论文信息 - The Preparation of Ti-6Al-4V Alloy Rod and Blade by Metal Mold Suction Casting and the Effects of Hydrogen on Them

The Preparation of Ti-6Al-4V Alloy Rod and Blade by Metal Mold Suction Casting and the Effects of Hydrogen on Them

In the article this is a new way to prepare Ti-6Al-4V alloy rod and blade by metal mold vacuum suction casting. The effects of hydrogen on the suction casting is also studied. It is found that the alloy melt can be sucked up easily by the mold and has a better fluidity because of H2. Hydrogen can make the electrical current for suction casting decrease sharply compared with the electrical current in Ar. Hydrogen can refine the grain size of the alloy rod and blade. Compared with the unhydrogenated specimen, the peak stress of the hydrogenated specimens increase about 20%, because hydrogen decreases the volume fraction and size of shrinkage porosity.

[1] Huseyin Cimenoglu,et al. Oxidation of Ti-6Al-4V alloy , 2009 .

[2] Miaoquan Li,et al. High temperature deformation behavior of a near alpha Ti600 titanium alloy , 2008 .

[3] Jiann-Kuo Wu,et al. Formation of nanocrystalline structure of Ti-6Al-4V alloy by cyclic hydrogenation-dehydrogenation treatment , 2008 .

[4] E. Hamzah,et al. Effect of heat treatment on the diffusion coefficient of hydrogen absorption in gamma-titanium aluminide , 2007 .

[5] M. Jahazi,et al. Flow stress prediction during hot working of near-α titanium alloys , 2007 .

[6] F. Froes,et al. Hydrogen as a temporary alloying element in titanium alloys: thermohydrogen processing , 2004 .

[7] Jiann-Kuo Wu,et al. Effects of electrolytic hydrogenating parameters on structure and composition of surface hydrides of CP-Ti and Ti–6Al–4V alloy , 2002 .

[8] A. Genç,et al. Phase transformations in Ti-6Al-4V-xH alloys , 2001 .

[9] Hongbiao Dong,et al. Enhanced wear resistance of titanium surfaces by a new thermal oxidation treatment , 2000 .

[10] V. Goltsov. Hydrogen treatment (processing) of materials: current status and prospects , 1999 .

[11] Y. V. R. K. Prasad,et al. Processing map for the hot working of near-α titanium alloy 685 , 1997 .

[12] V. Kutumbarao,et al. Superplastic behaviour of a titanium alloy IMI685 under uniaxial compression , 1996 .