DocumentCode :
3589878
Title :
Anomaly analysis of tensile mechanical properties of welding test pieces
Author :
Jing Yao ; Weiguo Hou
Author_Institution :
Sci. & Technol. on Reliability Phys. & Applic. of Electron. Component Lab., CEPREI, Guangzhou, China
fYear :
2014
Firstpage :
882
Lastpage :
885
Abstract :
Aiming at the mechanical properties abnormality of one welding specimen for an aerospace cylinder, scanning electron microscope (SEM) 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 obtained. 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, whose direction was consistent with that of the fracture in the up arc zonal fracture region. The reason of abnormality of tensile property of welding test pieces was that relatively significant texture structure formed in the welding heat affected zone, while the formation of texture structure was related to the temperature field and stress in the process of welding.
Keywords :
aerospace components; fracture; metallography; scanning electron microscopes; stress analysis; tensile strength; tensile testing; welding; aerospace cylinder; anomaly analysis; arc ribbons; arc zonal fracture region; fracture analysis; mechanical property abnormality; metallographic microscope; scanning electron microscope; temperature field; tensile mechanical properties; tensile test; texture structure formation; weld structure; welding heat affected zone; welding specimen; welding test pieces; Heating; Microstructure; Morphology; Scanning electron microscopy; Stress; Welding; heat affected zone; property abnormality; texture structure; welding test pieces;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Reliability, Maintainability and Safety (ICRMS), 2014 International Conference on
Print_ISBN :
978-1-4799-6631-8
Type :
conf
DOI :
10.1109/ICRMS.2014.7107329
Filename :
7107329
Link To Document :
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