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.

引用

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页码：118 / +

页数：2

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