Effect of the strain reversal on austenite-ferrite phase transformation in a Nb-microalloyed steel

被引：25
作者：
Lanzagorta, J. L. [1 ]
Jorge-Badiola, D. [1 ]
Gutierrez, I. [1 ]
机构：
[1] Univ Navarra, CEIT & Tecnun, Donostia San Sebastian 20018, Spain
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 4-5期
关键词：
Nb-microalloyed steel; Hot working; Austenite-ferrite transformation; Strain reversal; FLOW-STRESS BEHAVIOR; MECHANICAL-BEHAVIOR; RECRYSTALLIZATION TEMPERATURE; STAINLESS-STEEL; HOT-WORKING; DEFORMATION; PRECIPITATION; EVOLUTION; KINETICS;
D O I：
10.1016/j.msea.2009.09.007
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Multipass torsion tests were performed on an Nb-microalloyed steel at decreasing temperatures so as to analyze the effect of strain reversal - in the strain accumulation region - on the gamma -> alpha transformation kinetics. Strain reversal involved a significant delay in the start of the transformation as well as a microstructural transient compared to monotonic strain conditions. However, after several passes with no reversal performed within the inter-critical temperature region, both types of tests led to similar microstructures. (C) 2009 Elsevier B.V. All rights reserved.
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收藏
页码：934 / 940
页数：7
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