Simulation of coarsening of inter-lath cementite in a Q&T steel during tempering
Research output: Contribution to journal › Article › peer-review
Authors
Colleges, School and Institutes
External organisations
- School of Materials Science & Engineering
- Jiangsu University
- University of Warwick
Abstract
A mathematical model, using the finite difference approach, was established to consider tempering in a low carbon low alloy quenched and tempered steel based on experimental observations, treating the coarsening of a larger particle and dissolution of a smaller particle as a continuous and simultaneous process for coupled inter-lath cementite systems. The diffusion of Mn was simplified as a 1D diffusion and occurred between the interface elements and their adjacent elements in the model. The mathematical model predicted the shortest dissolution times for smaller particles in coupled inter-lath cementite systems, which agreed well with experimental observations on tempering from 2 to 4 h. However, the larger particle coarsening was under predicted due to the simplification of considering two particle arrangements.
Details
Original language | English |
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Pages (from-to) | 1-17 |
Number of pages | 17 |
Journal | Materials Science and Technology (United Kingdom) |
Publication status | Published - 2020 |
Keywords
- coarsening, dissolution, finite difference approach, inter-lath cementite, lath martensite, mathematical model, Q&T steel