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Evaluation of strain hardening parameters
KTH, Superseded Departments, Materials Science and Engineering.
KTH, Superseded Departments, Materials Science and Engineering.
KTH, Superseded Departments, Materials Science and Engineering.
2004 (English)In: Journal of Iron and Steel Research International, ISSN 1006-706X, E-ISSN 2210-3988, Vol. 11, no 4, 38-46 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2004. Vol. 11, no 4, 38-46 p.
Keyword [en]
deformation model, strain hardening, strain hardening rate, dislocation density, friction, copper single-crystals, dislocation arrangement, density, stress, steels, deformation, textures, kinetics, flow
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-23817ISI: 000224541700008Scopus ID: 2-s2.0-5544278906OAI: oai:DiVA.org:kth-23817DiVA: diva2:342516
Note

QC 20100525 QC 20111101

Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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CiteExportLink to record
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  • apa
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