CrMoV钢板条马氏体塑性变形诱发内生复合效应的研究  

Study on the In-situ Composite Effect Induced by Plastic Deformation of Lath Martensite in CrMoV Steel

作　　者：蔡大勇[1] 张春玲[1] 高聿为[1] 胡怡[1] 荆天辅[1] 

机构地区：[1]燕山大学材料科学与工程学院,河北秦皇岛066004

出　　处：《材料热处理学报》2001年第4期43-47,共5页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金资助 (59681 0 0 6) ;河北省自然科学基金资助 (5951 65)

摘　　要：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σ0 2 在 15 0 0～ 16 6 0MPa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 (10 0 )织构取向带镶嵌于 (111)织构取向带中的复合结构 ,弱界面为 (10 0 ) (10 0 )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。The in situ composite effect induced by plastic deformation in CrMoV steel plate was studied by mechanical properties testing,TEM and SEM. The results show that the tensile strength of the DISC manufactured from CrMoV steel plate by multiple cold rolling is between 1500～1660MPa,and K IC 、 K ISCC reach 85～110 MPa·m 1/2 and 75～98MPa·m 1/2 respectively. The composite structure of CrMoV steel plate after plastic deformation is layer structure formed by (100)texture inlaid in (111)texture matrix. The weak interface is between (100)/(100).The fracture toughness of DISC is greatly increased due to the delimitation of weak interface in front of the crack.

关 键 词：15CrMnMoV钢板 塑性变形 内生复合效应 断裂韧度 层状复合材料 

分 类 号：TB331[一般工业技术—材料科学与工程]