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Surface residual st...
Surface residual stresses in multipass welds produced using low transformation temperature filler alloys
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- Ramjaun, T. (författare)
- University of Cambridge
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- Stone, H. J. (författare)
- Unversity of Cambridge
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- Karlsson, Leif, 1956- (författare)
- Högskolan Väst,Forskningsmiljön produktionsteknik(PTW),PTW, Welding technology
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- Gharghouri, M.A. (författare)
- Canadian Neutron Beam Centre, Chalk River Laboratories, Chalk River, Ont. K0J 1J0, Canada
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- Dalaei, K (författare)
- ESAB AB, Lindholmsalln 9, 417 55 Göteborg
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- Moat, R..J (författare)
- Materials Engineering, The Open University, Milton Keynes MK7 6AA, UK
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- Bhadeshia, H.K.D.H. (författare)
- University of Cambridge
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(creator_code:org_t)
- 2014
- 2014
- Engelska.
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Ingår i: Science and technology of welding and joining. - 1362-1718 .- 1743-2936. ; 19:7, s. 623-630
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Tensile residual stresses at the surface of welded components are known to compromise fatigue resistance through the accelerated initiation of microcracks, especially at the weld toe. Inducement of compression in these regions is a common technique employed to enhance fatigue performance. Transformation plasticity has been established as a viable method to generate such compressive residual stresses in steel welds and exploits the phase transformation in welding filler alloys that transform at low temperature to compensate for accumulated thermal contraction strains. Neutron and X-ray diffraction have been used to determine the stress profiles that exist across the surface of plates welded with low transformation temperature welding alloys, with a particular focus on the stress at the weld toe. For the first time, near surface neutron diffraction data have shown the extent of local stress variation at the critical, fusion boundary location. Compression was evident for the three measurement orientations at the fusion boundaries. Compressive longitudinal residual stresses and tensile transverse stresses were measured in the weld metal.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Nyckelord
- Transformation induced plasticity
- martensite
- residual stress
- welding
- neutron
- X-ray diffraction
- Manufacturing and materials engineering
- Produktions- och materialteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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