Journal ArticleDOI
A brittle to ductile transition in NiAl of a critical grain size
Erland M. Schulson,D.R. Barker +1 more
TLDR
In this article, the effect of the grain size on the ductility of the material was investigated and it was found that the ductile capacity of NiAl is independent of grain size for aggregates of grains larger than about 20 microns.About:
This article is published in Scripta Metallurgica.The article was published on 1983-04-01. It has received 240 citations till now. The article focuses on the topics: Grain boundary strengthening & Grain boundary.read more
Citations
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Journal ArticleDOI
Overview No. 104 The physical and mechanical properties of NiAl
TL;DR: A critical review of the physical and mechanical properties of NiAl is presented in this paper, which includes electronic structure and bonding, crystal structure and phase stability, thermodynamic properties, elastic properties, and electrical, magnetic, and thermal properties.
Journal ArticleDOI
Physical and mechanical properties of the B2 compound NiAl
TL;DR: In this article, the authors summarize all available mechanical and pertinent physical properties on NiAl, stressing the most recent investigations, in an attempt to understand the behavior of NiAl and its alloys over a broad temperature range.
Journal ArticleDOI
The deformation behaviour of intermetallic superlattice compounds
Journal ArticleDOI
NiAl alloys for high-temperature structural applications
TL;DR: In this paper, the authors show that room-temperature ductility can be improved dramatically by microalloying with iron, gallium or molybdenum, and the next challenge is to develop an alloy which has the required balance of ductility, toughness and strength.
Journal ArticleDOI
Influence of grain size on the mechanical behaviour of some high strength materials
Alain Lasalmonie,J. L. Strudel +1 more
TL;DR: In this article, the influence of grain size in complex alloys by incorporating the Hall-Petch stress as one component of the internal stress helps in rationalizing the existence of an optimal grain size where creep resistance is maximized.
References
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Journal ArticleDOI
The ductile-brittle transition in the fracture of α-iron: I
TL;DR: In this article, a criterion for the transition from ductile to cleavage is calculated for fracture at a notch, and it is concluded that the temperature-dependence of this transition probably arises from the ductile-to-cleavage transition.
Journal ArticleDOI
The operative slip system and general plasticity of NiAl-II
A Ball,R.E Smallman +1 more
TL;DR: The slip system operating in the β-compound NiAl deformed at temperatures less than 0.45 Tm has been determined by slip trace and contrast analysis using electron microscopy, and the observed slip system compared with general predictions of the slip system in CsCl-type structures from anisotropic elasticity theory as mentioned in this paper.
Journal ArticleDOI
The deformation properties and electron microscopy studies of the intermetallic compound NiAl
A Ball,R.E Smallman +1 more
TL;DR: In this paper, the properties of NiAl specimens were investigated as a function of testing temperature and composition, and it was shown that at low temperatures the polycrystalline specimens fail in a brittle manner along grain boundaries after little or no plastic deformation.
Journal ArticleDOI
The Mechanical Behaviour of the Intermediate Phase NiAl
R. T. Pascoe,C. W. A. Newey +1 more
TL;DR: In this article, the deformation behavior of polycrystalline NiAl of various compositions, and of stoichiometric single crystals with different orientations, has been studied in compression in the temperature range 77-1300° K.
Journal ArticleDOI
Recrystallization and Grain Growth in NiAl
G. R. Haff,Erland M. Schulson +1 more
TL;DR: In this article, it was shown that upon annealing, warm-worked NiAl recrystallizes and undergoes subsequent grain growth in a manner typical of metals and alloys.