The flexural strength reaches 1?980 MPa,the impact energy is up to 18 J/cm~2 and the hardness achieves 50.In view of the feature of the fracture surface,the matrix shows obviously dimple feature while the fracture mode of high alloyed layer is brittle.

• 双层烧结铁基材料综合了高合金层和基体层的优点,抗弯强度达1 980 MPa,冲击韧性达18 J/cm2,洛氏硬度为50。