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ISIJ International; ISSN:0915-1559; VOL.53; NO.7; PAGE.1289-1291; (2013).
Tomohito Tanaka, Hideaki Sawada.
Advanced Technology Research Laboratories, Nippon Steel & Sumitomo Metal Corporation.
Summary of the Research paper:
The results presented in this work By Tanaka and Sawada demonstrate that the hot ductility is not affected by S addition in Fe or Ni addition in S killed Fe–Mn alloy drastically, however, co-addition of Ni and S is detrimental for hot ductility. The mechanism of grain boundary embrittlement enhancement by Ni addition is not related to the co-segregation of Ni and S and it was found the chemical environment change of segregated S by Ni addition plays an important role for the grain boundary cohesion in Fe. In this sense, it is expected that the grain boundary embrittlement due to segregation of other impurites such as Sb, P, H, Te etc. is also enhanced by addition of metal atoms that can offer more valence electrons to these embrittling elements than host metal can.
