采用力学性能试验、TEM及SEM研究了15CrMnMoV钢板中的内生复合效应.结果表明:将15CrMnMoV钢板冷轧而制备的内生复合钢板,其σ02在1500～1660MPa之间,KIc在98.6～110.7MPa·m1/2之间,KISCC在75～95MPa·m1/2之间,表现出了超高强韧性;内生复合效应的本质在于塑性变形使得15CrMnMoV钢板成为(100)织构取向带镶嵌于(111)织构取向带中的复合结构,弱界面为(100)/(100)晶间界面,裂纹扩展过程中弱界面的分层现象使得其断裂韧度大幅度提高.
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