Effect of microalloying elements (B, Nb, V and Ti) on the strain hardening behavior of high-manganese TWIP steels
Por:
Reyes-Calderón F., Mejía I., Cabrera J.M.
Publicada:
1 ene 2012
Resumen:
The present research work analyses the influence of microalloying elements (B, Nb, V and Ti) on the tensile strength and the strain hardening behavior of a high-manganese TWIP steel. The analysis was carried out by means of true stress-true strain curves derived from uniaxial tension tests. The work hardening exponent was determined by using the Hollomon and differential Crussard-Jaoul models. Metallographic characterization was carried out to determine the metallurgical changes associated with n values. The results indicate that the Hollomon analysis results in strain hardening exponent values up to 0.46. On the other hand, the differential Crussard-Jaoul analysis establishes a clear distinction of n value for two stages of plastic deformation which are determined by a sharp slope change in the plot of In(ds/de)-Ine. © 2012 Materials Research Society.
Filiaciones:
Reyes-Calderón F.:
Instituto de Investigaciones Metalúrgicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, 58060-Morelia, Michoacán, Mexico
Mejía I.:
Instituto de Investigaciones Metalúrgicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, 58060-Morelia, Michoacán, Mexico
Cabrera J.M.:
Departament de Ciència del Materials I Enginyeria Metal-lúrgica, ETSEIB, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028-Barcelona, Spain
Fundació CTM Centre Tecnològic, Av. de les Bases de Manresa 1, 08242-Manresa (Barcelona), Spain
|