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Credibility ,The solid solution temperature is mainly determined by the chemical composition. Generally speaking, the types of alloying elements, the content of high grade, solid solution temperature should be increased accordingly. In particular, manganese, molybdenum, nickel, silicon content of high steel, only to increase the solid solution temperature, so that it fully dissolved in order to achieve the softening effect. But stabilized steel, such as 1Cr18Ni9Ti, the solid solution temperature is high, the carbide of the stable chemical elements fully dissolved in the austenite, in the subsequent cooling will be in the form of Cr23C6 in the grain boundary precipitation, resulting in intergranular corrosion. In order to make the stable element of carbide (TiC and NbC) does not decompose, does not dissolve, generally uses the lower solid solution temperature.
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