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oto
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iticgrai
sTherateofhomoge
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3、Coarse
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s
Atthebegi
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cethesebou
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sformatio
startsfromformatio
ofamultitudeoffi
egrai
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dofthetra
sformatio
theauste
itewillbecomposedofagreatmultitudeoffi
egrai
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ssizeFurtherheati
gorholdi
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willcausecoarse
i
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sTheprocessofgrai
coarse
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ergydecreasesa
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o
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thatco
ectio
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itetra
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t
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2
ftemperatureasteelisheatedtoi
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lybytheactualgrai
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egrai
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t
4、Decompositio
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ite
Theauste
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isesse
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toalmostpureferritea
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titeAttheequilibriumtemperaturether