| Fatigue behavior of uncoated and MCrAlY-coated DS nickel-based superalloys pre-exposed in hot corrosion condition | |
| Alternative Title | Fatigue behavior of uncoated and MCrAlY-coated DS nickelbased superalloys pre-exposed in hot corrosion condition |
| Qi HongYu1; Yang JiShen1; Yang XiaoGuang1; Li ShaoLin1; Ma LiQiang4 | |
| 2018 | |
| Source Publication | RARE METALS
 |
| ISSN | 1001-0521 |
| Volume | 37Issue:11Pages:936-941 |
| Abstract | The effects of a MCrAlY coating on low-cycle fatigue (LCF) behavior of directionally solidified (DS) nickle-based superalloy DZ125 were investigated. Before the fatigue testings, the specimens were pre-exposed in high-temperature hot corrosion (HTHC) environment generating by a burner rig at 850 degrees C. The results show that the coating in hot corrosion condition has beneficial effects on the fatigue resistance of superalloy. Under corrosion condition, the MCrAlY-coated specimens tested have higher fatigue lives than the uncoated specimens at the same stress level. The coating failure results from fatigue process and numerous fatigue cracks were nucleated at the specimen surface, only one main crack propagates inward and the secondary cracks away from the fracture surface are perpendicular to the loading orientation. |
| Other Abstract | The effects of a MCrAlY coating on low-cycle fatigue (LCF) behavior of directionally solidified (DS) nickle-based superalloy DZ125 were investigated. Before the fatigue testings, the specimens were pre-exposed in high-temperature hot corrosion (HTHC) environment generating by a burner rig at 850 ℃. The results show that the coating in hot corrosion condition has beneficial effects on the fatigue resistance of superalloy. Under corrosion condition, the MCrAlY-coated specimens tested have higher fatigue lives than the uncoated specimens at the same stress level. The coating failure results from fatigue process and numerous fatigue cracks were nucleated at the specimen surface, only one main crack propagates inward and the secondary cracks away from the fracture surface are perpendicular to the loading orientation. |
| Keyword | TEMPERATURE PROTECTIVE-COATINGS GAS-TURBINE BLADE THERMOMECHANICAL FATIGUE MECHANICAL-PROPERTIES DEGREES-C ALLOY OXIDATION MCrAlY coating Low-cycle fatigue Directionally solidified Ni-based superalloy Hot corrosion Prior exposure |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [National Basic Research Program of China] ; [National Natural Science Foundation of China] |
| CSCD ID | CSCD:6391138 |
| Citation statistics |
Cited Times:2[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/142092 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.北京航空航天大学 2.Collaborat Innovat Ctr Adv Aeroengine, Beijing 100191, Peoples R China 3.Beijing Key Lab Aeroengine Struct & Strength, Beijing 100191, Peoples R China 4.中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Qi HongYu,Yang JiShen,Yang XiaoGuang,et al. Fatigue behavior of uncoated and MCrAlY-coated DS nickel-based superalloys pre-exposed in hot corrosion condition[J]. RARE METALS,2018,37(11):936-941. |
| APA | Qi HongYu,Yang JiShen,Yang XiaoGuang,Li ShaoLin,&Ma LiQiang.(2018).Fatigue behavior of uncoated and MCrAlY-coated DS nickel-based superalloys pre-exposed in hot corrosion condition.RARE METALS,37(11),936-941. |
| MLA | Qi HongYu,et al."Fatigue behavior of uncoated and MCrAlY-coated DS nickel-based superalloys pre-exposed in hot corrosion condition".RARE METALS 37.11(2018):936-941. |
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