Fatigue Crack Growth of Ultrafine Grained Pure Ti after Severe Plastic Deformation

Abstract:

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Fatigue crack growth behavior of the ultrafine-grained pure Ti produced by ECAP was investigated. The ECAPed sample with a total strain of 4.6 showed nearly equiaxed grains with an average size of about 0.3 μm. After ECAP, the ultimate tensile strength was increased by 60%, while the tensile elongation was decreased by 31%. The ECAPed Ti showed much higher resistance in fatigue crack growth by about a factor of 4 over the whole +K due to plasticity-induced crack closure.

Info:

Periodical:

Solid State Phenomena (Volumes 124-126)

Edited by:

Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park

Pages:

1385-1388

DOI:

10.4028/www.scientific.net/SSP.124-126.1385

Citation:

C. Y. Hyun and H. K. Kim, "Fatigue Crack Growth of Ultrafine Grained Pure Ti after Severe Plastic Deformation", Solid State Phenomena, Vols. 124-126, pp. 1385-1388, 2007

Online since:

June 2007

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Price:

$35.00

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