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Twin-Boundary Assisted Crack Tip Plasticity and Toughening in Lamellar γ-TiAl

Social Science Research Network, 2021
The internal twin-boundaries in lamellar γ-TiAl alloys, namely true-twin (TT), rotational boundary(RB), and pseudo-twin (PT), are known to be effective in strengthening the TiAl microstructures.
A. Neogi, R. Janisch
semanticscholar   +1 more source

Origin of Enhanced Room Temperature Ductility in Tial Alloys: Reducing Activation Difference of Deformation Mechanism of γ Phase

Social Science Research Network, 2021
We systematically investigated the effect of tensile loading direction and additional elements (Cr and Nb) on the initial deformation mechanism in the γ phase of TiAl alloys, which is one of the crucial factors to decide room temperature ductility. First,
Ji Young Kim   +5 more
semanticscholar   +1 more source

Effects of laser polishing on surface morphology and mechanical properties of additive manufactured TiAl components

Other Conferences, 2020
The laser deposition manufacturing (LMD) is a free-form metal deposition process, which allows generating a prototype or small series of near net-shape structures.
Zifa Xu   +5 more
semanticscholar   +1 more source

Advanced TiAl Based Alloys: From Polycrystals to Polysynthetic Twinned Single Crystals

Advanced Functional Materials
TiAl alloys stand out for low density, high specific strength, and excellent creep resistance, making them promising for high‐temperature aerospace applications. However, traditional TiAl alloys suffer from poor room‐temperature ductility and low service
Zhiqiang Zhao   +4 more
semanticscholar   +1 more source

Oxidation protection of γ-TiAl-based alloys – A review

Intermetallics, 2015
R. Pflumm, S. Friedle, M. Schütze
exaly   +2 more sources

Cyclic-oxidation behavior of TiAl and of TiAl alloys

Oxidation of Metals, 1993
The cyclic-oxidation behavior of (in w/o) Ti-36Al, Ti-35Al-0.1C, Ti-35Al-1.4V-0.1C and Ti-35Al-5Nb-0.1C was studied between 800 and 1000° C in air. A few experiments were also performed in oxygen. Scale spallation after oxidation in air occurs during cooling on TiAl, TiAl-C, and TiAl-V at or close to the metal/scale interface when a critical scale ...
S. Becker, M. Sch�tze, A. Rahmel
openaire   +1 more source

Twinning in TiAl

Scripta Metallurgica, 1989
Abstract The results of this investigation are in agreement with the findings of Richards and Cahn which show that the formation of twin-related TiAl regions, TiAl T , and the Ti 3 Al phase, rather than TiAl deformation twins, will be favored energetically in a two-phase titanium aluminide alloy.
C.R. Feng, D.J. Michel, C.R. Crowe
openaire   +1 more source

Feasibility study of a flexible grinding method for precision machining of the TiAl-based alloy

Materials and Manufacturing Processes, 2019
This study presents detailed experimental investigations on precision machining of the TiAl-based alloy with an abrasive belt flexible grinding method.
Lai Zou, Yun Huang, Guojun Zhang, X. Cui
semanticscholar   +1 more source

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