Effect of Deformation Processing on Mechanical Properties of Nb-10 a/o Si In-situ Composite

Isaac Weiss; M. Thirukkonda; Raghavan Srinivasan

doi:10.1557/PROC-322-377

Effect of Deformation Processing on Mechanical Properties of Nb-10 a/o Si In-situ Composite

Isaac Weiss, M. Thirukkonda, Raghavan Srinivasan

Wright State University

Research output: Other contribution

Abstract

Nb-10 a/o Si alloy is an in-situ composite. The microstructure of the cast alloy consists of pro-eutectic Nb dendrites distributed in a matrix of eutectic Nb ₃ Si + Nb phases. The microstructure of the as-cast alloy was modified by multiple hot extrusions producing an oriented composite. Extensive grain size refinement occurred in both the Nb and Nb ₃ Si phases. The ductile primary (pro-eutectic) Nb particles were aligned along the extrusion direction. Bend strength and fracture toughness measured by three point bend and four point bend tests, respectively, showed that both the yield strength and fracture toughness of the alloy increases considerably following this thermomechanical processing. These improvements have been attributed to the changes in size, morphology and spacing of the constituent phases and their microstructural refinement.

Original language	American English
DOIs	https://doi.org/10.1557/PROC-322-377
State	Published - Jan 1 1994

Disciplines

Engineering
Materials Science and Engineering
Mechanical Engineering

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title = "Effect of Deformation Processing on Mechanical Properties of Nb-10 a/o Si In-situ Composite",

abstract = " Nb-10 a/o Si alloy is an in-situ composite. The microstructure of the cast alloy consists of pro-eutectic Nb dendrites distributed in a matrix of eutectic Nb 3 Si + Nb phases. The microstructure of the as-cast alloy was modified by multiple hot extrusions producing an oriented composite. Extensive grain size refinement occurred in both the Nb and Nb 3 Si phases. The ductile primary (pro-eutectic) Nb particles were aligned along the extrusion direction. Bend strength and fracture toughness measured by three point bend and four point bend tests, respectively, showed that both the yield strength and fracture toughness of the alloy increases considerably following this thermomechanical processing. These improvements have been attributed to the changes in size, morphology and spacing of the constituent phases and their microstructural refinement.",

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doi = "10.1557/PROC-322-377",

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T1 - Effect of Deformation Processing on Mechanical Properties of Nb-10 a/o Si In-situ Composite

AU - Weiss, Isaac

AU - Thirukkonda, M.

AU - Srinivasan, Raghavan

PY - 1994/1/1

Y1 - 1994/1/1

N2 - Nb-10 a/o Si alloy is an in-situ composite. The microstructure of the cast alloy consists of pro-eutectic Nb dendrites distributed in a matrix of eutectic Nb 3 Si + Nb phases. The microstructure of the as-cast alloy was modified by multiple hot extrusions producing an oriented composite. Extensive grain size refinement occurred in both the Nb and Nb 3 Si phases. The ductile primary (pro-eutectic) Nb particles were aligned along the extrusion direction. Bend strength and fracture toughness measured by three point bend and four point bend tests, respectively, showed that both the yield strength and fracture toughness of the alloy increases considerably following this thermomechanical processing. These improvements have been attributed to the changes in size, morphology and spacing of the constituent phases and their microstructural refinement.

AB - Nb-10 a/o Si alloy is an in-situ composite. The microstructure of the cast alloy consists of pro-eutectic Nb dendrites distributed in a matrix of eutectic Nb 3 Si + Nb phases. The microstructure of the as-cast alloy was modified by multiple hot extrusions producing an oriented composite. Extensive grain size refinement occurred in both the Nb and Nb 3 Si phases. The ductile primary (pro-eutectic) Nb particles were aligned along the extrusion direction. Bend strength and fracture toughness measured by three point bend and four point bend tests, respectively, showed that both the yield strength and fracture toughness of the alloy increases considerably following this thermomechanical processing. These improvements have been attributed to the changes in size, morphology and spacing of the constituent phases and their microstructural refinement.

UR - https://corescholar.libraries.wright.edu/mme/155

UR - http://dx.doi.org/10.1557/PROC-322-377

U2 - 10.1557/PROC-322-377

DO - 10.1557/PROC-322-377

M3 - Other contribution

ER -

Effect of Deformation Processing on Mechanical Properties of Nb-10 a/o Si In-situ Composite

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