Niobium in Microalloyed Structural and Engineering Steels


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The use of Niobium as a microalloying element is particularly beneficial in increasing strength and toughness through its ability to control austenite grain size during reheating, and via grain refinement and precipitation hardening after austenite transformation. Steels with lower carbon contents can thus be utilised, further enhancing toughness and weldability.



Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran




C. Klinkenberg, "Niobium in Microalloyed Structural and Engineering Steels", Materials Science Forum, Vols. 539-543, pp. 4261-4266, 2007

Online since:

March 2007




[1] B. Donnay and H. Grober, Niobium Science & Technology, Int. Symposium Niobium 2001, Orlando (Florida, USA), pp.777-800.

[2] J.Y. Yoo, S.T. Hong, W.Y. Choo, HSLA Steels '95, CSM, Beijing (China), 1995, pp.203-207.

[3] J.M. Gray, A.J. DeArdo, HSLA Steels Metallurgy and Applications, ASM Int., USA, 1986, pp.83-96.

[4] NPC and RWTH-Aachen, unpublished research work.

[5] K. Hulka, H. -G. Hillenbrand, F. Heisterkamp, K.A. Niederhoff, Microalloying '95, ISS publ., pp.235-248.

[6] H. Sekine et al., Tetsu to Hagane, 56 (1970), 5, p.569.

[7] Bleck, W.; Hippenstiel, F.: Microalloying in case hardening steels, Proc. HSLA Steels 2000, The 4th International Conference on HSLA steels. Xi'an, China, Oct. 30 - Nov. 2, 2000, (2000), page 98-104.


[8] W. Bleck, G Pariser, S. Trute, C. Klinkenberg, Proc. of THERMEC'2003, Ed. T. Chandra, J. M. Torralba, T. Sakai, Madrid (ES), Mat. Sci. Forum Vols. 426-432, 2003 ttp trans tech publications, pp.1201-1206.


[9] T.D. Davies et al., Fundamentals of Microalloying Forging Steels, TMS, Warrendale (PA), 1987, pp.435-460.

[10] S. Hock, W. Trojahn, A. Klenk, F. Wilke; Konstruktion, Heft 1/2, 2003, p. IW3-IW4.

[11] S. Engineer, Thyssen Edelstahl Techn. Berichte 7 (1981), pp.3-4.

[12] H. Zhang et al., THERMEC-88, ISIJ, Tokyo (Japan), 1988, pp.527-534.

[13] L. Bäcker et al., HSLA Steels Technology and Applications, ASM, Metals Park (OH), 1984, pp.1025-1035.

[14] A.A. Petrunenkov, K. Hulka, Niobium Technical Report, NbTR 15/90, CBMM, São Paolo (Brazil), April (1990).

[15] G. Tither, Niobium Science & Technology, Int. Symposium Niobium 2001, Orlado (Florida, USA), pp.845-872.

[16] A.K. Padwardhan, M.L. Mehta, Arch. Eisenhüttenwesen 52, (1981), pp.225-229.