Hydrogen-Induced Delayed Fracture in a 1.5 GPa Dual-Phase Steel via Coalescence of Surface and Sub-surface Cracks

被引：4

作者：

Varanasi, Rama Srinivas ^{[1
]}

Koyama, Motomichi ^{[1
]}

Shibayama, Yuki ^{[1
,2
]}

Chiba, Shuya ^{[1
,2
]}

Ajito, Saya ^{[1
]}

Hojo, Tomohiko ^{[1
]}

Akiyama, Eiji ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, 2-1-1 Katahira,Aoba Ku, Sendai 9808577, Japan

[2] Tohoku Univ, Grad Sch Engn, 6-6-01-2 Aramaki Aza Aoba,Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2023年 / 54卷 / 08期

关键词：

FERRITE; MARTENSITE; BEHAVIOR; DIFFRACTION;

D O I：

10.1007/s11661-023-07096-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hydrogen embrittlement susceptibility of a 1.5 GPa class ferrite/martensite dual-phase steel was evaluated using the U-bend test. Hydrogen-induced delayed fracture occurs via the coalescence of surface and sub-surface cracks. While surface cracking is caused by the growth of pre-existing cracks formed during the U-bending, sub-surface cracks are formed by tensile stress that evolved during reloading. Despite the non-monotonic stress gradient across the U-bent cross-section, the crack propagation mechanism for surface and sub-surface cracks is identical.

引用

页码：2989 / 2997

页数：9

共 12 条

[1] Hydrogen-Induced Delayed Fracture in a 1.5 GPa Dual-Phase Steel via Coalescence of Surface and Sub-surface Cracks
Rama Srinivas Varanasi
Motomichi Koyama
Yuki Shibayama
Shuya Chiba
Saya Ajito
Tomohiko Hojo
Eiji Akiyama
Metallurgical and Materials Transactions A, 2023, 54 : 2989 - 2997
[2] Mixed type brittle fracture in 1.5 GPa dual-phase steel via {100} ferrite cleavage cracking
Varanasi, Rama Srinivas
Koyama, Motomichi
Shibayama, Yuki
Akiyama, Eiji
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2022, 857
[3] Enhanced Hydrogen Delayed Fracture of 1.5 GPa Hot Stamping Steel Sheet with Sheared Surface by Double Punching Method
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Seung-Chae Yoon
Hye-Jin Kim
Myoung-Gyu Lee
International Journal of Precision Engineering and Manufacturing, 2023, 24 : 173 - 186
[4] Enhanced Hydrogen Delayed Fracture of 1.5 GPa Hot Stamping Steel Sheet with Sheared Surface by Double Punching Method
Kim, Ji-Young
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[7] Correlation of Mechanical Properties with Fracture Surface Features in a Newly Developed Dual-Phase Steel
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[10] Delayed fracture properties of 1500 MPa bainite/martensite dual-phase high strength steel and its hydrogen traps
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