Die soldering: Mechanism of the interface reaction between molten aluminum alloy and tool steel

摘要: Die soldering is the result when molten aluminum sticks to surface of die material and remains there after ejection part; it results in considerable economic production losses casting industry, a major quality detractor. In order alleviate or mitigate soldering, one must have thorough understanding mechanism by which material. A key question whether reaction diffusion controlled interface controlled. set couple experiments between alloy ferrous was carried out. The showed that diffusional process. When comes contact with material, iron atoms diffuse into each other resulting formation series intermetallic phases over Initially react form binary iron-aluminum phases. Subsequently, these further ternary iron-aluminum-silicon Iron great affinity for root cause high kinetics, exists aluminum. Once initial phase layers are formed due abnormally low thermal conductivity phases, favorable energies experimental details, reactions, analysis leading establishment giving rise reviewed discussed.