Mechanism of Welding Test Pieces in Tensile Property Anomaly

Yu Chen; Xing Hua Chen; Shuang Wang

doi:10.4028/www.scientific.net/AMR.472-475.1147

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 472-475Mechanism of Welding Test Pieces in Tensile...

Mechanism of Welding Test Pieces in Tensile Property Anomaly

Abstract:

Aiming at the mechanical property abnormality of a certain cylinder test piece for aerospace application, scanning electron microscope and metallographic microscope were used to observe and analyze the fracture and weld structure of test pieces under tensile test, and the reason of property abnormality was determined. On the fracture of welding test pieces under tensile test formed two evident characteristic zones, one of which was the initial zone looking like arc ribbons alternating with each other. More obvious texture structure formed in the welding heat affected zone, with the direction consistent with that of the fracture in the up arc zonal fracture region. The reason of the abnormality was that relatively significant texture structure formed in the welding heat affected zone, while its formation was related to the temperature field and stress during the process of welding.

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Advanced Manufacturing Technology, ICMSE 2012

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Periodical:

Advanced Materials Research (Volumes 472-475)

Pages:

1147-1150

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.472-475.1147

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Online since:

February 2012

Authors:

Yu Chen, Xing Hua Chen, Shuang Wang

Keywords:

Heat Affected Zone (HAZ), Property Abnormality, Texture Structure, Welding Test Pieces

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