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Theoretical Consideration of Rare Earth Metal Compounds as Tool Materials for Titanium Machining

1993; Elsevier BV; Volume: 42; Issue: 1 Linguagem: Inglês

10.1016/s0007-8506(07)62404-4

1726-0604

Boris Krämer, D.V. Viens, Si Ying Chin,

Titanium Alloys Microstructure and Properties

Previous work has suggested that tool materials that are effective in the machining of titanium, such as tungsten carbide and diamond, promote seizure between the tool and chip, producing a diffusion-limited, low wear regime. Another strategy for decreasing tool wear is to identify materials that have high chemical stability with respect to titanium. Some rare earth metals are known to have relatively high enthalpies of solution in titanium and their compounds are expected to have corresponding low solubilities. Although much needed data concerning the chemical and mechanical properties of rare earth compounds is unavailable, the paper represents an attempt to evaluate the potential of various rare earth metal compounds as tool materials for titanium machining, on the basis of the limited available data.