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Sökning: (WFRF:(Moat J.)) > (2009) > Residual Stresses i...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003854naa a2200373 4500
001oai:lup.lub.lu.se:7b9b6642-ca4a-4995-ad7a-f78e181888fe
003SwePub
008160401s2009 | |||||||||||000 ||eng|
024a https://lup.lub.lu.se/record/14772132 URI
024a https://doi.org/10.1007/s11661-009-9915-02 DOI
040 a (SwePub)lu
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
100a Moat, R. J.4 aut
2451 0a Residual Stresses in Inertia-Friction-Welded Dissimilar High-Strength Steels
264 c 2009-07-24
264 1b Springer Science and Business Media LLC,c 2009
520 a The welding of dissimilar alloys is seen increasingly as a way forward to improve efficiencies in modern aeroengines, because it allows one to tailor varying material property demands across a component. Dissimilar inertia friction welding (IFW) of two high-strength steels, Aermet 100 and S/CMV, has been identified as a possible joint for rotating gas turbine components and the resulting welds are investigated in this article. In order to understand the impact of the welding process and predict the life expectancy of such structures, a detailed understanding of the residual stress fields present in the welded component is needed. By combining energy-dispersive synchrotron X-ray diffraction (EDSXRD) and neutron diffraction, it has been possible to map the variations in lattice spacing of the ferritic phase on both sides of two tubular Aermet 100-S/CMV inertia friction welds (as-welded and postweld heat-treated condition) with a wall thickness of 37 mm. Laboratory-based XRD measurements were required to take into account the variation in the strain-free d-spacing across the weld region. It was found that, in the heat-affected zone (HAZ) slightly away from the weld line, residual stress fields showed tensile stresses increasing most dramatically in the hoop direction toward the weld line. Closer to the weld line, in the plastically affected zone, a sharp drop in the residual stresses was observed on both sides, although more dramatically in the S/CMV. In addition to residual stress mapping, synchrotron XRD measurements were carried out to map microstructural changes in thin slices cut from the welds. By studying the diffraction peak asymmetry of the 200-alpha diffraction peak, it was possible to demonstrate that a martensitic phase transformation in the S/CMV is responsible for the significant stress reduction close to the weld line. The postweld heat treatment (PWHT) chosen to avoid any overaging of the Aermet 100 and to temper the S/CMV martensite resulted in little stress relief on the S/CMV side of the weld.
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
700a Hughes, D. J.4 aut
700a 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
700a Iqbal, N.4 aut
700a Preuss, M.4 aut
700a Bray, S. E.4 aut
700a Rawson, M.4 aut
710a European Spallation Source ESS ABb Stiftelser och övriga anknutna verksamheter4 org
773t Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Scienced : Springer Science and Business Media LLCg 40A:9, s. 2098-2108q 40A:9<2098-2108x 1073-5623
773t Metallurgical and Materials Transactions Ad : Springer Science and Business Media LLCg 40A:9, s. 2098-2108q 40A:9<2098-2108x 1543-1940
856u http://dx.doi.org/10.1007/s11661-009-9915-0y FULLTEXT
8564 8u https://lup.lub.lu.se/record/1477213
8564 8u https://doi.org/10.1007/s11661-009-9915-0

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