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- W2893866334 abstract "This paper expounds the effects of diffusion annealing and age hardening heat treatments on the phase morphology and mechanical properties of Al7075–eutectoid steel powder (0.8 wt% carbon steel) reinforced composites. Eutectoid steel powder ranging from 55–70 μmis selected due to its ability to improve the bulk hardness of the composite. In the present study three different weight fractions ofeutectoid steel powder composites are prepared by conventional stir casting process. The material iscast in the form of rods inside the permanent stainless steel mould from where some samples are cooled in still air to room temperature. From these samples some are diffusion annealed from isothermal holding of 6 h i.e., above recrystallization temperature (600 °C) followed by boiling water quench and few are subjected to age hardening for a fixed time duration of five hours. Age hardening iscarried out at solutionising temperature 560 °Ctailed by aging at two temperatures 100 °Cand 180 °Cindependently. All the samples in each category are subjected to critical property characterization andthe phase arrangement information are characterized by scanning electron microscopy. From the analysis of microstructure and destructive tests, it is clear that the as-cast (stir-cast) samples display dendritic segregations with wider grain boundary area, is responsible for the inferior mechanical properties. It is also found out that diffusion annealing and age hardening heat treatments eliminates micro-segregation and improve mechanical properties of Al7075–eutectoid steel powder reinforcedcomposites. It is concluded that chemical inhomogeneity in dendrites can be eliminated by selecting the suitable heat treatment with proper heat treatment parameters." @default.
- W2893866334 created "2018-10-05" @default.
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- W2893866334 date "2018-10-09" @default.
- W2893866334 modified "2023-09-23" @default.
- W2893866334 title "Interactive study on phase morphology and mechanical characteristics of diffusion annealed and age hardened Al7075–steel powder reinforced metal matrix composites" @default.
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- W2893866334 doi "https://doi.org/10.1088/2053-1591/aae3ae" @default.
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