Long-term corrosion behavior of martensitic steel welds in static molten Pb-17Li alloy at 550 °C

被引：30
作者：
Chen, Xizhang [1 ,2 ]
Yuan, Qibing [2 ]
Madigan, Bruce [3 ]
Xue, Wei [1 ]
机构：
[1] Wenzhou Univ, Sch Mech & Elect Engn, Wenzhou 325035, Peoples R China
[2] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China
[3] Montana Tech Univ, Butte, MT USA
来源：
CORROSION SCIENCE | 2015年 / 96卷
基金：
中国国家自然科学基金;
关键词：
Steel; Weight loss; Welding; High temperature corrosion; CLAM STEEL; LIQUID PB-17LI; EUTECTIC PB-17LI; LEAD-LITHIUM; COMPATIBILITY; LIPB; EUROFER; TEMPERATURE; OXYGEN;
D O I：
10.1016/j.corsci.2015.04.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion behavior of 9Cr-based martensitic steel weldments was investigated in static molten Pb-17Li at 550 degrees C for 3000 and 5000 h. Microscopic investigation of corroded surfaces revealed corrosion pits, grooves, jagged traces and their formation mechanisms are developed. Variations in surface composition as a function of exposure time were detected. The weight loss, hardness and corrosion rate increase as exposure time increases. The corrosion rate was affected significantly by concentration of Cr near weld surface. The corrosion mechanism is attributed to the corrosive attack on the grain boundaries and preferential dissolution of the main elements from various phases in microstructure. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：178 / 185
页数：8
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