Effects of process control agent on the microstructure and mechanical properties of Ti-Sn-Nb alloy prepared by mechanical alloying
Nouri, Alireza, Li, Yuncang, Yamada, Yasuo, Hodgson, Peter D. and Wen, Cui'e 2008, Effects of process control agent on the microstructure and mechanical properties of Ti-Sn-Nb alloy prepared by mechanical alloying, in PM 2008 : Advances in powder metallurgy & particulate materials : Proceedings of the 2008 World Congress on Powder Metallurgy & Particulate Materials, Metal Powder Industries Federation, Princeton, N.J., pp. 222-233.
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Title
Effects of process control agent on the microstructure and mechanical properties of Ti-Sn-Nb alloy prepared by mechanical alloying
PM 2008 : Advances in powder metallurgy & particulate materials : Proceedings of the 2008 World Congress on Powder Metallurgy & Particulate Materials
Editor(s)
Lawcock, Roger Lawley, Alan McGeehan, Partick J.
Publication date
2008
Conference series
Powder Metallurgy and Particulate Materials World Congress
Start page
222
End page
233
Publisher
Metal Powder Industries Federation
Place of publication
Princeton, N.J.
Summary
In the present study, the influence of process control agent (PCA) on the characteristics of powder and bulk sintered Ti-16Sn-4Nb (wt. %) alloy prepared by mechanical alloying has been investigated. The elemental Ti, Sn and Nb powders were mechanically alloyed in a planetary ball mill for a short period of time using two types of PCA, namely stearic acid (SA) and ethylene bis-stearamide (EBS). The powder morphology, microstructural evolution of the bulk sintered alloy, phase formation and hardness of the alloy have been studied as a function of PCA. Results indicated that the addition of PCA leads to a delay in aIloy formation and introduces contaminations (mainly carbon and oxygen) into the material. The microstructural observation of the bulk alloy revealed a homogeneous distribution of fine Nb-rich colonies (ß-phase) within the a-Ti matrix for small amount of PCA. The hardness values of samples exhibited a significant increase with increasing amount of PCA, reaching a value of ~ 600 BV.
ISBN
9780979348891 0979348897
Language
eng
Field of Research
091499 Resources Engineering and Extractive Metallurgy not elsewhere classified