Z.X.Yuan
,
J.Jia
,
A.M.Guo
,
D.D.Shen
,
S.H.Song
,
J.Liu
金属学报(英文版)
The influence of tin on the hot ductility of a 0.15wt steel is investigated using a continuous-casting thermal simulator with three cooling rates. Tin can apparently deteriorate the hot ductility of the steel. Non-equilibrium grain boundary segregation of tin occurs during cooling and plays an important role in reducing the hot ductility of the steel. There is a critical cooling rate for the Sn segregation being between 5 and 20K/s.
关键词:
hot ductility
,
null
,
null
Z.X.Yuan
,
A.M.Guo
,
J.Liu
,
D.D.Shen
,
J.Jia
,
S.H.Song
金属学报(英文版)
Antimony grain boundary segregation in Fe-2Mn-Sb stucture steels has been studied through measurements of the ductile-brittle transition temperature in conjunction with scanning electron microscopy ,Auger electron spectroscopy and secondary ion mass spectroscopy.The research result reveals that during tempering or ageing after quenching at 980℃,Sb segregates to grain boundaries with both equilibrium and nonequilibrium natures and brings about temper embrittlement in the steels.Cerium can relieve temper embrittlement of the steels and its segregation to grain boundaries may play an important role in reducing this embrittlement.
关键词:
segregation
,
null
,
null
