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Evaluation of strai...
Evaluation of strain hardening parameters
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- Ding, Zong-Hai (författare)
- KTH,Materialvetenskap
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- Huml, Pavel (författare)
- KTH,Materialvetenskap
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- Yang, W. (författare)
- KTH,Materialvetenskap
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(creator_code:org_t)
- 2004
- 2004
- Engelska.
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Ingår i: Journal of Iron and Steel Research International. - 1006-706X .- 2210-3988. ; 11:4, s. 38-46
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- The plane-strain compression test for three kinds of materials was carried out in a temperature range between room temperature and 400 degreesC. The sigma-epsilon curves and strain-hardening rate at different temperatures were simulated and a reasonable fit to the experimental data was obtained. A modified model created by data inference and computer simulation was developed to describe the strain hardening at a large deformation, and the predicted strain hardening are in a good agreement with that observed in a large range of stress. The influences of different parameters on strain hardening behaviour under large deformation were analysed. The temperature increase within the test temperatures for stainless steel 18/8 Ti results in dropping of flow stress and strain-hardening rate. For favourable gamma-fibre texture to obtain high r, the cold rolling was applied at large reduction. In the experimental procedure, the X-ray diffraction test was carried out to compare the strain hardening and microstructure under large deformation for a bcc steel (low carbon steel SS-1142). The results indicate that the high strain-hardening rate possibly occurs when the primary slip plane 110 is parallel to the rolling plane and the strain-hardening rate decreases when lots of 110 plane rotate out from the orientation {110}//RP.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- deformation model
- strain hardening
- strain hardening rate
- dislocation density
- friction
- copper single-crystals
- dislocation arrangement
- density
- stress
- steels
- deformation
- textures
- kinetics
- flow
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- ref (ämneskategori)
- art (ämneskategori)
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