Sintering behavior, microstructure and mechanical properties of a Ti–16Nb alloy processed by metal
injection molding (MIM) technology using elemental powders were investigated in this work by optical
microscopy, X-ray diffraction (XRD), dilatometer, scanning electron microscopy (SEM) and energydispersive
spectroscopy (EDS). It was found that from 700 C to 1500 C the homogenization and
densification process of MIM Ti–16Nb alloy consisted of three steps, i.e., Ti-diffusion-controlled step,
Ti–Nb-diffusion step and matrix-diffusion step. Titanium carbide formation was observed in the samples
sintered at 1300 C and 1500 C, but not in the ones sintered at 900 C and 1100 C. The MIM Ti–16Nb
specimens sintered at 1500 C exhibited a good combination of high tensile strength and low Young’s
modulus. However, the titanium carbide particles led to poor ductility.
2015 Elsevier
Sintering behavior, microstructure and mechanical properties of a Ti–16Nb alloy processed by metalinjection molding (MIM) technology using elemental powders were investigated in this work by opticalmicroscopy, X-ray diffraction (XRD), dilatometer, scanning electron microscopy (SEM) and energydispersivespectroscopy (EDS). It was found that from 700 C to 1500 C the homogenization anddensification process of MIM Ti–16Nb alloy consisted of three steps, i.e., Ti-diffusion-controlled step,Ti–Nb-diffusion step and matrix-diffusion step. Titanium carbide formation was observed in the samplessintered at 1300 C and 1500 C, but not in the ones sintered at 900 C and 1100 C. The MIM Ti–16Nbspecimens sintered at 1500 C exhibited a good combination of high tensile strength and low Young’smodulus. However, the titanium carbide particles led to poor ductility. 2015 Elsevier
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