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Effect of tungsten additions on the mechanical properties of Ti-6Al-4V
- Source :
-
Materials Science & Engineering: A . Apr2005, Vol. 396 Issue 1/2, p99-106. 8p. - Publication Year :
- 2005
-
Abstract
- Abstract: The alloy Ti-6Al-4V was modified by addition of 10wt.% tungsten through powder metallurgy. Depending on the initial W powder size, different materials were formed after powder densification: (i) “alloys” for fine (0.7 and 2μm) W powders which were almost completely dissolved in the Ti-6Al-4V matrix; (ii) “alloyed composites” for intermediate (12 and <45μm) W powders which were partially dissolved; (iii) and “composites” for coarse (<250μm) W powders which were nearly un-dissolved. In all cases, tungsten strengthens Ti-6Al-4V, but much more so when dissolved in the matrix than as a second phase. Ductility was not affected by W additions for the fully-dissolved alloys, but was reduced in the case of composites with W particles, which exhibited fracture or pull-out from the matrix. Flaw sensitivity was apparent from strain hardening being much lower in tension than in compression, and from a much reduced ductility exhibited by one specimen with residual porosity. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09215093
- Volume :
- 396
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Materials Science & Engineering: A
- Publication Type :
- Academic Journal
- Accession number :
- 17643259
- Full Text :
- https://doi.org/10.1016/j.msea.2005.01.051