Modification of nitride layer on cold-work tool steel by laser melting and friction stir processing
| Autor: | Hidetoshi Fujii, Toru Nagaoka, Genryu Abe, Tadashi Mizuno, Masao Fukusumi, Yoshiaki Morisada |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Friction stir processing
Materials science Metallurgy Surfaces and Interfaces General Chemistry Work hardening Nitride engineering.material Condensed Matter Physics Microstructure Surfaces Coatings and Films Brittleness Tool steel Materials Chemistry engineering Inertial confinement fusion Nitriding |
| Zdroj: | Surface and Coatings Technology. 204:386-390 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2009.07.043 |
| Popis: | The microstructural control of the nitrided case on a cold-work tool steel (SKD11) plate by laser melting and friction stir processing (FSP) was studied. The laser melting and the FSP were used as a pretreatment for the nitriding to refine the microstructure of the SKD11. The diffusion zone of the nitrided case on the SKD11 plate contained thick brittle boundary lines consisting of local formed nitride particles. On the other hand, the microstructure of the diffusion zone was very uniform and the thick brittle boundary lines disappeared as a result of the combined treatment of the laser melting and the FSP before the nitriding process. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect