Failure Analysis on Tee Joint Crack of Subcritical Power Station Boiler Final Superheater Header

Xiang Feng Zheng; Yan Ting Feng; Xiao Guang Niu; Qing Wang; Xiao Jun Hao; Wen Bin Li; Xue Xia Xu; Peng Sun

doi:10.4028/www.scientific.net/AMR.311-313.615

Paper Titles

Effects of Element Yttrium on the Microstructure and Mechanical Properties of as-Cast Zn-25Al-5Mg-2.5Si Alloy
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Rheological Constitutive Model Depending upon Temperature and Strain Rate of Sheet TC1 Titanium Alloy
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Effect of Rotating Magnetic Field on Microstructure Evolution of Pb-Bi Alloys
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Effects of Annealing Technique on Texture Attenuation of Hot-Rolling AZ31 Magnesium Alloy Sheets
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Failure Analysis on Tee Joint Crack of Subcritical Power Station Boiler Final Superheater Header
p.615

A Study on the SCC Susceptibility of Twin-Wire Metal Inert Gas Arc Welds in 7A52 Al Alloy Plate
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Study on CPM9V High Speed Steel Ring Prepared by Spray Forming
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Oxidation and Melting Characterizations of AZ91D Granules during In Situ Melting
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Influence of SiC Particle Size on the Wear Properties of SiC/Cu Composites
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 311-313Failure Analysis on Tee Joint Crack of Subcritical...

Failure Analysis on Tee Joint Crack of Subcritical Power Station Boiler Final Superheater Header

Abstract:

Through methods, such as microscope analysis, mechanical analysis, chemical analysis, metallographic examination, the causes resulting in tee joint crack of subcritical power station boiler final superheater header (12Cr1MoV) have been analyzed. The result indicates the tee joint crack is reheat crack, and irrational structure and excessive welding residual stress are the primary inducement of tube joint crack.