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Breakdown of primary grain boundary inhibition in 3 pct si-fe sheet

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Abstract

Grain boundary inhibition in 11-mil cold rolled decarburized 3 pct Si-Fe sheet was observed to break down by isothermal annealing at temperatures in excess of 1075°C. Small MnS particles (-r < ~260Å) responsible for inhibiting primary grain growth in this material were observed to undergo complete dissolution within 3 min at temperatures of 1100°C and higher. Calculated dissolution rates were in good agreement with this observation. The dissolution of these particles produced appreciable primary grain growth during the early stages of (110)[00l] secondary recrystallization which was responsible for an overall reduction in the volume percent of (H0)[00l] grains produced on prolonged isothermal annealing at temperatures above 1075°C.

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Authors and Affiliations

  1. Magnetics Department, Westing-house Research Laboratories, Research and Development Center, 15235, Pittsburgh, Pa.

    W. M. Swift (Senior Engineer)

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  1. W. M. Swift
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Swift, W.M. Breakdown of primary grain boundary inhibition in 3 pct si-fe sheet. Metall Trans 4, 841–845 (1973). https://doi.org/10.1007/BF02643095

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  • DOI: https://doi.org/10.1007/BF02643095

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