Title

IN SITU DIAMOND WIRES – PART I: THE Cu 15 VOL% Nb HIGH STRENGHT CABLE

IN SITU DIAMOND WIRES – PART I: THE Cu 15 VOL% Nb HIGH STRENGHT CABLE

Authorship

FILGUEIRA, MARCELLO; PINATTI, DALTRO GARCIA

FILGUEIRA, MARCELLO

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PINATTI, DALTRO GARCIA

I am this author

DOI

10.5151/2594-5327-C01147

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Abstract

Comercial Diamond wires are cutting tools used in the slabbing of dimension stones, such as marbles and granites, as well as in the cutting of concrete structures. This tool consists of AISI316 stainless cable on which diamond annular segments (pearls) are mounted, with spacing between them. It was idealized a new route to process diamond wires, called “In Situ” technology, whose fabrication envolves mechanical conformation process such as rotary forging and wire drawing, copper tubes restackings, and thermal treatment of sintering and recrystallization. It was used the Cu15vol%Nb composite wires as the high tensile strength cable, covered with a external cutting rope made in bronze 4 weight % diamond composite, along the overall wire surface. In this work is show the manufacture route of the Cu 15 vol %Nb composite. Investigations on the mechanical behaviour and microstructural evolution showed an ultimate tensile strength of 960MPa, and deformation ≈ 2,0%. This anomalous strength increase is attributed to the fact that niobium filaments attain a ribbon like shape during processing, thus acting as barrier to copper dislocations.

Comercial Diamond wires are cutting tools used in the slabbing of dimension stones, such as marbles and granites, as well as in the cutting of concrete structures. This tool consists of AISI316 stainless cable on which diamond annular segments (pearls) are mounted, with spacing between them. It was idealized a new route to process diamond wires, called “In Situ” technology, whose fabrication envolves mechanical conformation process such as rotary forging and wire drawing, copper tubes restackings, and thermal treatment of sintering and recrystallization. It was used the Cu15vol%Nb composite wires as the high tensile strength cable, covered with a external cutting rope made in bronze 4 weight % diamond composite, along the overall wire surface. In this work is show the manufacture route of the Cu 15 vol %Nb composite. Investigations on the mechanical behaviour and microstructural evolution showed an ultimate tensile strength of 960MPa, and deformation ≈ 2,0%. This anomalous strength increase is attributed to the fact that niobium filaments attain a ribbon like shape during processing, thus acting as barrier to copper dislocations.

Keywords

Cu-Nb composites, Anomalous Strength, dislocation locking

Cu-Nb composites, Anomalous Strength, dislocation locking