Internal Friction on AISI 304 Stainless Steels with Low Tensile Deformations at Temperatures between −50 and 20C
Austenitic stainless steels specimens were deformed by tension in temperatures in the range of −50C to 20 C and 0.03 to 0.12 true strain, in order to obtain different volumetric fractions of ε (hexagonal close packed) and α′ (body centered cubic) strain induced martensites. The morphology, dist...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2010/326736 |
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| author | T. F. A. Santos M. S. Andrade |
| author_facet | T. F. A. Santos M. S. Andrade |
| author_sort | T. F. A. Santos |
| collection | DOAJ |
| description | Austenitic stainless steels specimens were deformed by tension in temperatures in the range of −50C to 20 C and 0.03 to 0.12 true strain, in order to obtain different volumetric fractions of
ε (hexagonal close packed) and α′ (body centered cubic) strain induced martensites. The morphology, distribution and volumetric fractions of the martensites were characterized by metallography and dilatometry analysis and quantified by ferrite detector measurements. The damping behavior of specimens with different volumetric fractions of martensites was studied in an inverted torsion pendulum in the 40C to 400C range. The ε- and α′-martensites reversion was observed in the temperature range of 50C–200C and 500C–800C, respectively, by dilatometry. Internal friction curves in function of temperature of the deformed samples presented internal friction peaks. The first internal friction peak is related to sum of the amount of ε- and α′-martensites. For low deformations it aligns around 130C and it is related only to the ε→γ reverse transformation. The peak situated around 350C increases with the specimen degree of deformation and is, probably, related to the presence of
α′/γ interfaces, and deformed austenite. |
| format | Article |
| id | doaj-art-65ac6a483d524ee4a6330a84cae2df35 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
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| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-65ac6a483d524ee4a6330a84cae2df352025-02-03T05:45:14ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422010-01-01201010.1155/2010/326736326736Internal Friction on AISI 304 Stainless Steels with Low Tensile Deformations at Temperatures between −50 and 20CT. F. A. Santos0M. S. Andrade1Departamento de Engenharia de Materiais, Universidade Estadual de Campinas (Unicamp), C.P. 6122, 13083-970 Campinas, SP, BrazilSetor de Tecnologia Metalúrgica, Fundação Centro Tecnológico de Minas Gerais (CETEC), Avenida José Cândido da Silveira, 2000, 31170-000 Belo Horizonte, MG, BrazilAustenitic stainless steels specimens were deformed by tension in temperatures in the range of −50C to 20 C and 0.03 to 0.12 true strain, in order to obtain different volumetric fractions of ε (hexagonal close packed) and α′ (body centered cubic) strain induced martensites. The morphology, distribution and volumetric fractions of the martensites were characterized by metallography and dilatometry analysis and quantified by ferrite detector measurements. The damping behavior of specimens with different volumetric fractions of martensites was studied in an inverted torsion pendulum in the 40C to 400C range. The ε- and α′-martensites reversion was observed in the temperature range of 50C–200C and 500C–800C, respectively, by dilatometry. Internal friction curves in function of temperature of the deformed samples presented internal friction peaks. The first internal friction peak is related to sum of the amount of ε- and α′-martensites. For low deformations it aligns around 130C and it is related only to the ε→γ reverse transformation. The peak situated around 350C increases with the specimen degree of deformation and is, probably, related to the presence of α′/γ interfaces, and deformed austenite.http://dx.doi.org/10.1155/2010/326736 |
| spellingShingle | T. F. A. Santos M. S. Andrade Internal Friction on AISI 304 Stainless Steels with Low Tensile Deformations at Temperatures between −50 and 20C Advances in Materials Science and Engineering |
| title | Internal Friction on AISI 304 Stainless Steels with Low Tensile Deformations at Temperatures between −50 and 20C |
| title_full | Internal Friction on AISI 304 Stainless Steels with Low Tensile Deformations at Temperatures between −50 and 20C |
| title_fullStr | Internal Friction on AISI 304 Stainless Steels with Low Tensile Deformations at Temperatures between −50 and 20C |
| title_full_unstemmed | Internal Friction on AISI 304 Stainless Steels with Low Tensile Deformations at Temperatures between −50 and 20C |
| title_short | Internal Friction on AISI 304 Stainless Steels with Low Tensile Deformations at Temperatures between −50 and 20C |
| title_sort | internal friction on aisi 304 stainless steels with low tensile deformations at temperatures between 50 and 20c |
| url | http://dx.doi.org/10.1155/2010/326736 |
| work_keys_str_mv | AT tfasantos internalfrictiononaisi304stainlesssteelswithlowtensiledeformationsattemperaturesbetween50and20c AT msandrade internalfrictiononaisi304stainlesssteelswithlowtensiledeformationsattemperaturesbetween50and20c |