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Microstructure and Nano-Hardness of 10 MeV Cl-Ion Irradiated T91 Steel*

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© 2015 Hefei Institutes of Physical Science, Chinese Academy of Sciences and IOP Publishing
, , Citation Jing Hu et al 2015 Plasma Sci. Technol. 17 1088 DOI 10.1088/1009-0630/17/12/19

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xpwang@issp.ac.cn

Author affiliations

1 Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China

2 School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China

Dates

  1. Received 19 December 2014
  2. Accepted 16 March 2015

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1009-0630/17/12/1088

Abstract

Hardening and elemental segregation of T91 martenstic steel irradiated by 10 MeV Cl ions to doses from 0.06 dpa to 0.83 dpa were investigated with the nanoindentation technique and transmission electron microscopy (TEM). The results demonstrated that the irradiation hardening was closely related with irradiation dose. By increasing the dose, the hardness increased rapidly at first from the initial value of 3.15 GPa before irradiation, and then tended to saturate at a value of 3.58 GPa at the highest dose of 0.83 dpa. Combined with TEM observation, the mechanism of hardening was preliminary attributed to the formation of M(Fe,Cr)23C6 carbides induced by the high energy Cl-ion irradiation.

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Footnotes

  • * 

    supported by National Natural Science Foundation of China (Nos. 11374299, 11375230, 11274309)

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10.1088/1009-0630/17/12/19