One of the most popular forming processes is the shape rolling process in which the desired shape change is achieved by pressing two rollers with a special shape in the opposite rotational direction. In order to improve the product’s quality and reduce production costs, accurate analysis of the shape rolling process of the compressor blades as well as the investigation of the effective paramete...

In the present study, the presence of brass mesh on the bond strength of aluminum (AA1050) strips in the cold roll bonding process was investigated. The influence of various process parameters including reduction in thickness, pre-rolling annealing, initial thickness of the strips, and post-rolling annealing was also considered. After cold roll bonding process, peeling test was carried out and ...

Abstract Central cracking refers to the formation of internal cavities in cross wedge rolling (CWR) products. It occurs various materials such as aluminium/titanium alloys, steels and plasticine at room or elevated temperatures, driven by different central mechanisms. However, these mechanisms are still elusive, a unified predictive model is absent due complex stress states within workpiece, in...

Spontaneous stratification of granular mixtures has been reported by Makse et al. @Nature ~London! 386, 379 ~1997!# when a mixture of grains differing in size and shape is poured in a quasi-two-dimensional heap. We study this phenomenon using two different approaches. First, we introduce a cellular automaton model that illustrates clearly the physical mechanism; the model displays stratificatio...