In-situ Neutron Diffraction Study on Work-hardening Behavior in a Ferrite-Martensite Dual Phase Steel
Strength and work-hardening in steels are discussed from the viewpoint of heterogeneous deformation. In-situ neutron diffraction studies made it clear that misfit strains between grains accompanied grain-scaled internal stresses (intergranular stress). In a dual phase steel, the intergranular stress...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Society of Automotive Engineers of Japan, Inc.
2011-10-01
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| Series: | International Journal of Automotive Engineering |
| Online Access: | https://www.jstage.jst.go.jp/article/jsaeijae/2/4/2_20114637/_article/-char/en |
| _version_ | 1797374397967761408 |
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| author | Satoshi Morooka Naoko Sato Mayumi Ojima Stefanus Harjo Yoshitaka Adachi Yo Tomota Osamu Umezawa |
| author_facet | Satoshi Morooka Naoko Sato Mayumi Ojima Stefanus Harjo Yoshitaka Adachi Yo Tomota Osamu Umezawa |
| author_sort | Satoshi Morooka |
| collection | DOAJ |
| description | Strength and work-hardening in steels are discussed from the viewpoint of heterogeneous deformation. In-situ neutron diffraction studies made it clear that misfit strains between grains accompanied grain-scaled internal stresses (intergranular stress). In a dual phase steel, the intergranular stress was superposed on the phase stress. These results show good agreement with the predictions of a simple dual-phase material model: the strong martensite phase yields higher stress than the macro-yield stress, resulting in high strengthening of (ferrite + martensite) dual phase steels. Both long-range internal stress and short-range ones such as forest dislocation hardening may cause resistance to dislocation motion in the steels. Therefore, work-hardening takes place more effectively with higher internal stress and larger volume fraction. |
| first_indexed | 2024-03-08T19:05:14Z |
| format | Article |
| id | doaj.art-edc27ce7b8fe475d9b4b03aeec6d66cd |
| institution | Directory Open Access Journal |
| issn | 2185-0992 |
| language | English |
| last_indexed | 2024-03-08T19:05:14Z |
| publishDate | 2011-10-01 |
| publisher | Society of Automotive Engineers of Japan, Inc. |
| record_format | Article |
| series | International Journal of Automotive Engineering |
| spelling | doaj.art-edc27ce7b8fe475d9b4b03aeec6d66cd2023-12-28T01:43:04ZengSociety of Automotive Engineers of Japan, Inc.International Journal of Automotive Engineering2185-09922011-10-012413113610.20485/jsaeijae.2.4_131In-situ Neutron Diffraction Study on Work-hardening Behavior in a Ferrite-Martensite Dual Phase SteelSatoshi Morooka0Naoko Sato1Mayumi Ojima2Stefanus Harjo3Yoshitaka Adachi4Yo Tomota5Osamu Umezawa6Yokohama National UniversityKyusyu UniversityUniversity of TokyoJapan Atomic Energy AgencyNational Institute for Materials ScienceIbaraki UniversityYokohama National UniversityStrength and work-hardening in steels are discussed from the viewpoint of heterogeneous deformation. In-situ neutron diffraction studies made it clear that misfit strains between grains accompanied grain-scaled internal stresses (intergranular stress). In a dual phase steel, the intergranular stress was superposed on the phase stress. These results show good agreement with the predictions of a simple dual-phase material model: the strong martensite phase yields higher stress than the macro-yield stress, resulting in high strengthening of (ferrite + martensite) dual phase steels. Both long-range internal stress and short-range ones such as forest dislocation hardening may cause resistance to dislocation motion in the steels. Therefore, work-hardening takes place more effectively with higher internal stress and larger volume fraction.https://www.jstage.jst.go.jp/article/jsaeijae/2/4/2_20114637/_article/-char/en |
| spellingShingle | Satoshi Morooka Naoko Sato Mayumi Ojima Stefanus Harjo Yoshitaka Adachi Yo Tomota Osamu Umezawa In-situ Neutron Diffraction Study on Work-hardening Behavior in a Ferrite-Martensite Dual Phase Steel International Journal of Automotive Engineering |
| title | In-situ Neutron Diffraction Study on Work-hardening Behavior in a Ferrite-Martensite Dual Phase Steel |
| title_full | In-situ Neutron Diffraction Study on Work-hardening Behavior in a Ferrite-Martensite Dual Phase Steel |
| title_fullStr | In-situ Neutron Diffraction Study on Work-hardening Behavior in a Ferrite-Martensite Dual Phase Steel |
| title_full_unstemmed | In-situ Neutron Diffraction Study on Work-hardening Behavior in a Ferrite-Martensite Dual Phase Steel |
| title_short | In-situ Neutron Diffraction Study on Work-hardening Behavior in a Ferrite-Martensite Dual Phase Steel |
| title_sort | in situ neutron diffraction study on work hardening behavior in a ferrite martensite dual phase steel |
| url | https://www.jstage.jst.go.jp/article/jsaeijae/2/4/2_20114637/_article/-char/en |
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