EFFECT OF TRACE SULPHUR ON HOT PLASTICITY OF HIGH SPEED STEELS
by LUO Di; XING Guohua (Central Iron and Steel Research Institute. Ministry of Metallurgical Industry; Beijing); ZOU Huiliang (Shanghai Institute of Test Technics) (Manuscript received 20 January; 1982; revised manuscript 3 January; 1983)
Cite this article:
by LUO Di; XING Guohua (Central Iron and Steel Research Institute. Ministry of Metallurgical Industry; Beijing); ZOU Huiliang (Shanghai Institute of Test Technics) (Manuscript received 20 January; 1982; revised manuscript 3 January; 1983). EFFECT OF TRACE SULPHUR ON HOT PLASTICITY OF HIGH SPEED STEELS. Acta Metall Sin, 1983, 19(4): 117-120.
Abstract The effect of trace S on the hot plasticity of high speed steels has been examined. It was shown that the S content in W14Cr4VMn steel decreased from 0.01% down to a possible lowest limit of 0.002% the number of cycles of the hot torsion test increases about 20% under 950-1150℃. This indicates that the hot plasticity of the high speed steels may be deteriorated even if a trace S contained. AES was observed that the S segregation occurs along the austenite grain boundaries. The reason of the S segregation and its deterioration on the hot plasticity of the steels has also been discussed.
1 日本铁鋼协会编,铁鋼制造法,丸善株式会社,1972,p.17. 2 冶金工业部钢铁研究总院,大连钢厂,未公开发表材料,(1979) . 3 罗迪;邢国华;沈汝美;靳达申,待发表. 4 Seah, M. P.; Hondros, E. D., Proc. R. Soc. Lond., A335 (1973) , 191. 5 Helms, C. R., Interfacial Segregation, Eds. W. C. Johnson; J. M. Blakely, ASM, Ohio, 1979, p.215 6 渡辺利光;山本広一;南雲道彦;上野正勝;铁鋼,61(1975) ,S730. 7 McLean,D.,金属中的晶粒间界、杨顺华译,科学出版社,1965,p.101.6