Investigations on Microstructures and Toughness of Fe-B Cast Alloy Containing Titanium and Nitrogen

The effects of titanium and nitrogen elements on the microstructure and impact toughness of the Fe-B alloy have been studied. The results show that the borides are refined after the additions of titanium and nitrogen elements. With the additions of titanium and nitrogen, titanium nitrides are formed...

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Veröffentlicht in:	Journal of materials engineering and performance 2014-02, Vol.23 (2), p.673-678
Hauptverfasser:	Yi, Dawei, Zhang, Zhiyun, Fu, Hanguang, Yang, Chengyan
Format:	Artikel
Sprache:	eng
Schlagworte:	Characterization and Evaluation of Materials Chemistry and Materials Science Condensed matter: structure, mechanical and thermal properties Corrosion and Coatings Engineering Design Exact sciences and technology Fatigue, brittleness, fracture, and cracks Materials Science Mechanical and acoustical properties of condensed matter Mechanical properties of solids Physics Quality Control Reliability Safety and Risk Tribology Tribology and hardness
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Beschreibung
Zusammenfassung:	The effects of titanium and nitrogen elements on the microstructure and impact toughness of the Fe-B alloy have been studied. The results show that the borides are refined after the additions of titanium and nitrogen elements. With the additions of titanium and nitrogen, titanium nitrides are formed in the Fe-B alloy. Titanium nitride can act as effective heterogeneous nuclei of primary austenite, and promote the refinement of austenite and boride. After heat treatment, the impact toughness of Fe-B alloys modified by titanium and nitrogen elements is higher than that of ordinary alloy.
ISSN:	1059-9495 1544-1024
DOI:	10.1007/s11665-013-0787-5