Microstructure and Corrosion Resistant Property Research of Super 304H and TP347H Heat-Resistant Steel Welding Joint

Guang Feng Wu; Xiao Bin Zhang; Wei Wu

doi:10.4028/www.scientific.net/AMR.295-297.1402

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 295-297Microstructure and Corrosion Resistant Property...

Microstructure and Corrosion Resistant Property Research of Super 304H and TP347H Heat-Resistant Steel Welding Joint

Abstract:

Microstructure of Super 304H and TP347H austenitic heat resistance steel welding joint by handwork argon tungsten-arc welding and electro-chemical corrosion property of weld metal and two base materials were investigated by SEM and M273 constant potential rectifier. The results shows that microstructure of the weld metalwere austenitic matrix + δ ferrite; In 5% HCl Solution, corrosion resistant capabilities were super 304H base material＞ weld metal＞TP347H base material; in 9.8% H₂SO₄Solution, corrosion resistant capabilities were Super 304H base material＞TP347H base material＞ weld metal; Super 304H and TP347H austenitic heat resistance steel welding joint has better corrosion resistant property in HCl solution than in H₂SO₄ solution; Inter-crystalline corrosion results were consistence to results electro-chemical corrosion experiment in 9.8% H₂SO₄ solution.

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Manufacturing Science and Technology, AEMT2011

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Periodical:

Advanced Materials Research (Volumes 295-297)

Pages:

1402-1407

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.295-297.1402

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Online since:

July 2011

Authors:

Guang Feng Wu, Xiao Bin Zhang, Wei Wu

Keywords:

Argon Tungsten-Arc Welding, Corrosion Resistance Properties, Microstructure, Super 304H and TP347H Austenitic Heat Resistance Steel

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