Effect of thermo-mechanical parameters on microstructure and mechanical properties of microalloyed steels
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| Format: | Artículo científico |
| Langue: | en |
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Sociedade Brasileira de Física
2010
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| _version_ | 1876465006880489472 |
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| author | G.R. Ebrahimi |
| author_facet | G.R. Ebrahimi |
| contents | Effect of thermo-mechanical parameters on microstructure and mechanical properties of microalloyed steels G.R. Ebrahimi M. Javdani H. Arabshahi Física, Astronomía y Matemáticas Niobium hot rolling microstructure Microalloyed steel mechanical properties In this work the effects of controlled rolling parameters and adding of Niobium have been studied. In this order two steel grades with and without Niobium are planed and after steelmaking and continuous casting, rolling process are done. Then, laboratory investigations such as microstructure, mechanical properties and grain size analysis were performed Tensile and Charpy impact tests specimens were machined out of the central part of the rolled billets. The microstructure of the specimens was examined for each experimental condition using optical microscopy. The results indicate that increasing the reheating temperature above the dissolution temperature of Nb (C, N) improved the impact energy values. By increasing the cooling rate from 0.5 to 1.5 ºC/s both tensile strength and impact toughness were improved. High elongation percent was also observed on samples reheated at higher temperature and/or cooled with the higher cooling rates. The obtained mechanical properties were related to the characteristics of microstructural components including acicular ferrite, retained austenite, pearlite and ferrite. 2010 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46415799017 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4 Vol.40 |
| format | Artículo científico |
| id | redalyc_46415799017 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Effect of thermo-mechanical parameters on microstructure and mechanical properties of microalloyed steels G.R. Ebrahimi Física, Astronomía y Matemáticas Niobium hot rolling microstructure Microalloyed steel mechanical properties Effect of thermo-mechanical parameters on microstructure and mechanical properties of microalloyed steels G.R. Ebrahimi M. Javdani H. Arabshahi Física, Astronomía y Matemáticas Niobium hot rolling microstructure Microalloyed steel mechanical properties In this work the effects of controlled rolling parameters and adding of Niobium have been studied. In this order two steel grades with and without Niobium are planed and after steelmaking and continuous casting, rolling process are done. Then, laboratory investigations such as microstructure, mechanical properties and grain size analysis were performed Tensile and Charpy impact tests specimens were machined out of the central part of the rolled billets. The microstructure of the specimens was examined for each experimental condition using optical microscopy. The results indicate that increasing the reheating temperature above the dissolution temperature of Nb (C, N) improved the impact energy values. By increasing the cooling rate from 0.5 to 1.5 ºC/s both tensile strength and impact toughness were improved. High elongation percent was also observed on samples reheated at higher temperature and/or cooled with the higher cooling rates. The obtained mechanical properties were related to the characteristics of microstructural components including acicular ferrite, retained austenite, pearlite and ferrite. 2010 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46415799017 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4 Vol.40 |
| title | Effect of thermo-mechanical parameters on microstructure and mechanical properties of microalloyed steels |
| topic | Física, Astronomía y Matemáticas Niobium hot rolling microstructure Microalloyed steel mechanical properties |
| url | https://www.redalyc.org/articulo.oa?id=46415799017 |