Inclusion Characterization in High Strength Low Alloy Steel for Pipeline Application
In this work several methods including sulphur printing, modified spark spectrum analysis and SPEED-SEM-EDX methods were used to study the morphology, composition and distribution of inclusions in pipeline steel. The procedure for the lastmentioned method includes: metal sample preparation using Selective Potentiostatic Etching by Electrolytic Dissolution (SPEED) together with inclusion observation and detection using SEM-EDX equipment.The results of sulphur printing and spark spectrum analysis showed that there was a well-defined centerline containing relatively high concentrations of sulphur in the steel slab studied in this work.The results of SEM study showed that most inclusions found in the steel samples were globular in morphology, and roughly 2-5 micrometers in size.The inclusions were rich in sulphur and manganese.Some inclusions with a bright globular shape contained Al,Ca,Mn and S,and were likely composed of MnS,CaS and calcium aluminate. It was concluded that sulphur printing is a convenient and inexpensive method for inclusion analysis, Spark Spectrum Analysis provides a complete and self-contained technique for inclusion detection,and the SPEED-SEM-EDX procedure is best suited for in-situ and three-dimensional observation of inclusions.
Pipeline steel inclusion detection segregation sulphide continuous casting HIC cracking
YANG Yin-dong WU Paul ZHANG Guifang McLEAN Alex
Dept.Mat.Sci.&Eng.,University of Toronto, Ontario,Canada M5S 3E4 Dept.Mat.Sci.&Eng.,University of Toronto, Ontario,Canada M5S 3E4;Institute of Technology, Kunming Un
国际会议
The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)
北京
英文
271-276
2011-05-31（万方平台首次上网日期，不代表论文的发表时间）