2015
DOI: 10.1016/j.cirpj.2015.07.001
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Creep feed grinding of γ-TiAl using single layer electroplated diamond superabrasive wheels

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Cited by 50 publications
(21 citation statements)
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“…Additionally, surface cracks together with workpiece tempering/burn were visible even when operating at parameters corresponding to low specific material removal rates (Q 0 w = 5 mm 3 /mm s) when using CBN wheels [74]. This corroborated the results of Hood et al [94], who observed extensive burning and fracture in all trials involving CBN, whereas no visible macro cracking was detected on surfaces ground using diamond wheels, see Fig. 9.…”
Section: Methodssupporting
confidence: 90%
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“…Additionally, surface cracks together with workpiece tempering/burn were visible even when operating at parameters corresponding to low specific material removal rates (Q 0 w = 5 mm 3 /mm s) when using CBN wheels [74]. This corroborated the results of Hood et al [94], who observed extensive burning and fracture in all trials involving CBN, whereas no visible macro cracking was detected on surfaces ground using diamond wheels, see Fig. 9.…”
Section: Methodssupporting
confidence: 90%
“…The higher thermal conductivity of diamond ($2000 W/m K) and CBN ($1300 W/m K) in comparison to SiC grains ($40 W/m K) allowed increments in cutting speed up to 50 m/s before onset of surface burn [94,127]. A typical surface defect that occurs after grinding of g-TiAl is bending of the lamellae due to mechanical loading, see example in Fig.…”
Section: Methodsmentioning
confidence: 99%
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“…Despite the potential for gamma titanium aluminide (γ-TiAl) intermetallic alloys to replace heavier nickel based superalloy components such as turbine and compressor blades in gas turbine aeroengines, few civil or military applications currently exist. Several factors are responsible, not least the lack of a comprehensive material supply base and the requirement for stringent safety standards, but also alloy sensitivity to secondary production/manufacturing methods and associated post processing costs [1]. Key conventional machining operations for blades include high speed milling and grinding, the latter proving less of a problem in terms of machinability and the generation of acceptable workpiece surface integrity, due in part to the low room temperature ductility (~2%) of many γ-TiAl alloys [2].…”
Section: Introductionmentioning
confidence: 99%
“…by carrying it out at lower cutting speed and depth of cut [4]; supervision of the machining process, i.e. by monitoring grinding power, temperature [5] or force [6]; use of the grinding wheels with diamond [7], cubic boron nitride (CBN) (i.e. [8,9]), silicon carbide (SiC) (i.e.…”
Section: Introductionmentioning
confidence: 99%