The SM master alloy was used to add high oxygen affinity elements Mn and si into the sinteredsteel as alloying elements to improve the mechanical properties.
通过添加硅锰母合金，将硅、锰这两种对氧亲和力较高的元素加入到烧结钢中，以改善烧结钢的力学性能。
2
But the addition of SM master alloy has some deleterious effect on the toughness of sinteredsteel.