Effect of whisker orientation on the stress corrosion cracking behavior of alumina borate whisker reinforced pure Al composite

摘要

Stress corrosion cracking (SCC) behavior of as-extruded alumina borate whisker (Al_(18)B_4O_(33))w reinforced pure aluminum composite in 3.5%NaCl solution was investigated using double cantilever beam (DCB) method. The effect of whisker orientation on the stress corrosion cracking behavior of the composite after extrusion was examined. The results indicated that the crack propagated easily along the interface between whisker and matrix in the composite. The whisker orientation plays an important role in stress corrosion cracking of the composite after extrusion.