By using pre-alloyed powders and mixed elementary powders with composition ratio of Al Si11 as raw material and Ti H2( titanium hydride) as blowing agent,series of aluminum foam samples were successfully fabricated with methods of cold isostatic pressing,hot vacuum deaeration,hot extrusion and heating foaming molding. The evolution of porosity,pore size and its distribution,pore morphology parameters were studied,and the metallographic of microstructure of hole wall was characterized. The results showed tha...