Machining of Titanium Alloys

Kahles, John F.; Field, Michael; Eylon, D.; Froes, F. H.

doi:10.1007/bf03259441

Cited by 74 publications

(61 citation statements)

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“…Ti-Ag alloys (5, 10, and 20mass% Ag) and Ti-Cu alloys (2,5, and 10mass% Cu) were cast into magnesia molds using a dental casting machine, and their grindability was investigated.…”

Section: Methodsmentioning

confidence: 99%

Grindability of Dental Cast Ti-Ag and Ti-Cu Alloys

Kikuchi

Takahashi

Okabe

et al. 2003

Dental Materials Journal

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“…Ti-Ag alloys (5, 10, and 20mass% Ag) and Ti-Cu alloys (2,5, and 10mass% Cu) were cast into magnesia molds using a dental casting machine, and their grindability was investigated.…”

Section: Methodsmentioning

confidence: 99%

Grindability of Dental Cast Ti-Ag and Ti-Cu Alloys

Kikuchi

Takahashi

Okabe

et al. 2003

Dental Materials Journal

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“…To our knowledge, there is no model that describes the grindability of metals or alloys in terms of the underlying microstructure or fracture mechanisms in the literature. [20] The absence of such a model makes it difficult to archive a balance of mechanical properties and grindability through microstructural control or alloy addition. For example, a high-volume fraction of brittle phase in the microstructure might enhance grindability at the expense of mechanical properties such as yield strength and tensile ductility.…”

Section: Introductionmentioning

confidence: 99%

Grindability of Ti alloys

Chan

Koike

Okabe

2006

Metall Mater Trans A

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The grindability of Ti-based alloys was analyzed by considering the fracture behavior of individual alloys in response to the stress field of a grinding wheel. First, the stress field under a grinding wheel was computed by treating the grinding wheel as a cylindrical disk with a flat region acting on a flat substrate. The initiation and propagation of microcracks in the substrate was then examined on the basis of the contact stress field and one of two fracture criteria: (1) a critical stress criterion for the onset of cleavage crack initiation, and (2) a critical stress intensity factor criterion for the initiation and propagation of shear cracks. Grindability was computed as a function of grinding speed and microstructure for several Ti-based cast alloys containing ␣, ␣ ϩ ␤, or ␤ microstructure with or without the intermetallic precipitates. Model predictions indicated that the grindability of Ti alloys increases with decreasing fracture toughness or tensile ductility. The theoretical results are compared against experimental data in the literature to elucidate the roles of microstructure in grindability. The comparison revealed that alloying addition that leads to the formation of brittle intermetallics enhances grindability by reducing fracture toughness, tensile ductility, and the resistance to crack initiation and propagation.

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“…They are also being used increasingly in chemical processing, biomedical, automotive, and nuclear industries. However, titanium alloys are difficult to machine due to their high strength at elevated temperature, relatively low modulus of elasticity, low thermal conductivity and high chemical reactivity [1][2][3][4][5][6]. Cutting of titanium alloys has always been a topic of great interest for industrial production and scientific research worldwide.…”

Section: Introductionmentioning

confidence: 99%