用电子探针研究了含Zr低合金高强度钢中夹杂物的形貌、大小及分布等特性.结果表明,钢样中的夹杂物为圆形,呈分散分布,其组成系含ZrO2的复合夹杂物,而且MnS依附此复合夹杂物成核和长大.钢中添加少量Zr可明显改善夹杂物形态和分布,从而改善钢的强度和韧性.
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