Optimization of Parameters for Pressureless Sintering of Titanium and Ti-6Al-4V Powders by a Taguchi Method
This work describes the effects of various parameters on the pressureless sintering of Ti and Ti-6Al-4V E.lloy powders. Specific sintering trials were carried out based on a Taguchi method using four parameters (particle size,compaction pressure,sintering temperature and holding time). Each parameter was studied at three different levels. The effect of sintering parameters on densification is discussed for three different materials (Ti200mesh,Ti-6Al-4V-200mesh and Ti-6Al-4V-100mesh). Confirmation experiments were carried out to validate the optimum parameters obtained from the original design experiments. Phase constituents and microstructure were characterized using X-ray diffraction (XRD) and environmental scanning electron microscopy (ESEM). Optimum sintering parameters for achieving the highes: density were 1250℃ and 8 hours of holding time for Ti powder,and 1400℃ and 6 hours for Ti-6Al-4V powder. Validation trials confirmed the optimized parameters with Ti-6Al-4V-200mesh samples having density close to 95％. The additional analysis showed differences between the surface and centre of the samples,in terms of different phases, morphology and porosity.
Titanium Ti-6Al-4 V taguchi method sintering parameters
Changzhou Yu Peng Cao Mark I Jones
Department of Chemical and Materials Engineering University of Auckland,Auckland 1010,New Zealand
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
1719-1721
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）