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Stress relaxation r...
Stress relaxation resistance for improved fatigue performance of shot peened tool components
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- Medvedeva, Anna, 1981- (author)
- Karlstads universitet,Avdelningen för maskin- och materialteknik
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- Bergström, Jens, 1954- (author)
- Karlstads universitet,Avdelningen för maskin- och materialteknik
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- Gunnarsson, Staffan (author)
- Research and Development, Uddeholm Tooling AB
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- Höglund, Dan (author)
- Materials and Process Engineering, AB Sandvik Coromant
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(creator_code:org_t)
- Tokyo : Academy Common Meiji University, 2008
- 2008
- English.
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In: Proceedings of the 10<sup>th</sup> International Conference on Shot Peening, 15-18 September, Tokyo, Japan, 2008. - Tokyo : Academy Common Meiji University. ; , s. 286-295
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- Shot peening is an extensively used process in the production of mechanical components to improve their fatigue strength at ambient temperature. At higher working temperatures of some mechanical components, e.g. from 300 to 600°C, the influence and behaviour of the compressive residual stresses are more uncertain, since they tend to relieve at higher temperatures. The response to shot peening induced residual stresses of low alloyed and hot work tool steels was evaluated with respect to stress relief heat treatments and isothermal high temperature fatigue testing. Not only the residual stresses, but also the material substructure and its dislocation characteristics are of importance. Dislocation structures were determined using X-ray diffraction to explain the preference of the different steel grades. Also, results obtained from bending fatigue testing at ambient temperature of tool components after shot peening and stress relief heat treatments demonstrated the different ability of retaining the fatigue strength.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- shot peening
- fatigue strength
- isothermal fatigue
- residual stress
- stress relaxation
- Materials science
- Teknisk materialvetenskap
- Materialteknik
- Materials Engineering
Publication and Content Type
- ref (subject category)
- kon (subject category)
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