Development of hot stamping grade steel with improved impact toughness by Nb microalloying

Autor:	Santosh Kumar, S. K. Dhua, Deepa Murugesan, Bhaw Nath Thakur
Rok vydání:	2018
Předmět:	Materials science Impact toughness Metallurgy 02 engineering and technology Hot stamping 021001 nanoscience & nanotechnology Carbon alloy Microstructure 020501 mining & metallurgy Pencil (optics) 0205 materials engineering Martensite Rolling mill 0210 nano-technology
Zdroj:	Materials Today: Proceedings. 5:16887-16892
ISSN:	2214-7853
DOI:	10.1016/j.matpr.2018.04.091
Popis:	Low carbon alloy steels, one alloyed with B and Cr and other alloyed with B, Cr and Nb were made and cast into pencil ingots. These ingots were hot-rolled to 2 mm sheets suitable for hot stamping application in an experimental rolling mill and a detailed study was made on the effect of various alloying elements on the microstructure and mechanical properties of these steels. A significantly higher impact toughness (42 J) could be achieved in the as-rolled and water-quenched Nb-Cr-B steel in comparison to Cr-B steel under similar processing condition. Microstructural refinement of martensite must be the reason for achieving high impact toughness.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a98203f23aacfd464a7f81b68e18c93a https://doi.org/10.1016/j.matpr.2018.04.091 Zobrazit plný text záznamu Full Text from ScienceDirect