Mechanical Analysis of Low and High Chromium Steels Used in Hot Strip Work Rolls
| Autor: | Lyes Douadji, F.Javier Belzunce, Abdelkader Ziadi, Inés Fernández Pariente, Fethi Benkhenafou, Ming Quan Shi |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Metallurgy technology industry and agriculture chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Chromium Fracture toughness Work (electrical) chemistry 0103 physical sciences General Materials Science 0210 nano-technology |
| Zdroj: | Solid State Phenomena. 279:3-9 |
| ISSN: | 1662-9779 |
| DOI: | 10.4028/www.scientific.net/ssp.279.3 |
| Popis: | Microstructure, hardness and fracture toughness of low and high chromium high speed steel used in hot strip mills and subjected to conventional heat treatment have been examined. The influence of tempering temperatures on the mechanical properties of these products, determined using tensile and fracture toughness tests, was studied in this research work. The developed microstructures have been characterized by XRD, optical microscopy and SEM examinations. Macrohardness and microhardness of the specimens have been evaluated by Vickers indentation technique. The fracture toughness of these products was investigated using the rupture weight on 3 points bending specimens. The plane strain fracture toughness KIc and the fracture strength were measured for each alloy. The shell is high harness high speed steels, and the core is nodular cast iron. It was found that most fracture occurred in the eutectic carbides formed by the high content alloy element, such as Mo,V,Cr, but that for the alloys with a reduced volume fraction of eutectic carbides, a small amount of crack propagation occurred in the austenitic dendrites. |
| Databáze: | OpenAIRE |
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