Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1610375 | Journal of Alloys and Compounds | 2015 | 6 Pages |
Abstract
A sandwich-structured composite containing a hypereutectic high chromium cast iron (HCCI) and low carbon steel (LCS) claddings was newly fabricated by centrifugal casting, then the blank was hot-rolled into composite plate. The carbide fragmentation and dissolution behavior of the hot-rolled HCCI were analyzed. During hot rolling, significant refinement of carbides was discovered in hot-rolled HCCI specimens. The carbides were broken and partly dissolved into the austenite matrix. The results show that carbides are firstly dissolved under the action of stress. There are grooves appeared at the boundaries of the carbides. The grooves reduce the cross section of the carbide. When the cross section of the carbide reaches to the required minimum critical cross section, the carbide breaks through the tensile force. After break, carbides continue to dissolve since more interfaces between the matrix and carbides are generated. The secondary carbides precipitated due to the dissolution are index as fcc and stacking faults parallel to the {1Â 1Â 1} are observed.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Fei Liu, Yehua Jiang, Han Xiao, Jun Tan,