Results 11 to 20 of about 86,765,181 (295)
A Study of Mechanics in Brittle–Ductile Cutting Mode Transition
Micromachines, 2018 This paper presents an investigation of the mechanism of the brittle–ductile cutting mode transition from the perspective of the mechanics. A mechanistic model is proposed to analyze the relationship between undeformed chip thickness, deformation, and ...
Gaobo Xiao, Mingjun Ren, Suet To
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The brittle-to-ductile transition in germanium
Acta Metallurgica et Materialia, 1994 Abstract The brittle-to-ductile transition in precracked germanium crystals has been studied experimentally. Germanium undergoes a “smooth” brittle-ductile transition, where the stress to fracture rises steadily with temperature, associated with dislocation activity around the crack front at temperatures well below the transition temperature.
Serbena, F, Roberts, S
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The brittle-to-ductile transition in silicon
Materials Science and Engineering: A, 1988 Recent experiments on the brittle-ductile transition (BDT) of precracked specimens of Si show that the transition is sharp, and that the strain rate dependence of the transition temperature, Tc, is controlled by dislocation velocity. Etch pit observations show that dislocation generation from the crack tip begins at K just below KIc, from a small ...
Samuels, J, Roberts, S, Hirsch, P
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Brittle–ductile transition during diamond turning of single crystal silicon carbide [PDF]
, 2013 In this experimental study, diamond turning of single crystal 6H-SiC was performed at a cutting speed of 1 m/s on an ultra-precision diamond turning machine (Moore Nanotech 350 UPL) to elucidate the microscopic origin of ductile-regime machining ...
Reuben, Robert L +5 more
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Atomistic aspects of ductile responses of cubic silicon carbide during nanometric cutting [PDF]
, 2011 Cubic silicon carbide (SiC) is an extremely hard and brittle material having unique blend of material properties which makes it suitable candidate for microelectromechanical systems and nanoelectromechanical systems applications.
Reuben, Robert L +15 more
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Brittle-to-ductile transitions in glasses: Roles of soft defects and loading geometry [PDF]
MRS Bulletin, 2021 14 pages, 6 figures (including Methods) + Supplementary Material (8 pages, 7 figures)
David Richard +2 more
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Brittle-to-ductile transition in a fiber bundle with strong heterogeneity [PDF]
Physical Review E, 2013 8 pages, 9 ...
Kovacs, K. +3 more
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Micro- versus macro- modelling of creep damage [PDF]
Computer Methods in Materials Science, 2009 In the present paper the continuous approach to model brittle-ductile transition in creep failure phenomenon is replaced by Cellular Automata (CA) model. This allows to back-up this complex phenomenon by relating it to microstructural changes.
Krzysztof Nowak
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Experimental study of the brittle–ductile transition in hot cutting of SG iron specimens [PDF]
, 2013 http://www.sciencedirect.com/science/article/pii/S0924013612002579The present paper investigates the brittle-ductile transition (BDT) of the primary shear zone during cutting of spheroidal graphite (SG) iron in the austenitization temperature range ...
EL MANSORI, Mohamed +2 more
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Dislocation dynamics and brittle-to-ductile transitions
Materials Science and Engineering: A, 1993 Abstract The validity of different types of models for crack-dislocation interactions and their effect on fracture is discussed. The brittle-to-ductile transition (BDT) in precracked silicon and sapphire can be described by a two-stage dynamic model based on dislocation motion to and around the crack tip.
Roberts, S, Ellis, M, Hirsch, P
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