Ultrafine-grained low carbon steels by severe plastic deformation

被引：1
|
作者：
Dobatkin, S. [1 ]
Zrnik, J. [2 ]
Mamuzic, I. [3 ]
机构：
[1] Russian Acad Sci, AA Baikov Inst Met & Mat Sci, Moscow, Russia
[2] Comtes FHT, Plzen, Czech Republic
[3] Univ Zagreb, Fac Met, Sisak, Croatia
来源：
METALURGIJA | 2008年 / 47卷 / 03期
关键词：
low carbon steel; severe plastic deformation (SPID); equal channel angular pressing; submicrocrystalline structure; strength;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The structure and properties of 0,14%C and 0,1% C-B low-carbon steels taken in two initial states, martensitic and ferritic-pearlitic, were studied after cold equal-channel angular (ECA) pressing. ECA pressing leads to the formation of only partially submicrocrystalline structure with a grain size of 150 - 300 nm, depending on the steel alloying and initial state. The finest structure with the elements of 190 nm in size is obtained in the 0,1% C - B steel microalloyed with boron. The strength of the 0,1% C - B steel after cold ECA pressing (R-m = 805-1235 MPa) meets the specifications of fasteners of the R80 - R120 strength grade. The strength of the deformed 0,14% C steel is close to the R80 strength grade.
引用
收藏
页码：181 / 186
页数：6
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