Effect of Mn content on microstructure, tensile and impact properties of SA508Gr.4N steel for reactor pressure vessel

Autor:	Shi-bin Qiao, Zhi-qiang Yang, Zhen Wang, Zheng-dong Liu, Xi-kou He
Rok vydání:	2020
Předmět:	Toughness Materials science Mechanics of Materials Transmission electron microscopy Scanning electron microscope Ultimate tensile strength Materials Chemistry Metals and Alloys Grain boundary Composite material Microstructure Diffractometer Hardenability
Zdroj:	Journal of Iron and Steel Research International. 27:461-470
ISSN:	2210-3988 1006-706X
Popis:	The effect of manganese (Mn) on the microstructure, tensile and impact properties of SA508Gr.4N steel has been experimentally investigated. The influence of Mn content on the substructure of SA508Gr.4N steel was investigated using the scanning electron microscope, electron back-scattered diffractometer and transmission electron microscope. It was found that the increased Mn content had a beneficial effect on both strength and toughness. Examination of microstructure revealed smaller size of block and larger number of high-angle grain boundaries with higher Mn content. The change of the ultimate tensile strength and toughness with increasing Mn content was attributed to the increased hardenability, the number of high-angle grain boundaries and the crack propagation path by the block refining.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3d7b61aef127f2a3e3dc6dc36be1aec3 https://doi.org/10.1007/s42243-020-00393-1 Zobrazit plný text záznamu Full text from SpringerLink