Tensile Properties and Fracture Characteristics of B_4C/Al Neutron Absorber Materials
By the tensile test of B4C/Al neutron absorbing material at room temperature to 350 ℃,the main influence factors of tensile fracture were analyzed.The effects of B4C particle size on the tensile fracture were described in detail.The results show that temperatures have significant effects on the tensile properties of B4C/Al,and the neutron absorbing material is low plasticity,but the tensile property is superior compared with similar foreign materials.The compatible deformation between the large grained B4C and Al matrix is poor,the tensile stress on B4C and matrix aluminum interface is easy to generate shear stress,which can lead to B4C and Al matrix separation.The crack in B4C/Al tensile process first appears at the interface of large particle B4C and Al matrix.