Authors: Hyde, T. H.; Sun, W.; Williams, J. A.

Source: International Materials Reviews, Volume 52, Number 4, July 2007 , pp. 213-255(43)

Publisher: Maney Publishing

Abstract:

The review is concerned with the use of miniature specimens to identify the mechanical/creep properties of metals and alloys. It is not intended to consider the nanoscales, which have been reviewed elsewhere, but focus on the size ranges and forms that are of use to areas such as alloy development, surveillance monitoring, effects of irradiation, properties of weld structures and remaining life. For many of these cases, there are technical advantages in the use of small specimens. Where possible, available reviews in this area are used and identified. The needs for small specimen sizes are considered, and the wide range of sizes of both conventional and more unusual specimen designs is reviewed. The potential effects of specimen size are considered: the microstructural features of the material, the effect of constraint and the actual region of the specimen that is undergoing deformation, and finally statistical approaches. The results of published studies are considered under the general groupings of yield/deformation behaviour, creep properties, toughness and fatigue, with an examination of the current state of interpretation of data from mini-specimens because interpretation is one of the key areas of interest. Finally, the current status of each area is considered, as certain designs of specimen will be better suited to answering specific technical questions. The need for standards for specific designs is also examined.

Keywords: MECHANICAL PROPERTIES; CREEP; SMALL PUNCH TESTING; MINIATURE SPECIMENS; FRACTURE TOUGHNESS; FATIGUE

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174328007X160317

Publication date: 2007-07-01

More about this publication?

• The archive of International Materials Reviews has three previous titles. The full archive is available online, and each title has a separate page of volumes. Please see Metallurgical Reviews , for volumes 1-16, International Metallurgical Reviews for volumes 17-20 and International Metals Reviews for volumes 21-31

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