Oxygen changes crack modes of Ni-based single crystal superalloy - 文章详情页

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Scopus SCIE

摘要：

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　degrees　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　gamma/gamma　＇　interfaces　of　brittle　fracture.　The　microanalysis　also　revealed　that　the　gamma　＇　cuboids,　gamma　phase,　and　gamma/gamma　interface　exhibit　different　oxidation　behavior,　thus　underscoring　the　thickness　debit　effect.　[GRAPHICS]　.

关键词：

in-situ transmission electron microscopy oxidation Ni-based superalloys environment-assisted cracking

作者机构：

[ 1 ] [Li, Xueqiao]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 2 ] [Zhao, Yunsong]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 3 ] [Chen, Yanhui]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 4 ] [Li, Ang]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 5 ] [Zhang, Jianfei]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 6 ] [Zhai, Yadi]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 7 ] [Li, Zhipeng]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 8 ] [Ma, Dongfeng]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 9 ] [Li, Xiaochen]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 10 ] [Zhang, Qing]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 11 ] [Yang, Xiaomeng]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 12 ] [Long, Haibo]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 13 ] [Mao, Shengcheng]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 14 ] [Han, Xiaodong]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 15 ] [Liu, Yinong]Univ Western Australia, Dept Mech Engn, Perth, WA, Australia
[ 16 ] [Zhao, Yunsong]Beijing Inst Aeronaut Mat, Sci & Technol Adv High Temp Struct Mat Lab, Beijing, Peoples R China
[ 17 ] [Zhang, Ze]Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou, Peoples R China

通讯作者信息：

毛圣成韩晓东
[Long, Haibo]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China;;[Mao, Shengcheng]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China;;[Han, Xiaodong]Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China

电子邮件地址：

hblong@bjut.edu.cn |
scmao@bjut.edu.cn |
xdhan@bjut.edu.cn

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