Toughness of Advanced High Strength Bainitic Steels

被引：10
|
作者：
Caballero, F. G. [1 ]
Chao, J. [1 ]
Cornide, J. [1 ]
Garcia-Mateo, C. [1 ]
Santofimia, M. J. [2 ,3 ]
Capdevila, C. [1 ]
机构：
[1] CSIC, CENIM, Dept Met Phys, Avda Gregorio Amo 8, E-28040 Madrid, Spain
[2] Netherlands Inst Metals Res, NL-2628 CD Delft, Netherlands
[3] Delft Univ Technol, Dept Mat Sci & Engn, NL-2628 CD Delft, Netherlands
来源：
THERMEC 2009, PTS 1-4 | 2010年 / 638-642卷
关键词：
toughness; coalesced bainite; steels; COMPOSITION PROPERTY APPROACH; SILICON STEELS; PART; DESIGN; CARBON;
D O I：
10.4028/www.scientific.net/MSF.638-642.118
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Carbide free bainite has achieved the highest strength and toughness combinations to date for bainitic steels in as-rolled conditions By alloying designing and with the help of phase transformation theory, It was possible to improve simultaneously the strength and toughness because of the ultra-fine grain size of the bainitic ferrite plates Ultimate tensile strengths ranging from 1600 MPa to 1800 MPa were achieved while keeping a total elongation higher than 10 %. Their toughness at room temperature matches tempered martensitic steels, known to be the best-in-class regarding this property. However, it has been observed that the presence of coalesced bainite leads to a dramatic deterioration in toughness in these novel high strength bainitic steels.
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页码：118 / +
页数：2
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