NDLI: The effect of the trace elements additions on the character of the grain boundary population in high purity a-iron.

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The effect of the trace elements additions on the character of the grain boundary population in high purity a-iron.

Content Provider	CiteSeerX
Author	Tacikowski, M. Coze, J. Le Driver, J. Kolanski, A.
Abstract	Abstract. The grain boundary nlisorientations and CSL frequencies in ultra high purity a-iron and iron doped with carbon (up to 200ppm) and sulphur (about 70ppm) have been determined by Electron Backscattered Diffraction to examine the effect of these elements on the character of the grain boundary population (CGBP). It was found that the binary Fe-S alloy exhibits a much higher fraction of low angle boundaries (LANGB) than iron and the other alloys, including the ternary Fe-C-S alloy. The effect of the recrystallization annealing temperature on the CGBP has been also examined; the LANGB frequency decreases with increasing temperature. In the Fe-S alloy this effect is shifted towards a higher temperature range (725-870 "C). Also the initially high frequency of LANGB decreases with annealing time and resulting grain growth. The increased hct ion of LANGB in the Fe-S alloy is interpreted as result of S reducing the rate of LANGB elimination, by a sulphur segregation dragging effect. The effect of C in the Fe-C-S alloy is attributed to the observed decrease of sulphur segregation to the grain boundaries.
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Subject Keyword	Grain Boundary Population Trace Element Addition High Purity A-iron Sulphur Segregation Fe-s Alloy Low Angle Boundary Ternary Fe-c-s Alloy Electron Backscattered Diffraction Langb Frequency Grain Boundary Nlisorientations Grain Growth Csl Frequency Langb Elimination Observed Decrease Binary Fe-s Alloy Grain Boundary High Frequency Fe-c-s Alloy Ultra High Purity A-iron Temperature Range Increased Hct Ion
Content Type	Text
Resource Type	Article

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