Study on creep-fatigue life of ODS-Cu as heat sink in divertor PFU
文献类型：期刊论文
| 作者 | Zhang, Feng2; Liu, Peng1; Wang, Guodong2; Cao, Qing2; Mao, Xin1; Peng, Xuebing1 ; Zhang, Liming1; Chen, Changqi2
|
| 刊名 | FUSION ENGINEERING AND DESIGN
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 196 |
| ISSN号 | 0920-3796 |
| 关键词 | Divertor ODS-Cu Heat sink Creep-fatigue damage Stress relaxation |
| DOI | 10.1016/j.fusengdes.2023.114011 |
| 通讯作者 | Liu, Peng(liupeng@ipp.ac.cn) |
| 英文摘要 | In fusion devices, the actively cooled W-monoblocks of the PFUs (Plasma Facing Units) are installed in the divertor to protect the vacuum vessel and magnets against neutron flux in the bottom region of the vessel. Copper alloy is considered to be the ideal heat sink material due to its high thermal conductivity and sufficient mechanical strength, in which ODS (oxide dispersion-strengthened)-Cu is selected as a candidate. With the increasing of operating parameters, such as higher heat flux (-20 MW/m2, H-mode) and longer pulse (up to 2.00 h) in EU-DEMO [1], the heat sink structure will undergo thermal creep induced by high temperature, stress and long holding time, which accelerates fatigue failure and could potentially be a very critical issue for the long-term safe operation of the fusion reactor. In this paper, an ITER-like monoblock with ODS-Cu as heat sink was studied for its creep fatigue life under DEMO operation conditions. The temperature distribution and stress/strain results of ODS-Cu were determined using finite element analysis. The investigation shows that high temperature creep occurs at the heat sink. Based on a damage accumulation model, the predicted life of the PFUs for the divertor are investigated at different operating modes. The analysis provides theoretical feasibility for selecting ODS-Cu as a heat sink material. The effect of stress relaxation on creep behavior during thermal stress cycle was also demonstrated and this was compared with the same for CuCrZr. |
| WOS关键词 | COPPER ; DESIGN ; BEHAVIOR ; ALLOYS ; ITER |
| 资助项目 | Anhui Provincial Natural Science Foundation[2208085QA21] ; Anhui Provincial Natural Science Foundation[2208085J49] ; China Postdoctoral Science Foundation[2022M713189] |
| WOS研究方向 | Nuclear Science & Technology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:001080235500001 |
| 资助机构 | Anhui Provincial Natural Science Foundation ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/133505]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Liu, Peng |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Hefei Univ Technol, Sch Mech Engn, Hefei 230009, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Feng,Liu, Peng,Wang, Guodong,et al. Study on creep-fatigue life of ODS-Cu as heat sink in divertor PFU[J]. FUSION ENGINEERING AND DESIGN,2023,196. |
| APA | Zhang, Feng.,Liu, Peng.,Wang, Guodong.,Cao, Qing.,Mao, Xin.,...&Chen, Changqi.(2023).Study on creep-fatigue life of ODS-Cu as heat sink in divertor PFU.FUSION ENGINEERING AND DESIGN,196. |
| MLA | Zhang, Feng,et al."Study on creep-fatigue life of ODS-Cu as heat sink in divertor PFU".FUSION ENGINEERING AND DESIGN 196(2023). |
入库方式： OAI收割
来源：合肥物质科学研究院
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