Compressive Creep of Rutile at High Temperatures

Bell, Harold M.; Krishnamachari, V.; Jones, J. T.

doi:10.1111/j.1151-2916.1971.tb12318.x

Cited by 8 publications

(2 citation statements)

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“…Progress in this area can be rather straight forward as many concepts are directly transferrable from metals and studies on single crystals, for example, YSZ, TiO 2 or LiF, exist. 9,211,212 Compared to the other aspects, this field is rather unchartered as nucleation or fundamental mobility are more often the key limitation to plasticity. In contrast, much engineering of obstacles for dislocation is already highly perfected in industrially applied metals.…”

Section: Obstacles To Motionmentioning

confidence: 99%

“…In consequence, the yield strength rises with the degree of deformation which is referred to as strain hardening. Strain hardening can be highly pronounced in some materials, for example, TiO 2 , where after a small degree of deformation, the strain rate is limited by the rate at which recovery and creep can take place 207–214 . In other materials, such as for the < 100 > {100} slip system of SrTiO 3 at high temperature, 76 it is hardly observed, see panel Figures A3 and A4.…”

Section: Introductionmentioning

confidence: 99%

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60 years of dislocations in ceramics: A conceptual framework for dislocation mechanics in ceramics

Porz

2022

Int J Ceramic Engine & Sci

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High‐tech ceramics are typically engineered by controlling point defects and interfaces while one‐dimensional dislocations have found much less attention so far. Nevertheless, their impact on almost any functional property and the sudden ease to fabricate them with novel synthesis methods, such as rapid densification, brings spotlight attention to dislocations as design dimension. Although the typical brittleness of ceramics insinuates the irrelevance of dislocations for mechanical behavior, abundant literature is spread over materials, decades, and disciplines, however, often unconnected. Here, a conceptual framework for dislocation mechanics in ceramics separated into five logical aspects, (1) fundamental mobility, (2) obstacles to motion, (3) limitation by necessity of nucleation, (4) motion complexity, and (5) avoidance of competing mechanisms, brings oversight into the complex behavior. In consequence, quicker identification of the limiting step allows to estimate the potential involved more precisely and to identify open research questions with greater ease. An introduction to dislocations and the functionality involved, a look back over the last six decades, and highlights of open question are dedicated to provide a framework and bridge the gap between the attached research fields.

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Section: Obstacles To Motionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%