Effect of deformation processing on mechanical properties of Nb-10 a/o Si IN-SITU composite

I. Weiss; M. Thirukkonda; R. Srinivasan

doi:10.1557/PROC-322-377

Effect of deformation processing on mechanical properties of Nb-10 a/o Si IN-SITU composite

I. Weiss, M. Thirukkonda, R. Srinivasan

Mechanical and Materials Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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	English
Title of host publication	High Temperature Silicides and Refractory Alloys
Editors	C.L. Briant, J.J. Petrovic, B.P. Bewlay, A.K. Vasudevan, H.A. Lipsitt
Publisher	Materials Research Society
Pages	377-386
Number of pages	10
ISBN (Print)	1558992219
DOIs	https://doi.org/10.1557/PROC-322-377
State	Published - 1993
Event	Proceedings of the 1993 Fall MRS Meeting - Boston, MA, USA Duration: Nov 29 1993 → Dec 2 1993

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	322
ISSN (Print)	0272-9172

Conference

Conference	Proceedings of the 1993 Fall MRS Meeting
City	Boston, MA, USA
Period	11/29/93 → 12/2/93

ASJC Scopus Subject Areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Disciplines

Materials Science and Engineering
Mechanical Engineering

Access to Document

10.1557/PROC-322-377License: Unspecified

Cite this

Weiss, I., Thirukkonda, M., & Srinivasan, R. (1993). Effect of deformation processing on mechanical properties of Nb-10 a/o Si IN-SITU composite. In C. L. Briant, J. J. Petrovic, B. P. Bewlay, A. K. Vasudevan, & H. A. Lipsitt (Eds.), High Temperature Silicides and Refractory Alloys (pp. 377-386). (Materials Research Society Symposium Proceedings; Vol. 322). Materials Research Society. https://doi.org/10.1557/PROC-322-377

Effect of deformation processing on mechanical properties of Nb-10 a/o Si IN-SITU composite. / Weiss, I.; Thirukkonda, M.; Srinivasan, R.
High Temperature Silicides and Refractory Alloys. ed. / C.L. Briant; J.J. Petrovic; B.P. Bewlay; A.K. Vasudevan; H.A. Lipsitt. Materials Research Society, 1993. p. 377-386 (Materials Research Society Symposium Proceedings; Vol. 322).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Weiss, I, Thirukkonda, M & Srinivasan, R 1993, Effect of deformation processing on mechanical properties of Nb-10 a/o Si IN-SITU composite. in CL Briant, JJ Petrovic, BP Bewlay, AK Vasudevan & HA Lipsitt (eds), High Temperature Silicides and Refractory Alloys. Materials Research Society Symposium Proceedings, vol. 322, Materials Research Society, pp. 377-386, Proceedings of the 1993 Fall MRS Meeting, Boston, MA, USA, 11/29/93. https://doi.org/10.1557/PROC-322-377

Weiss I, Thirukkonda M, Srinivasan R. Effect of deformation processing on mechanical properties of Nb-10 a/o Si IN-SITU composite. In Briant CL, Petrovic JJ, Bewlay BP, Vasudevan AK, Lipsitt HA, editors, High Temperature Silicides and Refractory Alloys. Materials Research Society. 1993. p. 377-386. (Materials Research Society Symposium Proceedings). doi: 10.1557/PROC-322-377

Weiss, I. ; Thirukkonda, M. ; Srinivasan, R. / Effect of deformation processing on mechanical properties of Nb-10 a/o Si IN-SITU composite. High Temperature Silicides and Refractory Alloys. editor / C.L. Briant ; J.J. Petrovic ; B.P. Bewlay ; A.K. Vasudevan ; H.A. Lipsitt. Materials Research Society, 1993. pp. 377-386 (Materials Research Society Symposium Proceedings).

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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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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.

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Effect of deformation processing on mechanical properties of Nb-10 a/o Si IN-SITU composite

Abstract

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ASJC Scopus Subject Areas

Disciplines

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