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在奥氏体球墨铸铁中以锰代镍,业已采用不同的镍锰含量进行了系统研究。文中述及的金相热分行与X射线分析证实了各不同相的倾向和顺序。详细分析了随锰量增加时碳化物的凝固特点、性质和组织结构,确定了不同碳化物出现的顺序。发现了加锰同时减镍时,奥氏体基体中碳化物增加。试验表明,锰作为一种合金化元素,在试图少加镍时,可能影响奥氏体球铁的铸造、机械和腐蚀性能。
In austenitic ductile iron manganese nickel, have been used in different nickel-manganese content of a systematic study. The metallographic thermal branch and X-ray analysis described herein confirm the tendency and order of the various phases. The solidification characteristics, properties and microstructure of carbides are analyzed in detail with the increase of manganese content, and the order of occurrence of different carbides is determined. It was found that while adding manganese reduces nickel, carbides in the austenite matrix increase. Experiments have shown that manganese, as an alloying element, may affect the casting, mechanical and corrosive properties of austenitic ductile iron when attempting to add less nickel.