Journal ArticleDOI
Effect of ternary additions on mechanical properties of TiAl
TLDR
In this paper, the effect of ternary additions such as V, Cu, Nb, Zr and Mn as well as the deviation from the stoichiometric composition to the Al-rich composition on mechanical properties of TiAl was studied at room temperature (RT) in air, and RT, 873 and 1073 K in vacuum.About:
This article is published in Acta Materialia.The article was published on 1998-03-23. It has received 91 citations till now. The article focuses on the topics: Intergranular fracture & Work hardening.read more
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Creep of a beta phase-containing TiAl alloy
TL;DR: The creep properties of a powder-metallurgy Ti 46.5Al, 2Cr 2Nb, 0.8Mo 0.2Si alloy containing beta phase were investigated in this article.
Journal ArticleDOI
High temperature tribological behavior of a Ti-46Al-2Cr-2Nb intermetallics
Jun Cheng,Jun Yang,Xinghua Zhang,Hong Zhong,Jiqiang Ma,Fei Li,Licai Fu,Qinling Bi,Jinshan Li,Weimin Liu +9 more
TL;DR: In this article, the friction and wear behavior of a hot-pressed Ti-46Al-2Cr-2Nb alloy was investigated using a home-built ball-on-disc tribotester against a Si3N4 ceramic ball at a constant speed of 0.188m−s−1 and an applied load of 10 n from 20 to 900 n.
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Thermal stability of Ti-44Al-4Nb-4Hf-0.2Si-1B alloy
Zhenyu Huang,Zhenyu Huang +1 more
TL;DR: In this paper, a near lamellar γ−TiAl alloy was ingot cast and exposed at 700°C for up to 10,000h, and the ductility was only 1/4 of the original value.
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Effects of Fe, Co and Ni elements on the ductility of TiAl alloy
TL;DR: In this paper, the average fracture strain of TiAl alloy increases from 17.3% to 19.1% and 18.0%, respectively, with the addition of 3 at.% Fe and Co atoms.
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First-principles study of site occupancy of dilute 3d, 4d and 5d transition metal solutes in L10 TiAl
TL;DR: Using a statistical-mechanical Wagner-Schottky model parametrized by first-principles density-functional (DFT-GGA) calculations on 32-atom supercells, Wang et al. as mentioned in this paper predict the lattice site occupancy of 3d (Ti), 4d (Zr-Ag) and 5d (Hf-Au) transition-metal elements in L10 TiAl intermetallic compound as a function of both alloy composition and temperature.
References
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High-temperature ordered intermetallic alloys
TL;DR: In this article, the authors describe the behavior of grain boundaries in a two-dimensional model ordered alloy and the effects of elastic anisotropy on the anomalious yield behavior of cubic ordered alloys.
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Positive temperature dependence of the yield stress in TiAl L10 type superlattice intermetallic compound single crystals at 293–1273 K
TL;DR: In this paper, a floating zone method was used to obtain the fundamental knowledge on the plasticity of TiAl single crystals with five orientations and the yield stresses of all orientations tested show a positive temperature dependence similarly to most Ll2 type superlattice intermetallic compounds.
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Plastic Deformation of Fine‐Grained Alumina (Al2O3): I, Interface‐Controlled Diffusional Creep
TL;DR: In this paper, the deformation dynamics of fine-grained alumina polycrystals (grain size 1 to 15 μm) were studied and diffusional creep, basal slip, and unaccommodated grain-boundary sliding were investigated.