Strain-Rate Dependence of Tensile Behavior in Commercial-Grade Tungsten—Effect of Recrystallization Condition
The tensile deformation behavior of double-forged (DF-W) and recrystallized (RX-W) commercial-grade tungsten was investigated at 700 °C. With increasing strain rate, the dominant dynamic recrystallization (DRX) mechanism changes from continuous dynamic recrystallization (CDRX) to discontinuous dynam...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/17/5836 |
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| author | Byeong Seo Kong Ji Ho Shin Taejeong An Changheui Jang Hyoung Chan Kim |
| author_facet | Byeong Seo Kong Ji Ho Shin Taejeong An Changheui Jang Hyoung Chan Kim |
| author_sort | Byeong Seo Kong |
| collection | DOAJ |
| description | The tensile deformation behavior of double-forged (DF-W) and recrystallized (RX-W) commercial-grade tungsten was investigated at 700 °C. With increasing strain rate, the dominant dynamic recrystallization (DRX) mechanism changes from continuous dynamic recrystallization (CDRX) to discontinuous dynamic recrystallization (DDRX). For DF-W, pre-existing sub-grains promote CDRX and associated a high-DRX fraction, resulting in reduced post-necking strain under a static condition. With increasing strain rate, a shift in the restoration mechanism from CDRX to DDRX contributes to the enhanced ductility in DF-W, while RX-W shows enhanced flow hardening without a loss of ductility. These results suggest that the strain-rate dependence of mechanical behavior depends on the initial microstructure. |
| first_indexed | 2024-03-10T01:37:56Z |
| format | Article |
| id | doaj.art-ee4027c8b0e943fa86ab8ed0560d7a06 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:37:56Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-ee4027c8b0e943fa86ab8ed0560d7a062023-11-23T13:31:01ZengMDPI AGMaterials1996-19442022-08-011517583610.3390/ma15175836Strain-Rate Dependence of Tensile Behavior in Commercial-Grade Tungsten—Effect of Recrystallization ConditionByeong Seo Kong0Ji Ho Shin1Taejeong An2Changheui Jang3Hyoung Chan Kim4Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, KoreaDepartment of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, KoreaDepartment of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, KoreaDepartment of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, KoreaKorea Institute of Fusion Energy, 169-148 Gwahak-ro, Daejeon 34133, KoreaThe tensile deformation behavior of double-forged (DF-W) and recrystallized (RX-W) commercial-grade tungsten was investigated at 700 °C. With increasing strain rate, the dominant dynamic recrystallization (DRX) mechanism changes from continuous dynamic recrystallization (CDRX) to discontinuous dynamic recrystallization (DDRX). For DF-W, pre-existing sub-grains promote CDRX and associated a high-DRX fraction, resulting in reduced post-necking strain under a static condition. With increasing strain rate, a shift in the restoration mechanism from CDRX to DDRX contributes to the enhanced ductility in DF-W, while RX-W shows enhanced flow hardening without a loss of ductility. These results suggest that the strain-rate dependence of mechanical behavior depends on the initial microstructure.https://www.mdpi.com/1996-1944/15/17/5836tungstenstrain raterecrystallizationtensile deformationdynamic recrystallization |
| spellingShingle | Byeong Seo Kong Ji Ho Shin Taejeong An Changheui Jang Hyoung Chan Kim Strain-Rate Dependence of Tensile Behavior in Commercial-Grade Tungsten—Effect of Recrystallization Condition Materials tungsten strain rate recrystallization tensile deformation dynamic recrystallization |
| title | Strain-Rate Dependence of Tensile Behavior in Commercial-Grade Tungsten—Effect of Recrystallization Condition |
| title_full | Strain-Rate Dependence of Tensile Behavior in Commercial-Grade Tungsten—Effect of Recrystallization Condition |
| title_fullStr | Strain-Rate Dependence of Tensile Behavior in Commercial-Grade Tungsten—Effect of Recrystallization Condition |
| title_full_unstemmed | Strain-Rate Dependence of Tensile Behavior in Commercial-Grade Tungsten—Effect of Recrystallization Condition |
| title_short | Strain-Rate Dependence of Tensile Behavior in Commercial-Grade Tungsten—Effect of Recrystallization Condition |
| title_sort | strain rate dependence of tensile behavior in commercial grade tungsten effect of recrystallization condition |
| topic | tungsten strain rate recrystallization tensile deformation dynamic recrystallization |
| url | https://www.mdpi.com/1996-1944/15/17/5836 |
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