MICROSTRUCTURE AND PROPERTIES OF HIGH BORON BEARING STEEL

• 出 处: Acta Metallurgica Sinica(English Edition)
• 发表日期: 2002年02期
• 关键词: boron titanium precipitated stainless broken steels austenite ductility rolling

High boron bearing steel, in which boron homogeneously distributed, was successfully produced in the vacuum induction furnace. The microstructural observations of cast and hot rolled steels showed that the addition of titanium can eliminate the quantity of ferrous borides precipitated at the grain boundaries and break the net microstructure, as a result, its hot workability is improved. The titanium boride TiB2 homogeneously distributes in the matrix of a-Fe. The parameters of hot rolling process. including preheated temperature, initial rolling temperature, finished rolling temperature and the total deformation, have been optimized.

The microstructural observations of cast and hot rolled steels showed that the addition of titanium can eliminate the quantity of ferrous borides precipitated at the grain boundaries and break the The titanium boride TiB2 homogeneously distributed in the matrix of a-Fe. The parameters of the hot rolling process. including preheated temperature, initial rolling temperature, finished rolling temperature and the total deformation, have been optimized.