Improvement in Mechanical Behavior of Expulsion with Heat treated Thermite Welded Rail Steel
Thermite welding is mainly used in world. The
reasons why the thermite welding method is widely used are
that the equipment has good mobility and total working time
of that is shorter than that of the enclosed arc welding method
on site. Moreover, the operating skill, which required for
thermite welding, is less than that of for enclosed arc welding.
In the present research work, heat treatment and combined
'expulsion and heat treatment' techniques were used improve
the mechanical properties and weldment structure. The
specimens were cut in the transverse direction from expulsion
with Heat treated and heat treated Thermite Welded rails.
Specimens were prepared according to AWS standard and
subjected to tensile test, Impact test and hardness and their
results were tabulated. Microstructural analysis was carried
out with the help of SEM. Then analyze to effect of heat
treated and 'expulsion with heat treated' with the properties of
their thermite welded rails. Compare the mechanical and
microstructural properties of thermite welded rails between
heat expulsion with heat treated and heat treated. Mechanical
and microstructural response expulsion with heat treated
thermite welded rail is higher value as compared to heat
treatment.
[1] Bush, R. F., "Rail Failure Statistics," A.R.E.A. Proceedings, Vol. 73,
Bulletin 638, 1972.
[2] Ishida.M., Miura.S, Kono, A.: Track dynamic Model and its analytical
results, RTRI REPORT 11-12, February 1997 (in Japanese)
[3] M.K. Mukhopadhyay, An investigation in to Rail failure, IIM Metal
News, Volume 10, P 22-23, June 2007.
[4] Y.Li, G. Kang, C. Wang, P. Dou and J.Wang. Vertical short-crock
behavior and its application in rolling contact fatigue. Int. J. Fatigue.
Vol.28 (7), 2006, pp. 804-811.
[5] Michael W. Brown, Steven Hemsworth, Sik Lun Wong, Sirius, Rolling
contact fatigue crack growth in rail steel. The university of Sheffield
(U.K), PP. 29-31, 1996.
[6] P.J. Webster, G. Mills, X.D. Wang, W.P. Kang and T.M. Holden,
Residual stresses in alumino-thermic welded rails. J. Strain Analysis.
Vol. 32(6), 1997, pp. 389-400
[7] Nenad Ilic, Milan T. Jovanovic, Misa Todorovid, Milan Trtanj, and
Petar Saponjic, Micro structural and Mechanical Characterization of
Postweld Heat- Treated Thermite Weld in Rails, Department of
Materials Science, Institute of Nuclear Sciences, Yugoslavia, PP. 242-
250, 1999.
[8] C.P.Lonsdale, Thermite rail welding: history, process developments,
current practices and outlook for the 21st century, metallurgical engineer
conrail technical services laboratory altoona, pa 16601.
[9] Anonymous, Annual Book of ASTM standards for Mechanical Testing
of Materials, Vol. 3, 1995
[1] Bush, R. F., "Rail Failure Statistics," A.R.E.A. Proceedings, Vol. 73,
Bulletin 638, 1972.
[2] Ishida.M., Miura.S, Kono, A.: Track dynamic Model and its analytical
results, RTRI REPORT 11-12, February 1997 (in Japanese)
[3] M.K. Mukhopadhyay, An investigation in to Rail failure, IIM Metal
News, Volume 10, P 22-23, June 2007.
[4] Y.Li, G. Kang, C. Wang, P. Dou and J.Wang. Vertical short-crock
behavior and its application in rolling contact fatigue. Int. J. Fatigue.
Vol.28 (7), 2006, pp. 804-811.
[5] Michael W. Brown, Steven Hemsworth, Sik Lun Wong, Sirius, Rolling
contact fatigue crack growth in rail steel. The university of Sheffield
(U.K), PP. 29-31, 1996.
[6] P.J. Webster, G. Mills, X.D. Wang, W.P. Kang and T.M. Holden,
Residual stresses in alumino-thermic welded rails. J. Strain Analysis.
Vol. 32(6), 1997, pp. 389-400
[7] Nenad Ilic, Milan T. Jovanovic, Misa Todorovid, Milan Trtanj, and
Petar Saponjic, Micro structural and Mechanical Characterization of
Postweld Heat- Treated Thermite Weld in Rails, Department of
Materials Science, Institute of Nuclear Sciences, Yugoslavia, PP. 242-
250, 1999.
[8] C.P.Lonsdale, Thermite rail welding: history, process developments,
current practices and outlook for the 21st century, metallurgical engineer
conrail technical services laboratory altoona, pa 16601.
[9] Anonymous, Annual Book of ASTM standards for Mechanical Testing
of Materials, Vol. 3, 1995
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:64984", author = "S.Rajanna and H.K.Shivanand and Akash Deep B.N", title = "Improvement in Mechanical Behavior of Expulsion with Heat treated Thermite Welded Rail Steel", abstract = "Thermite welding is mainly used in world. The
reasons why the thermite welding method is widely used are
that the equipment has good mobility and total working time
of that is shorter than that of the enclosed arc welding method
on site. Moreover, the operating skill, which required for
thermite welding, is less than that of for enclosed arc welding.
In the present research work, heat treatment and combined
'expulsion and heat treatment' techniques were used improve
the mechanical properties and weldment structure. The
specimens were cut in the transverse direction from expulsion
with Heat treated and heat treated Thermite Welded rails.
Specimens were prepared according to AWS standard and
subjected to tensile test, Impact test and hardness and their
results were tabulated. Microstructural analysis was carried
out with the help of SEM. Then analyze to effect of heat
treated and 'expulsion with heat treated' with the properties of
their thermite welded rails. Compare the mechanical and
microstructural properties of thermite welded rails between
heat expulsion with heat treated and heat treated. Mechanical
and microstructural response expulsion with heat treated
thermite welded rail is higher value as compared to heat
treatment.", keywords = "Expulsion, Heat treatment, Mechanical, Weldment.", volume = "3", number = "12", pages = "1637-5", }