Strong Interactions between Austenite and the Matrix of Medium-Mn Steel during Intercritical Annealing
| Autor: | Tianpeng Zhou, Cunyu Wang, Chang Wang, Wenquan Cao, Zejun Chen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
austenite nucleation
matrix recrystallization strong interaction Kurdjumov Sachs orientation relationship Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
| Zdroj: | Materials, Vol 13, Iss 15, p 3366 (2020) |
| Druh dokumentu: | article |
| ISSN: | 13153366 1996-1944 |
| DOI: | 10.3390/ma13153366 |
| Popis: | The effects of heat treatment on the microstructure evolution was studied in regards to austenite nucleation and grain growth. It was found that the austenite nucleation and matrix recrystallization kinetics of samples annealed at 675 °C for different times were revealed, implying a strong interaction between the ferrite matrix and austenite. The recrystallization of the matrix during annealing provided favorable conditions for austenite nucleation and growth, and the formation of austenite during this process reduced the matrix recrystallization kinetics, thus delaying the recrystallization process of the matrix around the austenite grains. The statistical results for the austenite grain size under different annealing temperatures indicated that the average grain size of the austenite slightly increases with increasing of the annealing temperature, but the austenite with the largest grain size grows faster at the same temperature. This difference is attributed to the strict Kurdjumov Sachs (KS) orientation relationship (OR) between the austenite grains and the matrix, because the growth of austenite with a strict KS OR with the matrix is often inhibited during annealing. In contrast, the austenite maintains a non-strict KS OR with the matrix and can grow preferentially with increasing annealing temperature and time. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|