کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
794767 | 902549 | 2011 | 6 صفحه PDF | دانلود رایگان |
The sensitivity to liquid sodium embrittlement, in the temperature range of 300–550 °C, of T91 martensitic steel has been studied according to tempering temperature. In air, the T91 steel is ductile. A ductile to brittle transition induced by liquid sodium has been observed. Liquid sodium acts as well on the crack initiation period as on the crack propagation one. In absence of external defect, it is found that sodium affects grain boundary strength and initiates an intergranular crack which then propagates by cleavage in the bulk.
► Sensitivity of a 9Cr1Mo martensitic steel to liquid sodium embrittlement effect of hardness controlled by tempering condition.
► Liquid sodium embrittlement occurs only for the hard material.
► Both intergranular fracture and cleavage are observed.
Journal: Journal of Materials Processing Technology - Volume 211, Issue 12, December 2011, Pages 2085–2090