合金材料的特征和优点把材料加以复合,有效地利用各自性能的想法,作为人类的智慧从古代就实现了。诸如日木刀等内部含硬芯,外部有韧性之类的器物从古代以来就已被人们所利用了。而近代人们把沙子、砾石、水泥、钢筋骨架等组合在一起制成钢筋混凝土,也是很好的例 Characteristics and Advantages of Alloy Materials The idea of ​​combining materials to effectively utilize their own properties has been realized as ancient human wisdom as human beings. Utensils such as Japanese knives with hard cores inside and toughness outside have been used by people since ancient times. The modern people sand, gravel, cement, steel skeleton, etc. made of reinforced concrete, is also a good example