Developing very hard nanostructured bainitic steel

被引：42

作者：

Amel-Farzad, H. ^{[1
,2
,3
]}

Faridi, H. R. ^{[1
]}

Rajabpour, F. ^{[2
]}

Abolhasani, A. ^{[2
]}

Kazemi, Sh ^{[2
]}

Khaledzadeh, Y. ^{[2
]}

机构：

[1] Hamedan Univ Technol, Dept Mat Engn & Met, Hamadan, Iran

[2] Bu Ali Sina Univ, Dept Mat Engn & Met, Fac Engn, Hamadan, Iran

[3] Tarbiat Modares Univ, Dept Mat Engn, Fac Engn, Tehran, Iran

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 559卷

关键词：

Nanostructure; Alloy Steel; Bainite; Hardness; LOW-TEMPERATURE BAINITE; TRANSFORMATION; CARBON;

D O I：

10.1016/j.msea.2012.08.020

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Novel nanostructured high carbon high silicon, carbide-free bainitic steels with very high strength and good ductility have been developed in the recent decade. In this work, an alloy with a high carbon content and no manganese was designed and cast. The prepared samples were heat treated through an austempering process in the range 200-350 degrees C. Optical and scanning electron microscopes and XRD were used to analyze the microstructures precisely. Bainitic ferrite plates of just a few tens of nanometer thickness were obtained with the hardness of 697 +/- 6 HV. It is reasonable to say that the unprecedented hardness values obtained in this work are mostly caused by the extraordinary carbon content of the alloy. (C) 2012 Published by Elsevier B.V.

引用

页码：68 / 73

页数：6

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