Simple constitutive analysis of AA 7075-T6 aluminium alloy deformed at low deformation temperatures
The tensile stress–strain behaviour of AA 7075-T6 aluminium alloy deformed at temperatures in the range of 123–248 K, at strain rates between 0.0023 and 0.21 s-1 has been analysed in order to develop a rational constitutive description of the material under such deformation conditions. The constitut...
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2012
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| Acceso en liña: | http://hdl.handle.net/10872/4980 |
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| _version_ | 1870622071442112512 |
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| bitstream.checksum.fl_str_mv | d92eb2c64e924a2b5229ea21a5181b39 8a4605be74aa9ea9d79846c1fba20a33 |
| bitstream.checksumAlgorithm.fl_str_mv | MD5 MD5 |
| bitstream.url.fl_str_mv | https://saber.ucv.ve/jspui/bitstream/10872/4980/1/Puchi-Cabrera%20et%20al%20%28MST%29%202012.pdf https://saber.ucv.ve/jspui/bitstream/10872/4980/2/license.txt |
| dc.contributor.author.none.fl_str_mv | Puchi-Cabrera, E.S. Staia, M.H. Ochoa-Pérez, E. La Barbera-Sosa, J.G. Santana, Y.Y. Villalobos-Gutiérrez, C. Picón-Chaparro, J.R. |
| dc.creator.fl_str_mv | Puchi-Cabrera, E.S. Staia, M.H. Ochoa-Pérez, E. La Barbera-Sosa, J.G. Santana, Y.Y. Villalobos-Gutiérrez, C. Picón-Chaparro, J.R. |
| dc.date.accessioned.none.fl_str_mv | 2013-11-20T22:07:29Z |
| dc.date.available.none.fl_str_mv | 2013-11-20T22:07:29Z |
| dc.date.issued.none.fl_str_mv | 2012 |
| dc.identifier.citation.es_VE.fl_str_mv | DOI 10.1179/1743284711Y.0000000102 |
| dc.identifier.issn.none.fl_str_mv | 0267-0836 |
| dc.identifier.uri.none.fl_str_mv | http://hdl.handle.net/10872/4980 |
| dc.language.iso.es_VE.fl_str_mv | en |
| dc.publisher.es_VE.fl_str_mv | Maney Publishing |
| dc.relation.ispartofseries.none.fl_str_mv | Materials Science and Technology;28 (6) |
| dc.subject.es_VE.fl_str_mv | Constitutive description AA 7075-T6 aluminium alloy Low deformation temperatures |
| dc.title.es_VE.fl_str_mv | Simple constitutive analysis of AA 7075-T6 aluminium alloy deformed at low deformation temperatures |
| dc.type.es_VE.fl_str_mv | Article |
| description | The tensile stress–strain behaviour of AA 7075-T6 aluminium alloy deformed at temperatures in the range of 123–248 K, at strain rates between 0.0023 and 0.21 s-1 has been analysed in order to develop a rational constitutive description of the material under such deformation conditions. The constitutive formulation has been derived on the basis of the mechanical threshold stress model developed at Los Alamos National Laboratory. The constitutive equation thus proposed is able to separate the contribution of the different components that give rise to the mechanical strength of the alloy. It has been determined that the flow stress of the material arises mainly from the contribution of three different components: athermal barriers to dislocation motion, solid solution and precipitation hardening and work hardening (dislocation–dislocation interaction). The flow stress in each strain increment during the course of plastic deformation is computed recursively from its previous value, before the updating of the deformation temperature and strain rate values. Such a computation is carried out by the numerical integration of the phenomenological work hardening law expressed in differential form. The constitutive description thus proposed provides an accurate prediction of the experimental values of both the flow stress and work hardening rate of the material. Moreover, its formulation in differential form provides a reasonable description of the stress changes that could take place when arbitrary temperatures and strain rate paths are imposed to the material during plastic deformation. It is shown that the formulation is general enough for describing also the constitutive behaviour and stress changes of a different aluminium alloy deformed under hot working conditions, where the material exhibits positive work hardening before achieving saturation at large strains. |
| id | SABERUCV_f3bdc09bab5ecadfa14ca5808c79decd |
| identifier_str_mv | DOI 10.1179/1743284711Y.0000000102 0267-0836 |
| language_invalid_str_mv | en |
| network_acronym_str | SABERUCV |
| network_name_str | Repositorio Institucional de la Universidad Central de Venezuela |
| oai_identifier_str | oai:saber.ucv.ve:10872/4980 |
| publishDate | 2012 |
| publishDateSort | 2012 |
| repository.mail.fl_str_mv | sfwrussians@gmail.com |
| repository.name.fl_str_mv | Saber UCV |
| repository_id_str | |
| spelling | Puchi-Cabrera, E.S.Staia, M.H.Ochoa-Pérez, E.La Barbera-Sosa, J.G.Santana, Y.Y.Villalobos-Gutiérrez, C.Picón-Chaparro, J.R.2013-11-20T22:07:29Z2013-11-20T22:07:29Z2012DOI 10.1179/1743284711Y.00000001020267-0836http://hdl.handle.net/10872/4980The tensile stress–strain behaviour of AA 7075-T6 aluminium alloy deformed at temperatures in the range of 123–248 K, at strain rates between 0.0023 and 0.21 s-1 has been analysed in order to develop a rational constitutive description of the material under such deformation conditions. The constitutive formulation has been derived on the basis of the mechanical threshold stress model developed at Los Alamos National Laboratory. The constitutive equation thus proposed is able to separate the contribution of the different components that give rise to the mechanical strength of the alloy. It has been determined that the flow stress of the material arises mainly from the contribution of three different components: athermal barriers to dislocation motion, solid solution and precipitation hardening and work hardening (dislocation–dislocation interaction). The flow stress in each strain increment during the course of plastic deformation is computed recursively from its previous value, before the updating of the deformation temperature and strain rate values. Such a computation is carried out by the numerical integration of the phenomenological work hardening law expressed in differential form. The constitutive description thus proposed provides an accurate prediction of the experimental values of both the flow stress and work hardening rate of the material. Moreover, its formulation in differential form provides a reasonable description of the stress changes that could take place when arbitrary temperatures and strain rate paths are imposed to the material during plastic deformation. It is shown that the formulation is general enough for describing also the constitutive behaviour and stress changes of a different aluminium alloy deformed under hot working conditions, where the material exhibits positive work hardening before achieving saturation at large strains.The present investigation has been conducted with the financial support of the Scientific and Humanistic Development Council of the Universidad Central de Venezuela (CDCH-UCV) through the project PG-08-7775-2009/1.enManey PublishingMaterials Science and Technology;28 (6)Constitutive descriptionAA 7075-T6 aluminium alloyLow deformation temperaturesSimple constitutive analysis of AA 7075-T6 aluminium alloy deformed at low deformation temperaturesArticleORIGINALPuchi-Cabrera et al (MST) 2012.pdfPuchi-Cabrera et al (MST) 2012.pdfapplication/pdf43194https://saber.ucv.ve/jspui/bitstream/10872/4980/1/Puchi-Cabrera%20et%20al%20%28MST%29%202012.pdfd92eb2c64e924a2b5229ea21a5181b39MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://saber.ucv.ve/jspui/bitstream/10872/4980/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD5210872/4980oai:saber.ucv.ve:10872/49802013-11-20 22:07:29.386Saber UCVsfwrussians@gmail.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 |
| spellingShingle | Simple constitutive analysis of AA 7075-T6 aluminium alloy deformed at low deformation temperatures Constitutive description AA 7075-T6 aluminium alloy Low deformation temperatures |
| title | Simple constitutive analysis of AA 7075-T6 aluminium alloy deformed at low deformation temperatures |
| title_full | Simple constitutive analysis of AA 7075-T6 aluminium alloy deformed at low deformation temperatures |
| title_fullStr | Simple constitutive analysis of AA 7075-T6 aluminium alloy deformed at low deformation temperatures |
| title_full_unstemmed | Simple constitutive analysis of AA 7075-T6 aluminium alloy deformed at low deformation temperatures |
| title_short | Simple constitutive analysis of AA 7075-T6 aluminium alloy deformed at low deformation temperatures |
| title_sort | Simple constitutive analysis of AA 7075-T6 aluminium alloy deformed at low deformation temperatures |
| topic | Constitutive description AA 7075-T6 aluminium alloy Low deformation temperatures |
| url | http://hdl.handle.net/10872/4980 |