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Abstract：
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The influence of process parameters on the forming quality of magnesium matrix composites by extrusion directly following vacuum infiltration was studied,and the selection method of process parameters was put forward.The main characteristics and causes of typical defects were analyzed,and the prevention and control measures were proposed,which means that higher pouring temperature and preheating temperature of mould can contribute to perfecting the infiltration of magnesium liquid in the preformed body.It is the key measure that extrusion temperature should be strickly controlled to prevent the occurrence of surface cracks.Improving the surface quality and lubrication state of mould can reduce the probability of surface cracking and workpiece bending.
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Funds：
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国家自然科学基资助项目(50575185)
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AuthorIntro：
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Reference：
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