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Nanostructure Variations and Their Effects on Mechanical Strength of Ni-17Mo-7Cr Alloy under Xenon Ion Irradiation
Huang, HF; Li, DH; Li, JJ; Liu, RD; Lei, GH; He, SX; Huang, Q; Yan, L; yanlong@sinap.ac.cn
2014
Source PublicationMATERIALS TRANSACTIONS
ISSN1345-9678
Volume55Issue:8Pages:1243—1247
AbstractA nickel-base high-temperature alloy (Ni-17Mo-7Cr) has been characterized by nanoindentation and transmission electron microscopy to determine the changes of nanoindentation hardness and microstructural evolution under ion irradiation. Ion irradiation experiments for bulk and thin-foil specimens of Ni-17Mo-7Cr alloy were carried out at room temperature, up to 6.6 dpa, by 7 MeV Xe26+ and 1 MeV Xe20+ ions, respectively. The continuous stiffness measurement (CSM) with a diamond Berkovich indent was used to measure the depth profile of hardness. Nanoindentation results for bulk specimens showed an evident ion irradiation induced hardening phenomenon, and the nanoindentation hardness increases with increasing ion dose. High number density of nano-scale black spots and linear-like defects were observed in thin-foil specimens irradiated at 0.33 and 6.6 dpa, respectively. High-resolution transmission electron microscopy images revealed that the black spots were nano-scale solute clusters and dislocation loops, while the linear-like defects were found to be Ni, Mo and Cr-enrichment regions by using the high-angle annular dark field-scanning transmission electron microscope. The ion irradiation induced defects can be responsible for the hardening of Ni-17Mo-7Cr alloys.
KeywordElastic-modulus Indentation Hardness Steels Temperature Reactors Damage Load
Indexed BySCI
Language英语
WOS IDWOS:000343333500028
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14265
Collection中科院上海应用物理研究所2011-2019年
Corresponding Authoryanlong@sinap.ac.cn
Recommended Citation
GB/T 7714
Huang, HF,Li, DH,Li, JJ,et al. Nanostructure Variations and Their Effects on Mechanical Strength of Ni-17Mo-7Cr Alloy under Xenon Ion Irradiation[J]. MATERIALS TRANSACTIONS,2014,55(8):1243—1247.
APA Huang, HF.,Li, DH.,Li, JJ.,Liu, RD.,Lei, GH.,...&yanlong@sinap.ac.cn.(2014).Nanostructure Variations and Their Effects on Mechanical Strength of Ni-17Mo-7Cr Alloy under Xenon Ion Irradiation.MATERIALS TRANSACTIONS,55(8),1243—1247.
MLA Huang, HF,et al."Nanostructure Variations and Their Effects on Mechanical Strength of Ni-17Mo-7Cr Alloy under Xenon Ion Irradiation".MATERIALS TRANSACTIONS 55.8(2014):1243—1247.
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