ISSN 2594-5327
55º Congresso anual — Vol. 55 , num. 1 (2000)
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High strength steel sheets with a high degree of formability for automotive application have been developed in response to the conflicting demands for safety and weight reduction. Industry is mainly interested in a good combination of high strength and large elongation. A recent development of higher strength is based on TRIP steel (TRansformation Induced Plasticity), with an excellent strength-ductility balance. TRIP steels have a complicated microstructure, obtained through well designed heat treatments and consisting of different phases, mainly ferrite, retained austenite, bainite and martensite. We used the Atomic Force Microscopy (AFM) technique for the phase identification and characterisation of this steel. A series of tests was made on a C-Si-Mn-TRIP steel after two different heat treatments, intercritical annealing followed by quench and intercritical annealing and ageing. It has been possible to identify the different phases and their topographic characteristics and to study their morphology.
High strength steel sheets with a high degree of formability for automotive application have been developed in response to the conflicting demands for safety and weight reduction. Industry is mainly interested in a good combination of high strength and large elongation. A recent development of higher strength is based on TRIP steel (TRansformation Induced Plasticity), with an excellent strength-ductility balance. TRIP steels have a complicated microstructure, obtained through well designed heat treatments and consisting of different phases, mainly ferrite, retained austenite, bainite and martensite. We used the Atomic Force Microscopy (AFM) technique for the phase identification and characterisation of this steel. A series of tests was made on a C-Si-Mn-TRIP steel after two different heat treatments, intercritical annealing followed by quench and intercritical annealing and ageing. It has been possible to identify the different phases and their topographic characteristics and to study their morphology.
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afm, trip-steel
afm, trip-steel
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Yáñez, Tanya Ros; Houbaert, Yvan.
CHARACTERISATION OF MULTIPHASES STEEL SURFACE TOPOGRAPHY BY ATOMIC FORCE MICROSCOPY,
p. 1960-1969.
In: 55º Congresso anual,
Rio de Janeiro, Brasil,
2000.
ISSN: 2594-5327, DOI 10.5151/2594-5327-C00942
