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- W2022791787 abstract "Six Al–Mg–Si composites reinforced with 15 vol.% of MoSi2 intermetallic particles, together with three unreinforced monolith Al–Mg–Si (AA6061) alloys have been processed by powder metallurgy to quantify the roles of alloy matrix grain size and reinforcement particle on their solutionized hardness and ageing response. In the range studied, hardness of solutionized composites follows a Hall–Petch mechanism. Moreover, it can be rationalised as the sum of the hardness of the alloy matrix with the same matrix grain size (d) and a term HR, that accounts for 17–27% of total hardness, is roughly constant and independent of reinforcing size and distribution. Matrix grain size is responsible for 50–65% of hardness, whereas the contributions of solid solution and Orowan strengthenings account for 17–26%. Upon heat treatment at 170 °C, hardening ability decreases linearly with d−1/2, fitting all data points to a single equation independently of whether they correspond to the composites or to the monolith alloys." @default.
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- W2022791787 date "2009-09-01" @default.
- W2022791787 modified "2023-09-23" @default.
- W2022791787 title "On the role of matrix grain size and particulate reinforcement on the hardness of powder metallurgy Al–Mg–Si/MoSi2 composites" @default.
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- W2022791787 doi "https://doi.org/10.1016/j.compscitech.2009.03.017" @default.
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