Characterization of nitrogen-doped NiAl

Journal Article · Fri Apr 01 04:00:00 EST 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90396-4· OSTI ID:5264238

Noebe, R D; Garg, A ^[1]

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1. NASA, Cleveland, OH (United States). Lewis Research Center

Poor tensile ductility and fracture toughness below the brittle-to-ductile transition temperature are the primary factors limiting acceptance of NiAl as a high temperature structural material. Consequently, current research has been directed towards understanding the relationship between various metallurgical parameters and mechanical behavior, with emphasis on interstitial impurity effects. Interstitial elements do exert some influence on the flow behavior of single crystal NiAl. Therefore, it is probably safe to conclude that interstitial elements have a definitive effect on the flow behavior of NiAl, but the relationship between interstitial elements and fracture behavior is still unclear. Furthermore, there has been little work done to identify those interstitial elements responsible for the various observations recorded in the literature. Consequently, the purpose of this note is to describe the effect of nitrogen doping on the microstructure and tensile properties of NiAl.

• OSTI ID: 5264238
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 30:7; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
DATA
ELEMENTS
EXPERIMENTAL DATA
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INFORMATION
INTERMETALLIC COMPOUNDS
MATERIALS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
MICROSTRUCTURE
NICKEL ALLOYS
NITROGEN
NITROGEN ADDITIONS
NONMETALS
NUMERICAL DATA
TENSILE PROPERTIES