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首页> 外文期刊>Journal of Iron and Steel Research International >Spheroidization and Ostwald Growth of Carbide in Isothermal Process of Hot-Deformed High Carbon Chromium Cast Steel
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Spheroidization and Ostwald Growth of Carbide in Isothermal Process of Hot-Deformed High Carbon Chromium Cast Steel

机译：热变形高碳铬铸钢等温过程中碳化物的球化和Ostwald生长

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摘要

In isothermal spheroidizing process, the spheroidizalion and growth of the carbide formed in hot-deformed high-carbon chromium cast steel at high temperature were investigated. The results showed that the spheroidizing growth of carbide proceeds in such a way that the bigger carbide particles swallow the smaller ones, and the short rhabdoid carbides dissolve and are spheroidized by itself. When the samples were held at 720 ℃ for more than 3 h, the spheroidization is not obvious. The feature of the process is the size increment and the amount decrement of carbide particles. The empirical equation for growth rate of carbides was obtained. The volume fraction of carbides keeps constant. The growth process agrees well with Ostwald Ripening Law.
机译：在等温球化过程中，研究了热变形高碳铬铸钢在高温下形成的碳化物的球形化和生长。结果表明，碳化物的球化生长以较大的碳化物颗粒吞入较小的碳化物，短的横纹碳化物​​自身溶解和球形化的方式进行。当样品在720℃下保温3 h以上时，球化作用不明显。该工艺的特点是碳化物颗粒的尺寸增加和数量减少。得到了碳化物生长速率的经验方程。碳化物的体积分数保持恒定。生长过程与奥斯特瓦尔德成熟法非常吻合。

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