| About this Abstract |
| Meeting |
Materials Science & Technology 2012
|
| Symposium
|
Steel Product Metallurgy and Applications
|
| Presentation Title |
Control of Carbide Distributions by Modifying Heating Rates in Induction Tempering Treatments |
| Author(s) |
Cristina Revilla, Pello Uranga, Jose M. Rodriguez-Ibabe, Beatriz López |
| On-Site Speaker (Planned) |
Jose M. Rodriguez-Ibabe |
| Abstract Scope |
Microstructures produced by quenching and tempering treatments are characterized by carbide particles distributed in a steel matrix. In conventional tempering, the treatment parameters are selected in order to obtain predefined strength requirements. Sometimes a proper control of the coarse carbide sizes and volume fractions becomes difficult, aspect that becomes relevant when high toughness requirements are necessary. Induction tempering appears as a procedure able to modulate the characteristics of the distribution of coarse grain boundary carbides. This study focuses on the influence of different heating rates, ranging from 1 to 300ºC/s, on the nucleation and growth of carbides for the case of a low alloy 0.4%C steel. The study analyses differences between carbides nucleated at high angle grain boundaries and those formed in the matrix and their evolution as a function of tempering time. Quantitative microstructural measurements including EBSD analysis have been done, correlating carbide nucleation steps with matrix recovery levels. |
| Proceedings Inclusion? |
Definite: A CD-only volume |