Elastic Constants

From various theoretical calculations, it has been noted that point defects created during irradiation may affect the elastic constants (elastic modulus and shear mod­ulus). Interstitials are noted to have the greatest effect. Experimental results have not readily shown much changes. Also, point defect diffusion and annihilation lessen the effect. Higher fluences tend to show some effect. However, as defect insensitive properties, elastic constants do not change significantly with change in microstructure.

6.3.3