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Wire & Cable ASIA – September/October 2007 55 Wir & Cable ASIA – July/August 12
Limited effect of boron alloying was apparent at the
investigated nitrogen levels on wire properties in particular
torsional ductility.
Reduced ultimate tensile strength was observed in the
High B steel.
Acknowledgements
The International Wire & Machinery Association
Educational Trust Fund is gratefully acknowledged for
financial support as well as The Timken Company for
supplying the laboratory prepared steels.
The support of the sponsors of the Advanced Steel
Processing and Products Research Centre, an industry/
university cooperative research centre at the Colorado
School of Mines is gratefully acknowledged.
References
1. R.J. Glodowski, “Nitrogen strain aging in ferritic steels”, Wire Journal
Intl., pp. 70-75, Jan. 2005.
2. B. Yalamanchili, J.B. Nelson, P.M. Power and
D. Lanham, “North Star Steel Texas’s experience with boron additions
to low-carbon steel”, Wire Journal Intl., pp. 90-94, Nov. 2001.
3. B. Yalamanchili, P.M. Power and D. Lanham, “A technical review of
industrial practices for decreasing the strain hardening rate of low
carbon steel wire”, Wire Journal Intl., pp. 108-111, July 2005.
4. I.D. McIvor, “Microalloyed very low carbon steel rod”, Ironmaking and
Steelmaking, Vol. 16, No. 1, pp. 55-63, 1989.
5. A.R. Franks and A. Kirkcaldy, “The effect of boron on the properties of
electric arc-sourced plain carbon wiredrawing qualities”, Wire Journal
Intl., pp. 100-113, May 1998.
6. B. Marin, A. Bell, Z. Idoyaga, V. Colla and L.M. Fernandez,
“Optimisation of the Influence of Boron on the Properties of Steel”,
ECSC Technical Steel Research Contract No 7210-PR/355, 2007.
7. P. Hesse and M. Klemm, “Additions of Boron in High Carbon Wire
Rods”, Proc. of the Wire Association International International
Conference, Zakopane, Poland, 1999.
8. E. De Moor, D.K. Matlock, P.M. Power, B. Yalamanchili, W. Van
Raemdonck, R.J. Glodowski, “Effect of Boron Alloying on the
Mechanical Properties of High Carbon Wire Rods”, Proceedings of
Interwire 2011, Atlanta, GA, Wire Association International.
9. Ph. Maitrepierre, J. Rofes-Vernis and D. Thivellier, “Structure-Proper-
ties Relationships in Boron Steels,” Proc. of the Intl. Symposium on
Boron in Steel, eds. S.K. Banerji and J.E. Morral, AIME, Milwaukee, Wi.
Sept. 18, 1979, pp. 1-18.
10. D.T. Llewellyn and W.T. Cook, “Metallurgy of Boron-Treated Low-Alloy
Steels”, Metals Tech., Vol. 1, no. 12, 1974, pp. 517- 529.
11. M. Ueda and K. Uchino, “Steel Rail Having Excellent Wear Resistance
and Internal Breakage Resistance, and Method of Producing the
same,” U.S. Patent 5 830 286, Nov. 1998.
Advanced Steel Processing
and Products Research Centre
Colorado School of Mines
1500 Illinois Street
Golden, CO 80401, USA
Tel: +1 303 273 3025
Fax: +1 303 273 3016
Email:
Website:
NV Bekaert SA
President Kennedypark 18
BE-8500, Kortrijk
Belgium
Tel: +32 562 305 11
Fax: +32 562 305 43
Website:
UTS, MPa UE, % TE, % Nt Nb
Base 2106 1.1 2.1 41 12
B 2096 1.3 2.4 42 11
High B 2087 1.4 2.5 41 9
❍
❍ Table 4: Tensile properties Ultimate Tensile Strength (UTS), Uniform Elongation (UE), and Total Elongation (TE) of the wires drawn to
1mm after patenting
UTS, MPa UE, % TE, % Nt Nb
Base 2263 0.4 1.5 35 11
B 2283 0.4 1.5 36 10
High B 2257 0.4 1.5 36 8
❍
❍ Table 5: Tensile properties Ultimate Tensile Strength (UTS), Uniform Elongation (UE), and Total Elongation (TE) assessed following
aging at 150 ºC for one hour of the wires drawn to 1mm after patenting
12. E. De Moor, D.K. Matlock, W. Van Raemdonck, B. Yalamanchili,
P.M. Power, R.J. Glodowski:“Effect of Boron Alloying on Austenite
Decomposition in 0.80C Wire Rod Grades”, Proc. of the Intl.Tech.
Conf. of the Wire Association Intl., Monterrey, Mexico, 18-20 Oct.
2010, pp. 1-6.