Study of Mechanical Properties and Characterization of Pipe Steel Welded by Hybrid (Friction Stir Weld + Root Arc Weld) Approach
| Autor: | Murray W. Mahoney, Andrew J. Wasson, Zhili Feng, Doug P. Fairchild, Samuel Sanderson, Yanli Wang, Yong Chae Lim |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Friction Stir Welding and Processing VIII ISBN: 9783319486048 Friction Stir Welding and Processing VIII |
| DOI: | 10.1002/9781119093343.ch6 |
| Popis: | Friction stir welding (FSW) has recently attracted attention as an alternative construction process for gas/oil transportation applications due to advantages compared to fusion welding techniques. A significant advantage is the ability of FSW to weld the entire or nearly the entire wall thickness in a single pass, while fusion welding requires multiple passes. However, when FSW is applied to a pipe or tube geometry, an internal back support anvil is required to resist the plunging forces exerted during FSW. Unfortunately, it may not be convenient or economical to use internal backing support due to limited access for some applications. To overcome this issue, ExxonMobil recently developed a new concept, combining root arc welding and FSW. That is, a root arc weld is made prior to FSW that supports the normal loads associated with FSW. In the present work, mechanical properties of a FSW + root arc welded pipe steel are reported including microstructure and microhardness. |
| Databáze: | OpenAIRE |
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