Abstract:Stress relaxation was examined in a high carbon steel by means of wedged split-ring specimens. Enchanced relaxation arising from the redistribution and coarsening of cementite at high temperatures and...Stress relaxation was examined in a high carbon steel by means of wedged split-ring specimens. Enchanced relaxation arising from the redistribution and coarsening of cementite at high temperatures and/or long times was found to be independent of the applied stress, at least within the range investigated. In addition, a creepback phenomenon was observed when a sample was reheat-treated under these conditions. At lower temperatures and/or shorter times, the relaxation was a linear function of applied stress and the creepback phenomenon was absent. A dual stress relaxation mechanism is proposed wherein the enhanced relaxation and associated creepback effect are due to the generation of a plastic zone set up during the carbide precipitation, while the stress-dependent relaxation process involves general yielding of the matrix.Read More
Publication Year: 1976
Publication Date: 1976-06-01
Language: en
Type: article
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