Computational and Experimental Analysis of Carbo‐Nitride Precipitation in Tempered Martensite |
| |
| Authors: | Sabine Zamberger Tomasz Wojcik Jürgen Klarner Gerald Klösch Herbert Schifferl Ernst Kozeschnik |
| |
| Affiliation: | 1. voestalpine Stahl Donawitz GmbH & Co KG, Kerpelystra?e 199, 8700 Leoben, Austria;2. University Service Center for Transmission Electron Microscopy, Vienna University of Technology, Wiedner Hauptstra?e 8‐10/052, 1040 Vienna, Austria;3. voestalpine Tubulars GmbH & Co KG, Alpinestra?e 17, 8652 Kindberg, Austria;4. Christian Doppler Laboratory for “Early Stages of Precipitation”, Institute of Materials Science and Technology, Vienna University of Technology, Favoritenstra?e 9‐11, 1040 Vienna, Austria |
| |
| Abstract: | The present work describes the analysis of carbo‐nitride precipitation kinetics in tempered martensite of Nb–Ti‐microalloyed steel with a carbon content of 0.3 wt%. Based on the information obtained from transmission electron microscopy and scanning electron microscopy, a computational simulation procedure is developed within the software package MatCalc, which is capable of describing the experimental results in terms of the number density, composition, and type of precipitate phases. No explicit fitting parameters are used in the computer simulation. The input data is entirely based on independent physical or microstructural parameters. To determine the chemical composition and type of precipitates, energy dispersive X‐ray spectroscopy and selected area electron diffraction are utilized. The simulation results and the experimentally obtained information are in good agreement. |
| |
| Keywords: | computational analysis microalloyed steel precipitation kinetics tempered martensite |
|
|
