Author: Kothari Kunal Radhakrishnan Ramachandran Wereley Norman M. Sudarshan Tirumalai S.
Publisher: Taylor & Francis Ltd
ISSN: 1042-6914
Source: Materials and Manufacturing Processes, Vol.28, Iss.11, 2013-11, pp. : 1171-1178
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
Commercially available micron-sized gamma titanium aluminide powders with Ti-50%Al and Ti-48%Al-2%Cr-2%Nb (at%) composition were milled in an attrition mill for 5 hours and 8 hours, respectively, with 2 wt% stearic acid. Milling resulted in a decrease of the average powder particle size by 60%, which implies submicrometer range powders, with no change in the powder composition. The milled powders were consolidated to produce a near-gamma microstructure and fully lamellar microstructure for Ti-50%Al and Ti-48%Al-2%Cr-2%Nb composition samples, respectively. A significant decrease in grain size was realized for the samples consolidated from the milled powders as compared to samples consolidated from as-received powders. The decrease in grain size improved flexure strength and elongation.
Related content
Warm compaction of attrition milled nanostructured iron powders
By Rawers J.C.
Nanostructured Materials, Vol. 11, Iss. 8, 1999-11 ,pp. :
By Wang Y. Lin T. L. Lin D. Law C.C.
Journal of Materials Science, Vol. 35, Iss. 12, 2000-06 ,pp. :