4.5.1 合金元素对钢平衡组织与力学性能的影响 ( The effect of alloying elements on the equilibrium microstructure and mechanical properties of steel ) 4.5.2 合金元素对钢热处理与力学性能的影响( The effect of alloying elements on the heat treatment and mechanical properties of steel ) 4.5.3 钢中微合金元素的作用（Action of microalloying elements in steels） “金属材料热处理”课堂讨论提纲（A classroom discussing outline about “heat treatment of metal materials”）
