Elsevier

Journal of Nuclear Materials

Volumes 141–143, Part 1, November–December 1986, Pages 152-155
Journal of Nuclear Materials

Low cycle fatigue behavior of titanium carbide coated molybdenum

https://doi.org/10.1016/S0022-3115(86)80026-5Get rights and content

Low cycle fatigue tests of TiC coated and uncoated molybdenum materials were performed in a vacuum at room temperature, 773 and 1073 K in order to examine the influence of TiC coating on the fatigue strength. The relation between the fatique life, Nf and the plastic strain range, Δεap was expressed by the equation, ΔεapNfβ = C, where β and C are constants. At 773 and 1073 K uncoated molybdenum fractured on the plane of the maximum shear stress, but on the plane of the maximum tensile stress at room temperature. The low cycle fatigue strength of TiC coated molybdenum decreased compared with that of the uncoated one at 773 K, where cracks were observed to be initiated at the TiC coating layer and to extend into the molybdenum matrix by a notch effect. At 1073 K, however, the TiC coated molybdenum exhibited higher fatigue strength than the uncoated one since the TiC coating layer seemed to restrict a slip deformation of molybdenum matrix.

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There are more references available in the full text version of this article.

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