Abstract
The research involved in this thesis was conducted to develop a procedure for producing cylindrical specimens of NiTi shape memory alloy for mechanical testing from elemental powders by hot isostatic pressing. Powders were mixed to ratios of 50.0 and 50.6at.% Ni, packed and sealed into stainless steel containers, hot isostatically pressed (HIPed) at 20OMPa and 900-1050 'C, and machined to expose a gauge section of consolidated NiTi material for thennomechanical testing. Some samples of material were used for DSC analysis to determine transfor-nation temperatures as well as for microscopic examination. Effects of post-consolidation heat treatments on the material microstructure and transformation behavior were measured. Specimens of approximately 99% theoretical density and nearly homogeneous NiTi microstructures were produced. The specimen were mechanically tested in tension and compression and were shown to exhibit shape memory properties.
McNeese, Matthew Doyle (1997). Fabrication of NiTi shape memory alloy from elemental powders by hot isostatic pressing. Master's thesis, Texas A&M University. Available electronically from
https : / /hdl .handle .net /1969 .1 /ETD -TAMU -1997 -THESIS -M333.