Propiedades mecánicas y mecanismos de deformación en aleaciones del sistemas Fe-xMn-3,2Al-0,2C (12 ≤ x ≤ 43)

V. F. Rodríguez; J. A. Jiménez; P. Adeva; A. Bohórquez; G. A. Pérez; B. J. Fernández; J. Chao

doi:10.3989/revmetalm.1998.v34.iExtra.772

Mechanical properties and deformation mechanisms in Fe - xMn - 3.2Al - 0.2C (12 < x < 43) alloys

Authors

V. F. Rodríguez Universidad del Valle. Dpto. de Física
J. A. Jiménez Centro Nacional de Investigaciones Metalúrgicas, CENIM (CSIC)
P. Adeva Centro Nacional de Investigaciones Metalúrgicas, CENIM (CSIC)
A. Bohórquez Universidad del Valle. Dpto. de Física
G. A. Pérez Universidad del Valle. Dpto. de Física
B. J. Fernández Centro Nacional de Investigaciones Metalúrgicas, CENIM (CSIC)
J. Chao Centro Nacional de Investigaciones Metalúrgicas, CENIM (CSIC)

DOI:

https://doi.org/10.3989/revmetalm.1998.v34.iExtra.772

Keywords:

Manganese steels, Mechanical properties, Twining, Transformation-induced plasticity

Abstract

Microstructure and mechanical properties of Fe-xMn-3,2Al-0,23C alloys with 12 ≤ x ≤ 43 (mass %) at 77 and 290 K have been studied to determine the mechanisms controlling plastic deformation. Austenitic alloys (Mn ≥ 22) show an increase of elongation to failure with decreasing temperature of testing (inverse ductility). This behavior has been related to formation of deformation twins, which is favored at 77 K. Alloys with manganese content lower than 17 % present a two-phase microstructure (α' + γ). The martensite volume fraction increases as the manganese content decreases. These alloys show a loss of ductility, especially at 77 K. In contrast to asutenitic alloys, this different mechanical behavior has been associated with a TRIP mechanism (transformationinduced plasticity).

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Published

1998-05-30

How to Cite

Rodríguez, V. F., Jiménez, J. A., Adeva, P., Bohórquez, A., Pérez, G. A., Fernández, B. J., & Chao, J. (1998). Mechanical properties and deformation mechanisms in Fe - xMn - 3.2Al - 0.2C (12 < x < 43) alloys. Revista De Metalurgia, 34(Extra), 362–366. https://doi.org/10.3989/revmetalm.1998.v34.iExtra.772

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Issue

Vol. 34 No. Extra (1998)

Section

Articles

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