In this investigation En 52 steel has been electroslag refined and the improvement in its hot ductility assessed using hot-torsion tests. The electroslag refining improved the hot workability considerably. The temperature at which peak ductility is obtained increased from 1325K in unrefined (as-cast) steel to 1425 K in refined steel. The improvement in hot ductility in electroslag-refined steel has been attributed essentially to the removal of non-metallic inclusions and the reduction in sulphur content.
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References
1.
HOLTZGRUBERW.: ‘Proc. 5th int. symp. on electroslag and other special remelting technology’, (eds. BhitG. K. and Simko-vitchA.), 70; 1975, Pittsburgh, Pa, Mellon Institute.
2.
SELLARSC. M. and MCGTEGARTW. J.: Int. Metall. Rev., 1972, 171
3.
ROSSARDC. and BLAINP.: Rev. Metal., 1958, 35573.
4.
JAINN. K.: PhD thesis, Indian Institute of Science, Bangalore, India, 1977.
5.
‘Annual book of ASTM standards’, 11, 119, Standard E45-76; 1976, Philadelphia, Pa, American Society for Testing and Materials.
6.
FIELDSD. S. and BACKOFENW. A.: Proc. ASTM, 1957, 571259.
7.
NAIRK. D. and SELLARSC. M.J. Inst. Eng. (India), 1975, 55, 135.
8.
HEBSURM. G., ABRAHAMK. P., and PRASADV. V. R. K..: Eng. Frac. Mech., to be published.
9.
KLEVEBRINGB.-I., BOGRENE., and MAHRSR.: Metall. Trans., 1975, 6A, 319.
10.
COWARDM. D., RICHARDSONG. J., and SELLARSC. M.: Met. Technol., 1977, 4, 75.
11.
GLADMANT., HOLMESB., and MCIVORI. D.: ‘Effect of second-phase particles on the mechanical properties of steel‘, 68; 1971, London, The Iron and Steel Institute.
12.
MCGTEGARTw. J. and GITTINSA.: ‘Sulfide inclusions in steels’, 798; 1974, Metals Park, Ohio, American Society for Metals.
