EFFECTS OF TEMPERATURE AND STRAIN AMPLITUDE ON LOW-CYCLE FATIGUE PROPERTIES OF NICKEL-BASED SINGLE-CRYSTAL SUPERALLOY DD419
文献类型：期刊论文
| 作者 | Du, Xiaoming1; Dong, Weiye1; Zhu, Xiang1; Liu, Jide2; Wang, Zhijun3; Li, Tianfu3 |
| 刊名 | MATERIALI IN TEHNOLOGIJE
 |
| 出版日期 | 2024 |
| 卷号 | 58期号:5页码:567-575 |
| 关键词 | nickel-based single-crystal superalloy low-cycle fatigue temperature strain |
| ISSN号 | 1580-2949 |
| DOI | 10.17222/mit.2024.1169 |
| 通讯作者 | Du, Xiaoming(du511@163.com) |
| 英文摘要 | High-temperature and low-cycle fatigue tests were conducted on a nickel-based single-crystal superalloy DD419 under total strain-controlled conditions at 760 degrees C and 980 degrees C. The fatigue properties of the alloy are discussed by analysing the fatigue test data. Fracture morphology and dislocation structure were observed using scanning electron microscopy and transmission electron microscopy. At the same strain amplitude, the results indicate that the plastic deformation of the alloy is larger at 980 degrees C compared to 760 degrees C. This leads to a lower fatigue strength and shorter fatigue life, along with more severe damage. The value of the strain amplitude affects the cyclic stress response behaviour of the alloy. Under low strain amplitudes, the cyclic stress response behaviour differs between 760 degrees C and 980 degrees C. The hysteresis loop exhibits similar shapes at 760 degrees C and 980 degrees C, with an increase in the area as the strain amplitude rises. The fatigue fracture analysis indicates that micropores on the surface are the primary fatigue sources at 760 degrees C, while oxides on the surface are the main fatigue source at 980 degrees C, leading to cracking due to multiple sources. Moreover, transmission electron microscopy reveals that the deformation mechanism involving dislocations at 760 degrees C primarily occurs through plane slip and wave slip, whereas at 980 degrees C, dislocations mainly move through cross slip and climb. |
| 资助项目 | Liaoning Provincial Applied Basic Research Project[2023JH2/101300233] ; National Natural Science Foundation of China[12375305] ; Basic Research Projects of Higher Education Institutions in Liaoning Province[JYTZD20230004] ; Basic Research Projects of Higher Education Institutions in Liaoning Province[JYTMS20230193] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001339304000004 |
| 出版者 | INST ZA KOVINSKE MATERIALE I IN TEHNOLOGIE |
| 资助机构 | Liaoning Provincial Applied Basic Research Project ; National Natural Science Foundation of China ; Basic Research Projects of Higher Education Institutions in Liaoning Province |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Du, Xiaoming |
| 作者单位 | 1.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.China Inst Atom Energy, Beijing 102413, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Xiaoming,Dong, Weiye,Zhu, Xiang,et al. EFFECTS OF TEMPERATURE AND STRAIN AMPLITUDE ON LOW-CYCLE FATIGUE PROPERTIES OF NICKEL-BASED SINGLE-CRYSTAL SUPERALLOY DD419[J]. MATERIALI IN TEHNOLOGIJE,2024,58(5):567-575. |
| APA | Du, Xiaoming,Dong, Weiye,Zhu, Xiang,Liu, Jide,Wang, Zhijun,&Li, Tianfu.(2024).EFFECTS OF TEMPERATURE AND STRAIN AMPLITUDE ON LOW-CYCLE FATIGUE PROPERTIES OF NICKEL-BASED SINGLE-CRYSTAL SUPERALLOY DD419.MATERIALI IN TEHNOLOGIJE,58(5),567-575. |
| MLA | Du, Xiaoming,et al."EFFECTS OF TEMPERATURE AND STRAIN AMPLITUDE ON LOW-CYCLE FATIGUE PROPERTIES OF NICKEL-BASED SINGLE-CRYSTAL SUPERALLOY DD419".MATERIALI IN TEHNOLOGIJE 58.5(2024):567-575. |
入库方式： OAI收割
来源：金属研究所
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