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Environmentally assisted cracking in linepipe steels

Environmentally assisted cracking in linepipe steels
管线钢的环境辅助开裂
批准号:
462475-2013
负责人:
Kish, Joseph
金额:
$5.42万
依托单位:
依托单位国家:
加拿大
项目类别:
Collaborative Research and Development Grants
财政年份:
2014
资助国家:
加拿大
项目状态:
已结题
起止时间:
2014-01-01 至 2015-12-31

项目摘要

项目成果

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中文摘要
翻译
抗环境辅助开裂的管线钢微结构设计对于建造可靠的输送含硫气体的天然气管道具有重要意义。氢致开裂(HIC)和应力腐蚀开裂(SCC)现象涉及来自酸性气体的氢与钢中非金属夹杂物和析出物等杂质之间的相互作用。生产特殊的“酸性”钢,合金化以减少氢的吸收,并具有很高的内部清洁度。目前对HIC和SCC引发的精确机制的普遍理解限制了钢铁生产商以更高的强度或更低的成本开发更有效的产品的能力。
英文摘要
The design of linepipe steel microstructures that resist environmentally assisted cracking is important for the construction of reliable gas transmission pipelines that carry sour gas. The phenomena of hydrogen induced cracking (HIC) and stress corrosion cracking (SCC) involve interactions between hydrogen originating in the sour gas and impurities in the steel such as non-metallic inclusions and precipitates. Special 'sour service' steels are produced that are alloyed to reduce the absorption o hydrogen and have high internal cleanness. The current general understanding of the precise mechanisms involved in HIC and SCC initiation limit steel producers' ability to develop more effective products at higher strengths or lower cost.
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