Oxygen changes crack modes of Ni-based single crystal superalloy
Oxygen-affected cracking commonly presents on thin Ni-based single crystal superalloy components serving in high temperature and oxidizing environments. This study uses a newly developed in-situ thermal-stress environmental transmission electron microscope to investigate the oxidation and fracture b...
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Taylor & Francis Group
2021
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oai:doaj.org-article:f9edc0eaf46b44c68e856d679c6764be2021-11-04T15:51:55ZOxygen changes crack modes of Ni-based single crystal superalloy2166-383110.1080/21663831.2021.1993367https://doaj.org/article/f9edc0eaf46b44c68e856d679c6764be2021-12-01T00:00:00Zhttp://dx.doi.org/10.1080/21663831.2021.1993367https://doaj.org/toc/2166-3831Oxygen-affected cracking commonly presents on thin Ni-based single crystal superalloy components serving in high temperature and oxidizing environments. This study uses a newly developed in-situ thermal-stress environmental transmission electron microscope to investigate the oxidation and fracture behaviors of Ni-based single crystal superalloy at 650°C under stress. The in-situ oxidation was found to change the tensile fracture mode from the close-packed {111} planes of plastic fracture to $ \{001\} $ planes adjacent to γ/γ′ interfaces of brittle fracture. The microanalysis also revealed that the γ′ cuboids, γ phase, and γ/γ interface exhibit different oxidation behavior, thus underscoring the thickness debit effect.Xueqiao LiYinong LiuYunsong ZhaoYanhui ChenAng LiJianfei ZhangYadi ZhaiZhipeng LiDongfeng MaXiaochen LiQing ZhangXiaomeng YangHaibo LongShengcheng MaoZe ZhangXiaodong HanTaylor & Francis Grouparticleni-based superalloysoxidationenvironment-assisted crackingin-situ transmission electron microscopyMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials Research Letters, Vol 9, Iss 12, Pp 531-539 (2021) |
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DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
ni-based superalloys oxidation environment-assisted cracking in-situ transmission electron microscopy Materials of engineering and construction. Mechanics of materials TA401-492 |
| spellingShingle |
ni-based superalloys oxidation environment-assisted cracking in-situ transmission electron microscopy Materials of engineering and construction. Mechanics of materials TA401-492 Xueqiao Li Yinong Liu Yunsong Zhao Yanhui Chen Ang Li Jianfei Zhang Yadi Zhai Zhipeng Li Dongfeng Ma Xiaochen Li Qing Zhang Xiaomeng Yang Haibo Long Shengcheng Mao Ze Zhang Xiaodong Han Oxygen changes crack modes of Ni-based single crystal superalloy |
| description |
Oxygen-affected cracking commonly presents on thin Ni-based single crystal superalloy components serving in high temperature and oxidizing environments. This study uses a newly developed in-situ thermal-stress environmental transmission electron microscope to investigate the oxidation and fracture behaviors of Ni-based single crystal superalloy at 650°C under stress. The in-situ oxidation was found to change the tensile fracture mode from the close-packed {111} planes of plastic fracture to $ \{001\} $ planes adjacent to γ/γ′ interfaces of brittle fracture. The microanalysis also revealed that the γ′ cuboids, γ phase, and γ/γ interface exhibit different oxidation behavior, thus underscoring the thickness debit effect. |
| format |
article |
| author |
Xueqiao Li Yinong Liu Yunsong Zhao Yanhui Chen Ang Li Jianfei Zhang Yadi Zhai Zhipeng Li Dongfeng Ma Xiaochen Li Qing Zhang Xiaomeng Yang Haibo Long Shengcheng Mao Ze Zhang Xiaodong Han |
| author_facet |
Xueqiao Li Yinong Liu Yunsong Zhao Yanhui Chen Ang Li Jianfei Zhang Yadi Zhai Zhipeng Li Dongfeng Ma Xiaochen Li Qing Zhang Xiaomeng Yang Haibo Long Shengcheng Mao Ze Zhang Xiaodong Han |
| author_sort |
Xueqiao Li |
| title |
Oxygen changes crack modes of Ni-based single crystal superalloy |
| title_short |
Oxygen changes crack modes of Ni-based single crystal superalloy |
| title_full |
Oxygen changes crack modes of Ni-based single crystal superalloy |
| title_fullStr |
Oxygen changes crack modes of Ni-based single crystal superalloy |
| title_full_unstemmed |
Oxygen changes crack modes of Ni-based single crystal superalloy |
| title_sort |
oxygen changes crack modes of ni-based single crystal superalloy |
| publisher |
Taylor & Francis Group |
| publishDate |
2021 |
| url |
https://doaj.org/article/f9edc0eaf46b44c68e856d679c6764be |
| work_keys_str_mv |
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1718444751419604992 |