期刊
JOURNAL OF NUCLEAR MATERIALS
卷 376, 期 3, 页码 312-316出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2008.02.032
关键词
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The susceptibility to liquid metal embrittlement (LME) of 316L and T91 steels by mercury has been studied at room temperature. A dedicated experimental device using center crack tension (CCT) specimens was built. We developed a specimen preparation procedure that must be rigorously applied in order to investigate the embrittling effect of Hg. The high strength ferritic-martensitic steel of type T91 is embrittled by Hg at room temperature over a large range of crosshead speeds,, between 6.67 x 10(-7) and 6.67 x 10(-3) m s(-1). More surprisingly, the austenitic steel of type 316L is also embrittled by Hg between 1.67 x 10(-8) and 2.5 x 10(-4) m s(-1). The fracture of the T91 and 316L CCT specimens in contact with Hg occurs by shear band decohesion over the above-mentioned range of crosshead speeds. (C) 2008 Elsevier B.V. All rights reserved.
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