Correlation Between Microstructure and Mechanical Properties Before and After Reversion of Metastable Austenitic Stainless Steels

被引:19
作者
Fargas, Gemma [1 ]
Zapata, Ana [1 ]
Roa, Joan Josep [1 ]
Sapezanskaia, Ina [1 ]
Mateo, Antonio [1 ]
机构
[1] Univ Politecn Catalunya CIEFMA UPC, CIEFMA Dept Ciencia Mat & Engn Met, Barcelona 08028, Spain
来源
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2015年 / 46A卷 / 12期
关键词
INDUCED MARTENSITIC-TRANSFORMATION; DEFORMATION-INDUCED MARTENSITE; FATIGUE CRACK-PROPAGATION; STRAIN-INDUCED MARTENSITE; GRAIN-SIZE; PLASTIC-DEFORMATION; RESIDUAL-STRESS; ELASTIC-MODULUS; TWIP STEELS; BEHAVIOR;
D O I
10.1007/s11661-015-3178-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Reversion treatments are a way to improve the mechanical response of metastable austenitic stainless steels by means of grain refinement. To effectively apply those treatments, the steel must be previously deformed to induce a significant amount of martensitic transformation. In this work, the effect of reversion treatments was studied on a commercial AISI 301LN grade subjected to an industrial cold rolling process, with thickness reductions not higher than 40 pct. Microstructural changes and evolution of both monotonic and cyclic mechanical properties were investigated after cold rolling and upon reversion treatments. Results revealed that the finer austenitic microstructure obtained after reversion leads to an interesting combination of properties, with strong increments in hardness and yield strength, and also fatigue limit improvement, as compared to the initial annealed condition. (C) The Minerals, Metals & Materials Society and ASM International 2015
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页码:5697 / 5707
页数:11
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