Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9796575 | Materials Science and Engineering: A | 2005 | 9 Pages |
Abstract
The creep-fatigue interaction behaviour of a 15Cr-15Ni, Ti modified austenitic stainless steel has been characterized as a function of Ti/C ratio and microstructure. Creep-fatigue interaction behaviour has been investigated in this material, by introducing hold times with durations ranging from 1 to 10Â min at peak tensile strain. The material was tested at 923Â K in Ti/C ratios of 4 and 8 and in the solution annealed, cold worked and aged conditions. It has been ascertained that precipitation controls creep-fatigue interaction properties in this alloy. Carbides which precipitate on the grain boundaries in the solution annealed material are found to be beneficial to creep-fatigue interaction properties, while fine titanium carbides which precipitate in the matrix in cold worked and aged conditions of the alloy, have been found detrimental to creep-fatigue interaction properties.
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Authors
R. Sandhya, K. Bhanu Sankara Rao, S.L. Mannan,