Acta Mechanica Slovaca 2014, 18(2):82-87 | DOI: 10.21496/ams.2014.024
Influence of Vanadium Content on the Toughness and Hardness of High-alloyed Cr-Mo Steel
- 1 Faculty of Technical Sciences, University of Pristina, 7. Kneza Milosa Str. 38220 Kosovska Mitrovica, Serbia
- 2 Faculty of Technology Zvornik, Karakaj bb 75400 Zvornik, Republic of Srpska, Bosnia and Herzegovina
Characteristics of air hardening steel are high hardness and low impact toughness. In order to increase the impact toughness while retaining replace with the high hardness value numerous research added. One of the ways to achieve this is the alloying of specified steel with vanadium and application of appropriate heat treatment. Vanadium affects the solidification process of these alloys by narrowing of the temperature interval of crystallization. In addition, vanadium formed V6C5 carbides that block the growth of austenitic dendrites and structure makes fine-grained. Vanadium which forms V6C5 carbides is partly distributed between present phases in the steel, carbide (Cr,Fe)7C3 and austenite. Also, the presence of vanadium can enable the formation of (Cr,Fe)23C6 carbide and its precipitation in austenite during the cooling process. In local areas around fine carbide particles, austenite is transformed into martensite. In other words vanadium reduces the amount of remained austenite and so improves hardenbility of the steel. In this way, better technical characteristics of these steels are obtained.
Keywords: Vanadium, Impact Toughness, Hardness, Microstructure
Published: October 31, 2014 Show citation
| ACS | AIP | APA | ASA | Harvard | Chicago | Chicago Notes | IEEE | ISO690 | MLA | NLM | Turabian | Vancouver |
References
- Vodopivec F., Šuštatrčić B., Vojvodić T. J., Kosec G., Charpy notch toughness and hardness of reheated martensite and lower bainite, Metalurgija. vol. 49, no. 3, 2010, p.149-154.
- Wang Y., He D., Yu C., Jiang J., Effect of vanadium on the Properties of Fe-Cr-C Hardfacing Alloy, Hanjie Xuebao/Trasaction of the China Welding Institution, vol. 31, no. 5, 2010, p.61-64.
- Radović N., Koprivica A., Glišić D., Fadel A., Drobnjak Đ., Influence of Cr, Mn and Mo on the Structure and Properties of V Micro-alloyed Medium Carbon Forging Steels, MjoM-Journal of Metalurgy. vol.16, no. 1, 2010, p.1-9.
- Schuman H., Metallography, translated from German, Faculty of Technology and Metallurgy, Belgrade, 1989.
- Radulović M., Fiest M., Peev K., Effect of Rare Earth Elements on Micro-structure and Properties of High Chromium White Iron, Materials Science and Technology, 1994, vol. 10, no. 12, 1057-62 CODEN: MSCTEP; ISSN: 0267-0836.
Go to original source... - Baker T.N., Processes, microstructure and properties of vanadium microalloyed steels. Materials Science and Technology, vol. 25, no. 9, 2009, p.1083-1107. Go to original source...
- Yang F., Haisheng S., Junfei F., Zhou X., An investigation of secondary carbides in the spray-formed, high alloyed Vanadis 4 stell during tempering, Elsevier, Materials characterization, vol 59, 2008, p. 883-889. Go to original source...
- Todić A. Čikara D., Todić T., Čamagić I., Influence of Vanadium on Mechanical Characteristics of Air-Hardening Steels, FME Transactions, vol. 39 no. 2, 2011 p.49-54.
This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.