Role of Nonmetallic Inclusions in Hydrogen Embrittlement of High-Strength Carbon Steels with Different Microalloying

被引：23
|
作者：
Madelen, Olga [1 ]
Todoshchenko, Ingrid [1 ]
Yagodzinskyy, Yuriy [1 ]
Saukkonen, Tapio [1 ]
Hanninen, Hannu [1 ]
机构：
[1] Aalto Univ, Sch Engn, Dept Engn Design & Prod, Aalto 00076, Finland
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2014年 / 45A卷 / 11期
关键词：
Hydrogen Embrittlement; Trapping Site; Hydrogen Charge; Thermal Desorption Spectroscopy; Constant Extension Rate;
D O I：
10.1007/s11661-014-2447-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High-strength carbon steels of 1200 MPa strength level with different microalloying were tensile tested at constant extension rate and constant load under continuous electrochemical hydrogen charging. The results show that hydrogen markedly reduces elongation and time to fracture of all the studied steels. Fractography of the steels shows that nonmetallic inclusions (NMIs) play the major role in crack initiation in hydrogen-charged specimens. The role of NMIs in the hydrogen-induced fracture of steels is discussed.
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页码：4742 / 4747
页数：6
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