|About this Abstract
||Materials Science & Technology 2019
||Powder Metallurgy of Light, Reactive and Other Non-ferrous Metals
||Deformation behavior and Microstructural Evolution of Hydrogen-Sintered Ti-6Al-4V during hot compression tests
||Austin E. Mann, Pei Sun, Omar Kergaye, Wyatt McNeill, Ali Yousefiani, Z. Zak Fang
|On-Site Speaker (Planned)
An analysis pertaining to deformation behavior and microstructural evolution was conducted on powder metallurgy (PM) Ti-6Al-4V made from Hydrogen-Sintering and Phase Transformation (HSPT).The initial microstructure produced by HSPT was a ultra-fine lamellar structure. PM Ti64 specimens with a coarse lamellar microstructure were made by conventional vacuum-sintering, and tested for comparison. Performance of these materials was assessed by simulating representative titanium breakdown and conversion conditions through elevated temperature compression testing on a GleebleŽ 3500 Hydrawedge IIŽ system. Compression tests were performed on cylindrical specimens at sub and near-transus temperatures (850, 900, 950, and 1000˚C) and at moderate strain rates of 0.01 and 0.10 s-1. The results show that the microstructure produced by HSPT retained a fine, equiaxed structure upon deformation, and it exhibited similar flow behavior compared to the coarse lamellar structure.
||Definite: At-meeting proceedings