Influence of the microstructure on the tensile and impact properties of a 14Cr ODS steel bar

被引：43
|
作者：
Garcia-Junceda, A. [1 ]
Hernandez-Mayoral, M. [1 ]
Serrano, M. [1 ]
机构：
[1] CIEMAT, Struct Mat Div, Dept Technol, Madrid 28040, Spain
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 556卷
关键词：
ODS ferritic steel; Anisotropy; Delamination; Tensile test; Charpy impact test; STRENGTHENED FERRITIC STEELS; MECHANICAL-PROPERTIES; ALLOYS; TEMPERATURE; DELAMINATION; DEFORMATION; TEXTURE;
D O I：
10.1016/j.msea.2012.07.051
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A Fe-14Cr-1W-0.4Ti-0.3Y(2)0(3) ferritic steel bar was characterised by different microstructural techniques in order to evaluate the link between its microstructure and the mechanical properties achieved. This bar was produced by mechanical alloying of a pre-alloyed gas atomised powder with yttria particles, followed by hot extrusion and subsequently annealing. The knowledge of the microstructure of this 14Cr oxide dispersion strengthened (ODS) steel allows for the explanation of the mechanical properties observed, such as the decrease of the ductility found in the transverse orientation of the bar, the existence of zig-zag crack paths in the broken specimens after the impact tests at low temperatures and the appearance of delaminations when the temperature is increased. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：696 / 703
页数：8
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