Journal ArticleDOI
The shape of intergranular creep cracks gro′ing by surface diffusion
Chuang T′e-Jer,James R. Rice +1 more
TLDR
In this article, the shape of the cavity surfaces is determined based on the assumption that this is governed by surface diffusion, and that steady state conditions prevail, so that the cavity advances as a profile retaining a constant shape near its tip.About:
This article is published in Acta Metallurgica.The article was published on 1973-12-01. It has received 230 citations till now. The article focuses on the topics: Diffusion creep & Stress concentration.read more
Citations
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Journal ArticleDOI
Overview No. 1: The nucleation of cavities by plastic deformation
S.H. Goods,L.M. Brown +1 more
TL;DR: A review of the literature concerning cavity nucleation as a result of plastic deformation indicates that at low temperatures there is a critical plastic strain required to nucleate a cavity.
Journal ArticleDOI
Dynamic failure of solids
TL;DR: In this article, the authors present a methodology that relates the kinetics of material failure on the microstructural level to continuum mechanics, by introducing micro-structural descriptions of damage into the continuum constitutive relations as internal state variables.
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Overview no. 2
TL;DR: In this article, the authors compare the quasi-equilibrium model to another limiting case based on a narrow, crack-like cavity shape, and show that for circular cavities on a grain boundary with diameter equal to a quarter of their average center-to-center spacing, the quasi equilibrium mode applies when s Δ and the cracklike mode when s > 2 + 9 Δ, where Δ is the ratio of surface to grain boundary diffusivity.
Journal ArticleDOI
Overview No. 3 Fracture-mechanism maps and their construction for f.c.c. metals and alloys
TL;DR: Fracture-mechanism maps are diagrams with tensile stress as one axis and temperature as the other, showing the fields of dominance of a given micromechanism of fracture: cleavage, ductile fracture, rupture, intergranular creep fracture, and so on as mentioned in this paper.
Journal ArticleDOI
Creep cavitation in metals
Michael E. Kassner,T.A. Hayes +1 more
TL;DR: A review of the state-of-the-art of the understanding of cavity formation during stages I and II (primary and secondary) creep in polycrystalline metals and alloys, particularly at elevated temperatures, can be found in this article.
References
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Journal ArticleDOI
Theory of Thermal Grooving
TL;DR: In this paper, the Gibbs-Thompson formula is used to describe the development of surface grooves at the grain boundaries of a heated polycrystal and the mechanisms of evaporation-condensation and surface diffusion are discussed with the use of the Gibbs•Thompson formula.
Journal ArticleDOI
Creep cracks and the concept of damage
TL;DR: The most common form of damage in this material appears to be the formation of sharp grain boundary cracks and a model has recently been proposed for the gradual growth of one of these cracks to infinite size as mentioned in this paper.