Metals with an hexagonal close packing (hpc) lattice are usually characterized by anisotropic mechanical properties, as a consequence of the texture, the deformation mechanism and the critical shear stress. The aim of this paper was to investigate the directional dependency of tensile properties of an hcp alloy, as zamak 5, processed by die-casting. A set of 1.7mm thick plates was produced with the same process parameters (alloy, die temperature and plunger speed). Tensile tests specimens were water cut from the plates in three different directions, that is parallel, at an angle of 45° and orthogonal to the gate, in order to evaluate the influence of the flow filling direction on the casting performance. The tensile experiments showed an appreciable variation only in the Young modulus.
Evaluation of anisotropic mechanical properties of die-cast zamak5
POLA, Annalisa;ROBERTI, Roberto;
2012-01-01
Abstract
Metals with an hexagonal close packing (hpc) lattice are usually characterized by anisotropic mechanical properties, as a consequence of the texture, the deformation mechanism and the critical shear stress. The aim of this paper was to investigate the directional dependency of tensile properties of an hcp alloy, as zamak 5, processed by die-casting. A set of 1.7mm thick plates was produced with the same process parameters (alloy, die temperature and plunger speed). Tensile tests specimens were water cut from the plates in three different directions, that is parallel, at an angle of 45° and orthogonal to the gate, in order to evaluate the influence of the flow filling direction on the casting performance. The tensile experiments showed an appreciable variation only in the Young modulus.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.