Effect of the processing conditions on density, strength and microstructure of Ti-12Mo alloy fabricated by PIM process

摘要

To examine the applicability of the powder injection molding (PIM) process to the Ti alloy system, a basic study was performed using premixed powder. A Ti-l2Mo alloy, in which theβ phase is stable, was selected as test material because of itshigh corrosion resistance and strength.It was shown that the relative densities of the PIM compacts were more than 2% higher than those of the PM (traditional powder metallurgy) compacts, beside the PIM compacts showed higher strengths than the PM compacts compared under the same sinteringconditions. The compacts showed the maximum strength at 94% in theoretical density, in both the PIM and PM process. It was also shown that the TiC precipitates strengthened the PIM compacts when they were fine and uniformly precipitated.The PIM process showed to be successfully applicable to premixed Ti-l2Mo powder