Influence of original structure and heating rate on the initial grain size of austenite in hypoeutectoid steel
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Rapid heating of hypoeutectoid steel 40 with original quenched and improved structures makes it possible to obtain a grain size of grade 14–15 (2.5 μ in diameter); rapid heating has little effect on the normalized steel.
Preliminary plastic deformation (∼ 30%) has no notable effect on the initial grain size of the steel with these original structures.
KeywordsGrain Size Austenite Heating Rate Plastic Deformation Notable Effect
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