Crack Propagation Along Crystallographic Slip Bands and Hydrogen Embrittlement.
MICHIGAN TECHNOLOGICAL UNIV HOUGHTON DEPT OF METALLURGICAL ENGINEERING
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The propagation of a crack along a crystallographic slip band occurs frequently in alloys susceptible to planar, non-uniform slip. Such crystallographic cracking occurs in large grain or single crystal material and on planes inclined to the stress axis and is most commonly observed under cyclic loading conditions in high strength Ni-, Al-, and Ti alloys. In all of these materials, cracks propagating along slip bands usually have a substantially brittle or cleavage-like fracture appearance, which can be sensitive to the environment. This suggests that normal stresses and environmental effects are important in this fracture process.
- Metallurgy and Metallography