当前位置: X-MOL 学术Micron › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Mechanism of pitting corrosion induced by inclusions in Al-Ti-Mg deoxidized high strength pipeline steel.
Micron ( IF 2.5 ) Pub Date : 2020-06-03 , DOI: 10.1016/j.micron.2020.102898
Yanhui Hou 1 , Jingru Wang 1 , Linli Liu 1 , Guangqiang Li 1 , Dongyu Zhai 2
Affiliation  

In order to reveal the mechanism of galvanic pitting corrosion initiation induced by typical complex inclusions in Al-Ti-Mg deoxidized high strength pipeline steel, first-principles calculations, combining with immersion tests, scanning electron microscopy was used to study the correlation between electronic work function and galvanic corrosion of Al-Ti-Mg killed steel. The results show that MnS inclusions act as anodes in the electrochemical environment, preferentially corroding and dissolving; MgAl2O4 and Al2O3 inclusions act as cathodes, leading to the corrosion of Fe matrix; different end planes of MgTiO3 and MgTi2O4 act as both anodes and cathodes, but they have little effect on pitting corrosion. Microcrevices on the MgTiO3 and MgTi2O4 inclusions boundary are the main cause of matrix dissolution.



中文翻译:

Al-Ti-Mg脱氧高强度管线钢中夹杂物引起的点蚀的机理。

为了揭示Al-Ti-Mg脱氧高强度管线钢中典型的复杂夹杂物引起的电蚀腐蚀的机理,采用第一性原理计算,并结合浸没试验,采用扫描电子显微镜研究了电子功之间的相关性。 Al-Ti-Mg镇静钢的功能和电腐蚀 结果表明,MnS夹杂物在电化学环境中起阳极作用,优先腐蚀和溶解。MgAl 2 O 4和Al 2 O 3夹杂物充当阴极,导致Fe基体腐蚀。MgTiO 3和MgTi 2 O 4的不同端面作为阳极和阴极,但它们对点蚀的影响很小。上为MgTiO Microcrevices 3和MGTI 2 ö 4夹杂边界是基质溶解的主要原因。

更新日期:2020-06-03
down
wechat
bug