ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
It is now well-established that processing through the application of severe plasticdeformation (SPD) leads to a significant reduction in the grain size of a wide range of metallicmaterials. This paper examines the fabrication of ultrafine-grained materials using high-pressuretorsion (HPT) where this process is attractive because it leads to exceptional grain refinement withgrain sizes that often lie in the nanometer or submicrometer ranges. Two aspects of HPT areexamined. First, processing by HPT is usually confined to samples in the form of very thin disksbut recent experiments demonstrate the potential for extending HPT also to bulk samples. Second,since the strains imposed in HPT vary with the distance from the center of the disk, it is importantto examine the development of inhomogeneities in disk samples processed by HPT
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.558-559.1283.pdf
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