Numerical simulation of a thixocasting process for AISI420 stainless steel air-turbine blade

Corrosion of Cast Aluminum Alloys: A Review

“…The corrosion resistance is reduced as a result of the loss of the connectivity between the Si particles, which in turn allows easier access of the corroding medium to the Al phase, as is presented in Figure 14. Leon et al [76] address a comparative study of the corrosion behavior and corrosion fatigue resistance of AlSi10Mg alloy produced by selective laser melting (SLM) and its conventional counterpart, gravity cast alloy, using a 3.5% NaCl solution, checking with immersion test during 45 days and a standard bending machine respectively, observing that the corrosion resistance of the two alloys is relatively similar, with a minor advantage to the printed alloy; meanwhile, AM alloy presents a moderately higher fatigue corrosion related to cast alloy, due to the significant differences between the microstructure and defect characteristics of those two alloys, mainly porosity distribution and the relatively intensive formation of enriched Fe and Mn precipitates with a detrimental microgalvanic effect in cast alloys [33].…”

“…A deep comparative study has been done by Zhu et al [31] showing the high performance of SSM from financial, technological, and future perspectives issues, with practical application of turbocharger compressor wheels as examples of complex geometric components. There are numerous metallic systems prone to being manufactured by SSM process, such as magnesium alloys [32] and stainless steels [33].…”

Numerical Simulation on Thixocasting Process of Auto Box-Like

“…Thixotropic materials have very complex thermo-mechanical behaviour because they are temperature dependent [6][7][8]. Depending on the thermo-mechanical loading condition, the deformation of the liquid and solid phases can be either homogenous or heterogeneous.…”

Impact of Process Parameters on the Auto Claw-Pole Thixoforming Process

“…Besides, the load required to deform material is much lower than in the case of conventional hot forging due to smaller resistance and good material fluidity. At present, although thixoforming of low melting point alloys as aluminum or magnesium alloys is now an industrial reality, thixoforming of high melting point alloys as steel is still at the research level [1][2][3][4][5][6][7]. In the steel thixoforming process, many problems need to be solved, such as heating problem, tool problem, forming load, die filling process etc [1][2][3][4]7].…”

“…Whereas, with very high punch speed, although forming load is quite small and billet temperature distribution is quite homogeneous, the increase of metal flowing speed will induce turbulence flow, which lead to air-entrapment and shrinkage porosity defect. Thus, reduces product quality [4,6]. The curves of forming load -initial billet temperature are shown in Fig.…”