Determination of the Critical Strains for the Initiation of Dynamic Transformation and Dynamic Recrystallization in Four Steels of Increasing Carbon Contents. Issue 5 (5th December 2012)

• Record Type: Journal Article
• Authors: Ghosh, Chiradeep; Basabe, Vladimir V.; Jonas, John J.
• Is Part Of: Steel research international. Volume 84:Issue 5(2013:May)
• Page Start: 490
• Page End: 494
• Publication Date: 2012-12-05
• Subjects: Steel -- Periodicals; Steel -- Metallurgy -- Periodicals; 669.142
• DOI: 10.1002/srin.201200188
• Languages: English
• ISSNs: 1611-3683

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Hot torsion tests are carried on three plain carbon steels and a Nb microalloyed steel of increasing C concentrations. The tests are performed at strain rates up to 4 s⁻¹ and over the temperature range 743–917°C. The onsets of dynamic transformation (DT) and dynamic recrystallization (DRX) are detected using the double‐differentiation method. Both mechanisms are initiated under all testing conditions but one. The critical strain for DT increases with temperature while the reverse dependency is exhibited by the critical strain for DRX.</p> </abstract>