Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7979199 | Materials Science and Engineering: A | 2015 | 10 Pages |
Abstract
A heavy-reduction controlled rolling process with approximately 75% thickness reduction was carried out to investigate the microstructural evolution including texture development, focusing on the formation of a bimodal structure of 0.2% carbon steel with heating temperatures of 700, 800, 900, and 1000 °C. Upon increasing the heating temperature from 700 to 900 °C, the microstructure was refined and precipitates such as Fe3C were uniformly distributed throughout the microstructure. For the microstructures control-rolled at heating temperatures of 900 and 1000 °C with average ferrite grain sizes of 1.34 and 1.63 μm, respectively, a bimodal structure could be observed by scanning electron microscopy (SEM), which was very similar to the result of a plane-strain compression (PSC) test. Moreover, the 900 and 1000 °C-heated specimens had less well developed textures primarily consisting of {113}-{4 4 11}ã110ã and {332}ã113ã components, which usually developed by the transformation (γâα), and the 1000 °C-heated specimen exhibited various textures and a low intensity of the {100}ã011ã component, which was generally transformed from the {100}ã001ã component of the recrystallized austenite.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Hyung-Won Park, Kei Shimojima, Sumio Sugiyama, Hisanao Komine, Jun Yanagimoto,