The effect of nonmetal inclusions and microstructure on local corrosion of carbon and low-alloyed steels

被引：37
|
作者：
Reformatskaya, II
Rodionova, IG
Beilin, YA
Nisel'son, LA
Podobaev, AN
机构：
[1] LY Karpov Phys Chem Res Inst, Moscow 103064, Russia
[2] IP Bardin Cent Ferrous Met Res Inst, Moscow 107005, Russia
[3] Oil Co YuKOS, Moscow, Russia
来源：
PROTECTION OF METALS | 2004年 / 40卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1023/B:PROM.0000043062.19272.c5
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The resistance of carbon and low-alloyed steels to local corrosion is shown to be directly determined by their phase-structure, rather than chemical, composition. A correlation between the presence of various nonmetal inclusions in steels and the local corrosion rate is revealed. Inclusions containing Ca and S are shown to be the most corrosive, manganese sulfide inclusions act less corrosively, and silicates are the least active. The formation of lamellar pearlite in the steel structure also impairs its resistance to local corrosion. By providing metal pure of corrosive nonmetallic inclusions at a melting stage and ensuring the pearlite spheroidizing during the stages of thermal treatment and processing, it is possible to enhance its resistance to total and local corrosion.
引用
收藏
页码：447 / 452
页数：6
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