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This work study the effect of laser surface heat treatment on physical properties (green density, density after sintering, theoretical density and porosity)of a composite material of an Al powder as a matrix with different percentage of B 4 C powder as additive material. This work was done by two stages: First stage: Production the maincomposite material which is contain Al powder with grain size 24μm as a matrix and B 4 C powder with grain size 50μm as additive with different weight percentagefatcat:nef562vpjfhvratnnzcspo7tgu