高硼铁基合金是一种以硼化物为耐磨相的新型耐磨材料。在铸态条件下，其组织由基体和硼化物组成。基体随着添加元素的种类和数量不同而有所不同，硼化物在组织中呈连续网状分布。高硼铁基合金熔体在金属模和砂模不同凝固条件时，奥氏体初晶晶粒随冷却速度增加而减小，硼化物形态发生较大变化；热处理后，砂模铸造的试样，硼化物形态变化不大，而金属模铸造的试样硼化物粒化，其冲击韧度提高了60％。
High boron iron-base alloy is a new kind of wear-resistant material, which takes borides as wear-resistant phases. In structure, matrixes and borides were included in as-cast condition and the matrixes were changed with different alloying elements and quantity. Borides were distributed in the shape of continuous net in the structure of high boron iron-base alloy. When the melt was solidified in metal mould and sand mould respectively, the grain size of austenitic primary crystal decreases with the cooling rate increase. In addition, the morphology of borides was changed greatly. After heat treatment, borides of samples made of sand mould were changed little, otherwise, borides of samples made of metal mould were changed to granulation shape and the impact toughness was increased by 60%..
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