Residual strain distribution in bent composite boiler tubes

Fei Tang; Camden R. Hubbard; Gorti Sarma; James Keiser

doi:10.1016/j.msea.2006.04.050

Residual strain distribution in bent composite boiler tubes

Fei Tang, Camden R. Hubbard, Gorti Sarma, James Keiser

Corrosion Science & Technology

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

1 Scopus citations

Abstract

Kraft recovery boilers are typically constructed of carbon steel boiler tubes clad with a corrosion resistant layer, and these composite tubes are bent and welded together to form air port panels which enable the combustion air to enter the boiler. In this paper, the through-thickness residual strain in the carbon steel layer of non-heat-treated and heat-treated composite bent tubes were measured by neutron diffraction techniques and modeled by finite element modeling. The results can be used to optimize material selection and manufacturing processes to prevent stress corrosion and corrosion fatigue cracking in the boiler tubes.

Original language	English
Pages (from-to)	83-87
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	437
Issue number	1
DOIs	https://doi.org/10.1016/j.msea.2006.04.050
State	Published - Nov 10 2006

Funding

Research is sponsored by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Industrial Technologies Program, Industrial Materials for the Future (IMF) and the Forest Products Industries of the Future (IOF). Research is performed at the Oak Ridge National Laboratory managed by UT-Battelle, LLC under contract DE-AC05-00OR22725.

Funders	Funder number
Forest Products Industries
Industrial Materials for the Future
Office of Energy Efficiency and Renewable Energy, Industrial Technologies Program
U.S. Department of Energy

Keywords

Heat treatment
Neutron diffraction
Residual stresses

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10.1016/j.msea.2006.04.050

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AU - Sarma, Gorti

AU - Keiser, James

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N2 - Kraft recovery boilers are typically constructed of carbon steel boiler tubes clad with a corrosion resistant layer, and these composite tubes are bent and welded together to form air port panels which enable the combustion air to enter the boiler. In this paper, the through-thickness residual strain in the carbon steel layer of non-heat-treated and heat-treated composite bent tubes were measured by neutron diffraction techniques and modeled by finite element modeling. The results can be used to optimize material selection and manufacturing processes to prevent stress corrosion and corrosion fatigue cracking in the boiler tubes.

AB - Kraft recovery boilers are typically constructed of carbon steel boiler tubes clad with a corrosion resistant layer, and these composite tubes are bent and welded together to form air port panels which enable the combustion air to enter the boiler. In this paper, the through-thickness residual strain in the carbon steel layer of non-heat-treated and heat-treated composite bent tubes were measured by neutron diffraction techniques and modeled by finite element modeling. The results can be used to optimize material selection and manufacturing processes to prevent stress corrosion and corrosion fatigue cracking in the boiler tubes.

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KW - Residual stresses

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Residual strain distribution in bent composite boiler tubes

Abstract

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Keywords

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