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部分奥氏体化CCT曲线与完全奥氏体化CCT曲线形状相似,但前者相对于后者普遍上移和左移,且上移比较明显。
The CCT curves of part austenitic and complete austenitic show the similar shape, but the former shifts upward and left compared with the latter, and the upward is more obvious.
浇注温度提高,枝晶臂的长大速度增大,上述物理冶金作用能够部分细化球化奥氏体,但其圆整度较差,尺寸较大。
With the increasing of casting temperature, the dendrites grew fast, which could spheroidize and fine partial austenite with worse circularity and bigger size.
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