Next Article in Journal
Bone Regeneration Using a Mixture of Silicon-Substituted Coral HA and β-TCP in a Rat Calvarial Bone Defect Model
Next Article in Special Issue
The Role of Grain Size on Neutron Irradiation Response of Nanocrystalline Copper
Previous Article in Journal
Effect of Addition of Colloidal Silica to Films of Polyimide, Polyvinylpyridine, Polystyrene, and Polymethylmethacrylate Nano-Composites
Previous Article in Special Issue
Investigation of High-Energy Ion-Irradiated MA957 Using Synchrotron Radiation under In-Situ Tension
Open AccessReview

Irradiation Induced Microstructure Evolution in Nanostructured Materials: A Review

Department of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China
Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA
Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Author to whom correspondence should be addressed.
Materials 2016, 9(2), 105;
Received: 30 November 2015 / Accepted: 2 February 2016 / Published: 6 February 2016
(This article belongs to the Special Issue Nuclear Materials 2015)
Nanostructured (NS) materials may have different irradiation resistance from their coarse-grained (CG) counterparts. In this review, we focus on the effect of grain boundaries (GBs)/interfaces on irradiation induced microstructure evolution and the irradiation tolerance of NS materials under irradiation. The features of void denuded zones (VDZs) and the unusual behavior of void formation near GBs/interfaces in metals due to the interactions between GBs/interfaces and irradiation-produced point defects are systematically reviewed. Some experimental results and calculation results show that NS materials have enhanced irradiation resistance, due to their extremely small grain sizes and large volume fractions of GBs/interfaces, which could absorb and annihilate the mobile defects produced during irradiation. However, there is also literature reporting reduced irradiation resistance or even amorphization of NS materials at a lower irradiation dose compared with their bulk counterparts, since the GBs are also characterized by excess energy (compared to that of single crystal materials) which could provide a shift in the total free energy that will lead to the amorphization process. The competition of these two effects leads to the different irradiation tolerance of NS materials. The irradiation-induced grain growth is dominated by irradiation temperature, dose, ion flux, character of GBs/interface and nanoprecipitates, although the decrease of grain sizes under irradiation is also observed in some experiments. View Full-Text
Keywords: nanostructured materials; irradiation resistance; grain boundary; void denuded zones nanostructured materials; irradiation resistance; grain boundary; void denuded zones
Show Figures

Figure 1

MDPI and ACS Style

Liu, W.; Ji, Y.; Tan, P.; Zang, H.; He, C.; Yun, D.; Zhang, C.; Yang, Z. Irradiation Induced Microstructure Evolution in Nanostructured Materials: A Review. Materials 2016, 9, 105.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Search more from Scilit
Back to TopTop