引言锰是高强度低合金钢中必不可少的成分。在这类钢中,它的主要作用是强化铁素体。锰也可以细化晶界碳化物从而改善常温和低温(零下)韧性。锰的最有利的作用是提高淬透性而与碳量无关。这一作用使钢,尤其是使热处理后的合金铸铁,在整个断面范 Introduction Manganese is an indispensable ingredient in high strength, low alloy steels. In this type of steel, its main role is to strengthen the ferrite. Manganese can also refine grain boundary carbides to improve room temperature and low temperature (minus) toughness. The most beneficial effect of manganese is to increase the hardenability regardless of the amount of carbon. This role makes the steel, especially after heat treatment, the alloy cast iron, the entire section of the van