MATEC Web of Conferences
Volume 21, 20154th International Conference on New Forming Technology (ICNFT 2015)
|Number of page(s)||6|
|Section||Materials and Characterisations|
|Published online||10 August 2015|
Characterization of precipitates in strip-cast 2.7%Si steel under different heat treatment conditions
State Key Laboratory of Rolling and Automation, Northeastern University, 110819 Shenyang, China
a Corresponding author: e-mail: firstname.lastname@example.org
A 1.5mm thickness as-cast Fe-2.7%Si strip was produced by twin-roll strip casting and the precipitates under different isothermal holding time (0.5 min–30 min) and cooling rates (1∘/s–20 ∘C/s) were investigated by thermal simulation experiment technology and electron probe micro-analyzer. The main precipitates in all specimens are AlN-MnS complex with a structure of core-edge. During isothermal holding, the number density of relatively large precipitates (≥ 0.3 μm) decrease with increase in time and the mean size of the small precipitates (≤150 nm) increases gradually. It can be attributed to the complicated interactions of dissolve, precipitation and coarsening behavior. For precipitates in strips cooling from 1380 ∘C to 20 ∘C, the mean size decreases continuously with increase in cooling rate because the corresponding growth rate and time of precipitates decrease. These results indicate that isothermal holding time and cooling rate have an important influence on size of precipitates in strip, which will be of great importance in optimizing properties of silicon steel.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.