Mechanical Tensioning of High-Strength Aluminum Alloy Friction Stir Welds

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Fältnamn	Indikatorer	Metadata
000		03144naa a2200361 4500
001		oai:lup.lub.lu.se:32b2b324-e56e-41be-a4e1-2bb970374b78
003		SwePub
008		160401s2008 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://lup.lub.lu.se/record/14157072 URI
024	7	a https://doi.org/10.1007/s11661-008-9668-12 DOI
040		a (SwePub)lu
041		a engb eng
042		9 SwePub
072	7	a kon2 swepub-publicationtype
072	7	a ref2 swepub-contenttype
100	1	a Altenkirch, J.4 aut
245	1 0	a Mechanical Tensioning of High-Strength Aluminum Alloy Friction Stir Welds
264		c 2008-10-21
264	1	b Springer Science and Business Media LLC,c 2008
520		a The extent to which in-situ global mechanical tensioning (GMT) can be used to modify the residual stress state in friction stir (FS) welds is investigated in this article. Residual stress distributions have been determined by synchrotron X-ray and neutron diffraction for four sets of FS welds in high-strength AA7449-W51 and lithium containing AA2199-T8 aerospace aluminum alloys subjected to a systematic range of GMT levels. For the cases studied, the results indicate that the level of residual stresses present in the as-welded state is a function of the alloy. The rate of residual stress reduction brought about by GMT, however, is basically alloy independent; indeed, it is essentially linear with respect to the GMT load, so that the tensioning required to reduce the weld stresses to zero can be calculated directly from the stresses present in the untensioned case. For thin plates, proximity to the yield stress in the hot-softened zone means that a guideline rule is that 1 MPa of tensioning during welding reduces the tensile stress by approximately 1 MPa. The GMT was found to be less effective at greater depths in thick plates. Furthermore, a reduction in bending distortion and an increase in angular distortion was observed with increased GMT, while no effects on the weld microstructure and hardness were observed.
650	7	a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650	7	a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
700	1	a Steuwer, Axelu Lund University,Lunds universitet,European Spallation Source ESS AB,Stiftelser och övriga anknutna verksamheter,Other Institutions and Utilities4 aut0 (Swepub:lu)esss-ase
700	1	a Peel, M. J.4 aut
700	1	a Withers, P. J.4 aut
700	1	a Williams, S. W.4 aut
700	1	a Poad, M.4 aut
710	2	a European Spallation Source ESS ABb Stiftelser och övriga anknutna verksamheter4 org
773	0	t Symposium on Neutron and X-Ray Studies for Probing Materials Behavior held at the 137th TMS Annual Meeting and Exhibitiond : Springer Science and Business Media LLCg 39A, s. 3246-3259q 39A<3246-3259x 1073-5623
773	0	t Metallurgical and Materials Transactions Ad : Springer Science and Business Media LLCg 39A, s. 3246-3259q 39A<3246-3259x 1543-1940
856	4	u http://dx.doi.org/10.1007/s11661-008-9668-1y FULLTEXT
856	4 8	u https://lup.lub.lu.se/record/1415707
856	4 8	u https://doi.org/10.1007/s11661-008-9668-1

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Av författaren/redakt...: Altenkirch, J.; Steuwer, Axel; Peel, M. J.; Withers, P. J.; Williams, S. W.; Poad, M.

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