NDLI: Fractographic Analysis of Weld Metal and HAZ Regions of API X-80 Steel Subjected to Simulation of the Reel-Lay Method

Content Provider	Springer Nature Link
Author	Beltrão, M. A. N. Bastian, F. L.
Copyright Year	2014
Abstract	The reel-lay method is a process commonly used for rigid riser installation. During this process, riser materials are subjected to high strain levels and associated plastic damage which can affect their structural integrity. The aim of this work was to evaluate the fracture surfaces at weld metal and heat-affected zone regions of API X-80 steel three-point bend specimens, SE(B), subjected to reel-lay method simulations. The pre-existence of circumferential planar defects at 12 o’clock position was considered and the J-integral was used to simulate the reel-lay condition at the defects. Different strain levels considering conditions less and more severe than the real one were also studied. The results showed a great influence of J magnitude on fracture surface morphology. The increase of J magnitude led to a greater local surface damage on the specimens and stable crack growth during reel-lay simulation. High loading conditions should be avoided in the operation in order to prevent further structural damage of the materials.
Starting Page	3523
Ending Page	3533
Page Count	11
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	23
Issue Number	10
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2014-07-29
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	API X-80 steel circumferential welded joint fractographic analysis J-integral reel-lay method simulation Characterization and Evaluation of Materials Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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