The effects of strain rate and carbon concentration on the dynamic strain aging of cold rolled Ni-based alloy in high temperature water. (October 2015)

• Record Type: Journal Article
• Authors: Kuang, Wenjun; Was, Gary S.
• Is Part Of: Scripta materialia. Volume 107(2015)
• Page Start: 107
• Page End: 110
• Publication Date: 2015-10
• Subjects: Cold rolling -- Slow strain rate tensile test -- Nickel alloys -- Dynamic strain aging -- Portevin–Le Chatelier effect; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.05.033
• Languages: English
• ISSNs: 1359-6462

Abstract

Graphical abstract: The stress amplitude of serrations first increases with decreasing strain rate and then gradually saturates. The matrix carbon concentration affects the stress amplitude and the tendency to saturation. Abstract: The effect of strain rate on dynamic strain aging of cold-rolled Ni-based alloy was investigated. With decreasing strain rate, the stress amplitude of serrations first increased and then saturated. Compared with the solution-annealed condition, the thermally-treated condition produced smaller stress amplitudes that saturated at a lower strain rate. Observations are consistent with a mechanism in which the locking strength of solute atmospheres first increases with increasing solute atom arrival at dislocations and gradually saturates as solute reaches a critical level.