EFFECT OF RARE EARTH ADDITION ON PROPERTIES OF CONTROLLED ROLLING LOW CARBON MnMoNb FERRITE STEEL.

被引：0

作者：

Jiang, Jingkai ^{[1
]}

Xiao, Lianfang ^{[1
]}

You, Delin ^{[1
]}

Shu, Jiasheng ^{[1
]}

Ren, Li'e ^{[1
]}

机构：

[1] Baotou Research Inst of Metallurgy, China, Baotou Research Inst of Metallurgy, China

来源：

Jinshu Xuebao/Acta Metallurgica Sinica | 1987年 / 23卷 / 02期

关键词：

IRON AND STEEL METALLOGRAPHY - Microstructures - METALLOGRAPHY - Ferrite - METALS AND ALLOYS - Fracture - ROLLING MILL PRACTICE;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A study was made of the effect of rare earth (RE) additions on the microstructure and fractograph of the controlled-rolling, low-carbon MnMoNb ferrite steel. After further refinement of grains, as well as the reduction and refinement of bainite and martensite, a mixed structure of equiaxial and acicular ferrite in the steel may be achieved by RE additons. The ultramicrostructural RE inclusion, permitting the formation of RE-containing steel for the refinement of grains in the process of controlled rolling, is observed on the fracture surface. Therefore, a satisfactory combination of mechanical properties, such as improved strength and impact toughness, may be approached for steel containing RE additions.

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