Published: Jan 1968
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The various fracture surface features formed by fine-scale plastic flow processes are discussed, and the mechanisms by which they are formed are discussed where they are known.
Glide plane decohesion, as it has been used in the literature, is shown to be misleading, and a more descriptive term, “stretching,” is used in its place. The use of “ductile cleavage” to describe the same process is also misleading.
Since brief, descriptive, nonmisleading terminology is necessary for immediate communication, several terms have evolved to describe the surfaces created by unknown processes. Glide plane decohesion, serpentine glide, ripples, stretching, and three kinds of microvoid coalescence are shown to be parts of a spectrum of plastic rupture.
electron microscopy, fractography, surface features, plastic flow, metals, fracture mechanisms
HeadPersonal member, Naval Research LaboratoryASTM, Washington, D.C.,
Physical metallurgist, Naval Research Laboratory, Washington, D.C.,