Shear band formation in shaped rheocast aluminium component at various plunger velocities
作者： M. BLADH , M. WESSÉN , A.K. DAHLE
DOI: 10.1016/S1003-6326(09)60369-1
关键词:
摘要: Significant progress has been made in recent years understanding and modelling the rheology of semi-solid metals. These models show effects microstructure terms size morphology globules on material response. More recently it shown that metals can behave as compacted granular materials such sand. A particular signature deformation is becomes concentrated into shear bands which are 10-20 grains wide. Such have also observed a range cast products. Recently, clearly high pressure die (HPDC) products results Reynolds dilatancy. Shear known to be common feature metal The segregation banding (SSM) its dependence plunger velocity were investigated. Shaped castings with RHEOMETAL™ process different velocities. microstructural characteristics investigated, emphasis bands. It ingate velocities influence location
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