The distribution of the measured welding residual stresses agreed with the finite element method (FEM) simulated results very well.

Original language	English
Pages (from-to)	75-79
Number of pages	5
Journal	Science and Technology of Welding and Joining
Volume	13
Issue number	1
DOIs	https://doi.org/10.1179/174329308X271760
Publication status	Published - 2008 Jan

Keywords

Cathodic arc PVD
Diamond like carbon
Finite element
Residual stress
Welding

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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10.1179/174329308X271760

Cite this

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title = "Relaxing welding residual stresses by diamond like carbon coating on duplex titanium alloys",

abstract = "The distribution of welding residual stresses in titanium alloy plates composed of Ti-6Al-4V (Ti-64) and Ti-4-5Al-3V-2Mo-2Fe (SP700) alloys was measured and calculated under the same heat input. Ti-64 alloy exhibited a higher residual tensile stress than the SP700 alloy due to the low thermal conductivity and thermal dlffusivity of the former alloy, In addition to its high thermal expansion coefficient. Diamond like carbon (DLC) thin film deposited on the as welded titanium alloy plates reduced the magnitude of the welding residual stress caused by the cathodlc arc physical vapour deposition (PVD) process. The distribution of the measured welding residual stresses agreed with the finite element method (FEM) simulated results very well.",

keywords = "Cathodic arc PVD, Diamond like carbon, Finite element, Residual stress, Welding",

author = "Lee, {H. H.} and Wang, {S. H.} and Shih, {C. Y.} and Cheng, {C. M.} and Hsu, {H. C.} and K. Kan and Sung, {C. M.}",

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T1 - Relaxing welding residual stresses by diamond like carbon coating on duplex titanium alloys

AU - Lee, H. H.

AU - Wang, S. H.

AU - Shih, C. Y.

AU - Cheng, C. M.

AU - Hsu, H. C.

AU - Kan, K.

AU - Sung, C. M.

PY - 2008/1

Y1 - 2008/1

N2 - The distribution of welding residual stresses in titanium alloy plates composed of Ti-6Al-4V (Ti-64) and Ti-4-5Al-3V-2Mo-2Fe (SP700) alloys was measured and calculated under the same heat input. Ti-64 alloy exhibited a higher residual tensile stress than the SP700 alloy due to the low thermal conductivity and thermal dlffusivity of the former alloy, In addition to its high thermal expansion coefficient. Diamond like carbon (DLC) thin film deposited on the as welded titanium alloy plates reduced the magnitude of the welding residual stress caused by the cathodlc arc physical vapour deposition (PVD) process. The distribution of the measured welding residual stresses agreed with the finite element method (FEM) simulated results very well.

AB - The distribution of welding residual stresses in titanium alloy plates composed of Ti-6Al-4V (Ti-64) and Ti-4-5Al-3V-2Mo-2Fe (SP700) alloys was measured and calculated under the same heat input. Ti-64 alloy exhibited a higher residual tensile stress than the SP700 alloy due to the low thermal conductivity and thermal dlffusivity of the former alloy, In addition to its high thermal expansion coefficient. Diamond like carbon (DLC) thin film deposited on the as welded titanium alloy plates reduced the magnitude of the welding residual stress caused by the cathodlc arc physical vapour deposition (PVD) process. The distribution of the measured welding residual stresses agreed with the finite element method (FEM) simulated results very well.

KW - Cathodic arc PVD

KW - Diamond like carbon

KW - Finite element

KW - Residual stress

KW - Welding

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Relaxing welding residual stresses by diamond like carbon coating on duplex titanium alloys

Abstract

Keywords

ASJC Scopus subject areas

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