| Investigation of Subboundaries Evolution in Superplastically Deformed NiAl by Positron Lifetime |
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| 作者姓名： | XinghaoDU JiantingGUO BideZHOU LiangyueXIONG |
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| 作者单位： | [1]DepartmentofSuperalloys,InstituteofMetalResearch,ChineseAcademyofSciences,Shenyang110016,China [2]SchoolofMaterialSciencesandEngineering,HarbinInstituteofTechnology,Harbin150001,China |
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| 基金项目： | 国家自然科学基金，National Advanced Materials Committee of China fund |
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| 摘 要： | In order to study the subboundaries evolution in superplastically deformed NiAl,the positron lifetime change during superplastic deformation process was measured.It is shown that the superplastic deformation of NiAl has not influence on its τ2,the newly recrystallized grain boundaries formed during entire superplastic deformation process belong to the calegory of subboundaries and have not contribution to the superplastic strain.
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| 关 键 词： | NiAl合金 镍铝合金 正电子寿命 超塑性 次边界进化 |
Investigation of Subboundaries Evolution in Superplastically Deformed NiAl by Positron Lifetime |
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| XinghaoDU JiantingGUO BideZHOU LiangyueXIONG.Investigation of Subboundaries Evolution in Superplastically Deformed NiAl by Positron Lifetime[J].Journal of Materials Science & Technology,2003,19(4):373-375. |
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| Authors: | Xinghao DU Jianting GUO Bide ZHOU Liangyue XIONG |
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| Affiliation: | Department of Superalloys, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
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| Abstract: | In order to study the subboundaries evolution in superplastically deformed NiAl, the positron lifetime change during superplastic deformation process was measured. It is shown that the superplastic deformation of NiAl has not influence on its T2, the newly recrystallized grain boundaries formed during entire superplastic deformation process belong to the calegory of subboundaries and have not contribution to the superplastic strain. |
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| Keywords: | NiAl Positron lifetime Superplasticity Boundaries |
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