Micromechanism of corrosion fracture of the plates of heat exchangers

被引：0
|
作者：
O. E. Narivs’kyi
机构：
[1] “Pavlohradkhimmash” Public Corporation Plant,
来源：
Materials Science | 2007年 / 43卷
关键词：
Heat Exchanger; Corrosion Product; Stress Corrosion; Hydrogen Embrittlement; Intergranular Fracture;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We have studied the micromechanism of corrosion fracture of heat-transfer plates of a heat exchanger. The operation of heat exchangers under conditions of contamination of the plates with a sediment from water leads to their local corrosion under the sediment. The conditions of operation of the heat exchangers being equal, heat-transfer plates made of AiSi316Ti steel worked 2.36 times as long as those of AiSi304L steel. The corrosion fracture of plates under the sediment began from pitting initiation near nonmetallic inclusions of a certain nature. Afterwards, these pittings built up into corrosion spots by the mechanism of stress corrosion and hydrogen embrittlement.
引用
收藏
页码：124 / 132
页数：8
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