Comparative Study the Effect of Different Raw Powder on Foaming Process during Sandwich Rolling

An element powder-Al plate sandwich rolling processing is proposed for preparation of aluminum alloy foam sandwich with a metallurgy bonding interface. By comparing the deformation characteristic and it’s effect on foaming processing by using Al, Si elements and AlSi alloy powder, and to explore the effect of different powder as raw material on preparing foam aluminum sandwich. It was found that the densification of precursor using element powder is higher than using alloy powder, and rolling deformation resistance is smaller. And it was more suitable to manufacture different types of foam core material by using element powder as raw material.

Effect of AISI316 Stainless Steel Geometry on Temperature Distribution during Hot Rolling at High Reduction

The effects of material geometry on some rolling parameters have been studied. In a recent work, geometrical variation was introduced into the Reverse Sandwich Rolling Model (RSM) for AISI316 Stainless Steel (HCSS316) to study the effect of ingot geometry on temperature distribution during hot rolling. Validation of the model was however limited to hot rolling simulation at low reductions. In this work, the RSM, simulated in FORTRAN, is validated with hot rolling experimental data for higher reductions. Results obtained revealed a similar pattern of symmetrical temperature distribution from the rolling surfaces, to the midthickness of the material as earlier observed at low reductions.