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一般钢件脱碳的金相鉴别,是以肥粒铁体或波来体数量的多少来区别的。但这仅适用于亚共析钢,因为亚共析钢如有碳份的减少,波来体的数量亦即减少,故可从显微组织中观察到脱碳的现象。而过共析钢的组织是波来体与渗碳体,如有碳份的减少,从显微组织中将观察不到肥粒铁体数量的增加(仅指碳份减少不太大的情况),所以也就觉察不到已否脱碳。一些合金工具钢、高碳合金钢、高合金钢,在退火状态是不能鉴别脱碳的,脱碳现象必须经过特殊热处理才能显现出来;例如“沙道夫斯墓法”是一种显现高速钢脱碳的有效方法。但这一方法仅适用于在中温或中温以上温度时奥斯田体
General steel decarburization metallographic identification, based on the amount of ferrite or wave body number to distinguish. However, this only applies to hypo-eutectoid steels, since the amount of wave bodies decreases as the amount of carbon in the hypo-eutectoid steel decreases, decarbonization can be observed from the microstructure. The organization of eutectoid steel is wave body and cementite, if the reduction of carbon, from the microstructure will not see the increase in the number of ferrite (only refers to the case of carbon reduction is not too large ), So I can not detect whether decarbonization. Some alloy tool steels, high carbon alloy steels, high alloy steels, can not be identified in the annealed state decarburization, decarburization phenomenon must be a special heat treatment can be revealed; for example, “Shadoufi tomb method” is a manifestation of high-speed steel off Effective method of carbon. However, this method is only applicable to the Austrian field when the temperature is above or above middle temperature