Abstract
Low cohesive strength of grain boundaries and high sensitivity of this parameter to the presence of non-metallic impurities are considered as the causes of grain boundary brittleness and poor workability of refractory fcc-metal iridium. The mechanisms of grain boundary brittleness in both contaminated and non-metallic impurity-free iridium are discussed in the presented paper.
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Panfilov, P., Yermakov, A. Mechanisms of inherent and impurity-induced brittle intercrystalline fracture in pure FCC-metal iridium. International Journal of Fracture 128, 147–151 (2004). https://doi.org/10.1023/B:FRAC.0000040977.26875.1f
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DOI: https://doi.org/10.1023/B:FRAC.0000040977.26875.1f