多道次冷轧法制备内生复合钢板

Deformation Induced In Situ Composite Plate Manufactured by Cold Rolling with Multiple Pass

通过将淬火后的１５ＣｒＭｎＭｏＶ 钢进行多道次冷轧的方法制备了金属内生复合板，透射电镜（ＴＥＭ）及Ｘ 射线（Ｘｒａｙ） 衍射研究发现：复合板显微组织呈现明显的层片状特征，试样的屈服强度σ０．２ 为１ ５００ ～１ ８００ＭＰａ，断裂韧性ＫＩＣ为８５ ～１１０ ＭＰａ ｍ１／２ ，ＫＩＳＣＣ为７５ ～９８ ＭＰａ ｍ１／２ 。

The in situ composite plate was manufactured by cold rolling with multiple pass of quenched steel 15CrMnMoV. The observation results with transmission electron microscope and x ray diffraction revealed that the structure of composite plate presented laminar feature, the yield strength σ 0.2 was 1 500～1 800 MPa, the fracture toughness K IC 85- 110 MPa m 1/2 and K ISCC 75-98 MPa m 1 / 2.