## 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.

Original language | English |
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Pages (from-to) | 1-17 |

Number of pages | 17 |

Journal | Materials Science and Technology (United Kingdom) |

DOIs | |

Publication status | Published - 2020 |

## Keywords

- coarsening
- dissolution
- finite difference approach
- inter-lath cementite
- lath martensite
- mathematical model
- Q&T steel

## ASJC Scopus subject areas

- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering