【摘要】 低碳球铁是含碳量远低于常规含碳量的球墨铸铁,其突出特点是成本低,性价比高,现已发展成有不同特点的四个品种:铸态高韧塑性铁素体低碳球铁,铸态高强度珠光体低碳球铁,准铸态贝氏体低碳耐磨球铁,铸态耐热、耐蚀奥氏体低碳球铁.低碳球铁开辟了用反球化元素来进行球化的先河,使人们对球化机理有了全新的认识,球化元素与反球化元素没有本质的区别,均为表面活性元素.更多还原

【Abstract】 As a new type of engineering material,the lowcarbon ductile iron with low cost and high performance has been developed into four grades,namely the as-cast high-toughness ferritic low-carbon ductile iron,as-cast high-strength pearlitic low-carbon ductile iron,quasi-cast wear-resistant bainitic low-carbon ductile iron,and as-cast heat-and corrosion-resistant austenitic low-carbon ductile iron.The low-carbon ductile iron was for the first time fabricated using anti-spheroidizing elements to spheroidize a cast iron.It was thus realized that no striking difference existed between the spheroidizing elements and the anti-spheroidizing ones,all of them being surface activating elements.更多还原