Hardening effect of multi-energy(W2+)-ion irradiation on tungsten-potassium alloy*
文献类型：期刊论文
| 作者 | Song, Yang-Yi-Peng1; Qiu, Wen-Bin1; Chen, Long-Qing1; Yang, Xiao-Liang1; Deng, Hao1; Liu, Chang-Song2; Zhang, Kun1; Tang, Jun1 |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 29 |
| ISSN号 | 1674-1056 |
| 关键词 | plasma facing material tungsten-potassium alloy ion-irradiation hardening nanoindentation |
| DOI | 10.1088/1674-1056/ab9c09 |
| 通讯作者 | Zhang, Kun(kzhang@scu.edu.cn) ; Tang, Jun(tangjun@scu.edu.cn) |
| 英文摘要 | Tungsten is one of the most promising plasma-facing materials (PFMs) to be used in the nuclear fusion reactor as divertor material in the future. In this work, W2+-ions bombardment is used to simulate the neutron irradiation damage to commercial pure tungsten (W) and rolled tungsten-potassium (W-K). The 7 MeV of 3 x 10(15)W(2+)-ions/cm(2), 3 MeV of 4.5 x 10(14)W(2+), and 2 MeV of 3 x 10(14)W(2+)-ions/cm(2)are applied at 923 K in sequence to produce a uniform region of 100 nm-400 nm beneath the sample surface with the maximum damage value of 11.5 dpa. Nanoindentation is used to inspect the changes in hardness and elastic modulus after self-ion irradiation. Irradiation hardening occurred in both materials. The irradiation hardening of rolled W-K is affected by two factors: one is the absorption of vacancies and interstitial atoms by potassium bubbles, and the other is the interaction between potassium bubbles and dislocations. Under the condition of 11.5 dpa, the capability of defect absorption can reach a threshold. As a result, dislocations finally dominate the hardening of rolled W-K. Specific features of dislocation loops in W-K are further observed by transmission electron microscopy (TEM) to explain the hardening effect. This work might provide valuable enlightenment for W-K alloy as a promising plasma facing material candidate. |
| WOS关键词 | THERMAL-SHOCK BEHAVIOR ; ATOM-PROBE TOMOGRAPHY ; HEAVY-ION IRRADIATION ; NEUTRON-IRRADIATION ; W-RE ; NANOINDENTATION ; MICROSTRUCTURE ; TEMPERATURE ; DAMAGE ; EVOLUTION |
| 资助项目 | National Natural Science Foundation of China[11975160] ; National Natural Science Foundation of China[11775149] ; Fundamental Research Funds for the Central Universities, China |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000577773400001 |
| 资助机构 | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities, China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/104645]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang, Kun; Tang, Jun |
| 作者单位 | 1.Sichuan Univ, Inst Nucl Sci & Technol, Minist Educ, Key Lab Radiat Phys & Technol, Chengdu 610064, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Yang-Yi-Peng,Qiu, Wen-Bin,Chen, Long-Qing,et al. Hardening effect of multi-energy(W2+)-ion irradiation on tungsten-potassium alloy*[J]. CHINESE PHYSICS B,2020,29. |
| APA | Song, Yang-Yi-Peng.,Qiu, Wen-Bin.,Chen, Long-Qing.,Yang, Xiao-Liang.,Deng, Hao.,...&Tang, Jun.(2020).Hardening effect of multi-energy(W2+)-ion irradiation on tungsten-potassium alloy*.CHINESE PHYSICS B,29. |
| MLA | Song, Yang-Yi-Peng,et al."Hardening effect of multi-energy(W2+)-ion irradiation on tungsten-potassium alloy*".CHINESE PHYSICS B 29(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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