High-temperature tensile and thermal shock characterization of low-temperature rolled tungsten
A developed tungsten (W) grade was prepared by powder metallurgy technology plus multi-step low-temperature rolling. The relative density, thermal conductivity, microstructure, tensile properties of original and high-temperature annealed states, micro-hardness and transient thermal shock resistance...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Nuclear Materials and Energy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179122002344 |
| _version_ | 1811154374383108096 |
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| author | Xiaolei Ma Xiaoxin Zhang Fan Feng Ting Wang Xiang Liu Jianbao Wang Wei Lv Shaoting Lang Changchun Ge Qingzhi Yan |
| author_facet | Xiaolei Ma Xiaoxin Zhang Fan Feng Ting Wang Xiang Liu Jianbao Wang Wei Lv Shaoting Lang Changchun Ge Qingzhi Yan |
| author_sort | Xiaolei Ma |
| collection | DOAJ |
| description | A developed tungsten (W) grade was prepared by powder metallurgy technology plus multi-step low-temperature rolling. The relative density, thermal conductivity, microstructure, tensile properties of original and high-temperature annealed states, micro-hardness and transient thermal shock resistance were characterized. The results of tensile test with a strain rate of 2 × 10-4 s−1 show that the ductile–brittle transition temperature (DBTT) of rolled-W in the original and recrystallized state are 150–200 °C and 250–300 °C, respectively. The rolled-W presents high strength and great plasticity simultaneously. For example, the maximum ultimate tensile strength (UTS) below DBTT is as high as ∼ 1189 MPa, and the maximum total elongation (TE) above DBTT reaches 28.9 %. In particular, the TE of recrystallized W achieves an incredible 81.4 % at 500 °C, which is the highest value among all the published literatures so far. The results of transient thermal shock tests indicate that the rolled-W has an outstanding transient thermal shock resistance. It can withstand the thermal bombardment at an absorbed power densities (APD) of 0.33 GW·m−2 without causing any surface damages, and still no cracks are observed as the APD rises to 0.88 GW·m−2. Moreover, the failure mechanism of rolled-W was also studied in details. This work plays an important role in establishing a dependable China Fusion Engineering Test Reactor (CFETR) data-library on a unitary W grade, which can provide an effective reference for the identification of material performance under the high heat flux and subsequent numerical simulation. |
| first_indexed | 2024-04-10T04:14:30Z |
| format | Article |
| id | doaj.art-08705cddf8354d238c86a50a021e8ebc |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-10T04:14:30Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-08705cddf8354d238c86a50a021e8ebc2023-03-12T04:21:25ZengElsevierNuclear Materials and Energy2352-17912023-03-0134101353High-temperature tensile and thermal shock characterization of low-temperature rolled tungstenXiaolei Ma0Xiaoxin Zhang1Fan Feng2Ting Wang3Xiang Liu4Jianbao Wang5Wei Lv6Shaoting Lang7Changchun Ge8Qingzhi Yan9Institute of Nuclear Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaInstitute of Nuclear Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; Corresponding authors.Southwestern Institute of Physics, Chengdu, Sichuan 610041, ChinaSchool of Physics, Beihang University, Beijing, 100191, ChinaSouthwestern Institute of Physics, Chengdu, Sichuan 610041, ChinaSouthwestern Institute of Physics, Chengdu, Sichuan 610041, ChinaInstitute for Advanced Materials, North China Electric Power University, Beijing 102206, ChinaMechanical and Electrical Engineering, Xinxiang University, Xinxiang, Henan 453000,ChinaInstitute of Nuclear Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaInstitute of Nuclear Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; Corresponding authors.A developed tungsten (W) grade was prepared by powder metallurgy technology plus multi-step low-temperature rolling. The relative density, thermal conductivity, microstructure, tensile properties of original and high-temperature annealed states, micro-hardness and transient thermal shock resistance were characterized. The results of tensile test with a strain rate of 2 × 10-4 s−1 show that the ductile–brittle transition temperature (DBTT) of rolled-W in the original and recrystallized state are 150–200 °C and 250–300 °C, respectively. The rolled-W presents high strength and great plasticity simultaneously. For example, the maximum ultimate tensile strength (UTS) below DBTT is as high as ∼ 1189 MPa, and the maximum total elongation (TE) above DBTT reaches 28.9 %. In particular, the TE of recrystallized W achieves an incredible 81.4 % at 500 °C, which is the highest value among all the published literatures so far. The results of transient thermal shock tests indicate that the rolled-W has an outstanding transient thermal shock resistance. It can withstand the thermal bombardment at an absorbed power densities (APD) of 0.33 GW·m−2 without causing any surface damages, and still no cracks are observed as the APD rises to 0.88 GW·m−2. Moreover, the failure mechanism of rolled-W was also studied in details. This work plays an important role in establishing a dependable China Fusion Engineering Test Reactor (CFETR) data-library on a unitary W grade, which can provide an effective reference for the identification of material performance under the high heat flux and subsequent numerical simulation.http://www.sciencedirect.com/science/article/pii/S2352179122002344Rolled tungstenMicrostructureMechanical propertiesTransient thermal shock |
| spellingShingle | Xiaolei Ma Xiaoxin Zhang Fan Feng Ting Wang Xiang Liu Jianbao Wang Wei Lv Shaoting Lang Changchun Ge Qingzhi Yan High-temperature tensile and thermal shock characterization of low-temperature rolled tungsten Nuclear Materials and Energy Rolled tungsten Microstructure Mechanical properties Transient thermal shock |
| title | High-temperature tensile and thermal shock characterization of low-temperature rolled tungsten |
| title_full | High-temperature tensile and thermal shock characterization of low-temperature rolled tungsten |
| title_fullStr | High-temperature tensile and thermal shock characterization of low-temperature rolled tungsten |
| title_full_unstemmed | High-temperature tensile and thermal shock characterization of low-temperature rolled tungsten |
| title_short | High-temperature tensile and thermal shock characterization of low-temperature rolled tungsten |
| title_sort | high temperature tensile and thermal shock characterization of low temperature rolled tungsten |
| topic | Rolled tungsten Microstructure Mechanical properties Transient thermal shock |
| url | http://www.sciencedirect.com/science/article/pii/S2352179122002344 |
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