Compressive Mechanical Properties of NiAl/Cr(Nb) Alloy Prepared by Rapid Solidification Processing

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)684-688
Journal / PublicationAdvanced Engineering Materials
Volume9
Issue number8
Online published10 Jul 2007
Publication statusPublished - Aug 2007
Externally publishedYes

Abstract

Inadequate strength at elevated temperatures and low fracture toughness at ambient temperatures are the major deficiencies preventing the B2 aluminide NiAl as an advanced structural material used at high temperatures. In this study, an IP alloy with the composition of NiAl‐Cr/Nb alloy was chosen and prepared by injection casting, and its microstructural morphology and mechanical properties were investigated. The compression testing results demonstrate that the resultant alloy exhibits improved compressive ductility and yield strength at room temperature as compared with that of the same alloy prepared by conventional ingot casting.

Research Area(s)

  • fracture toughness, Ni superalloys, Rapid solidification