Microstructural Refinement of Boron Containing β-Solidifying γ-Titanium Aluminide Alloys

Michael Oehring; Andreas Stark; Jonathan D.H. Paul; Thomas Lippmann; Florian Pyczak

doi:10.4028/www.scientific.net/MSF.706-709.1089

Paper Titles

High-Temperature Tensile Properties of Ti-Al-X (X=Cr,W) Consisting of α₂, β and γ in Three Phases
p.1066

Surface Effects on the Mechanical Properties of Gamma Titanium Aluminides
p.1071

Deformation Microstructures of Two-Phase Intermetallic Alloy Composed of Ni₃Al and Ni₃V in Single Crystalline Form
p.1077

Friction and Wear Properties of Fe₇Mo₆-Based Alloy under Various Sliding Conditions
p.1083

Microstructural Refinement of Boron Containing β-Solidifying γ-Titanium Aluminide Alloys
p.1089

Density Functional Theory and Ab Initio Molecular Dynamics Study of the Effect of Ti and Zr Transition Metals in D0₃ Fe₃Al
p.1095

The Microstructure, Creep, and Hardness Properties of Powder Metallurgy Beta Gamma TiAl-4Nb-3Mn Alloy
p.1100

First Principles Investigation of Interaction of Oxygen with Low Index Surfaces of γ-TiAl
p.1106

The Effect of EMS on the Microstructure of LPSO Mg-Zn-Y Cast Alloy
p.1117

HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Microstructural Refinement of Boron Containing...

Microstructural Refinement of Boron Containing β-Solidifying γ-Titanium Aluminide Alloys

Abstract:

β solidifying γ titanium aluminide alloys exhibit fine and homogeneous microstructures in the cast condition, in particular if the alloys contain B as a grain refining agent. Following work in the literature [1], it is demonstrated that the grain refining effect due to B is solely attributed in such alloys to its effect on the solid-state β/α transformation. The results further show that grain refinement in these materials can be obtained by a simple heat treatment, even if the microstructure has been extensively coarsened through prior heat-treatment.

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Materials Science Forum (Volumes 706-709)

Pages:

1089-1094

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https://doi.org/10.4028/www.scientific.net/MSF.706-709.1089

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Online since:

January 2012

Authors:

Michael Oehring, Andreas Stark, Jonathan D.H. Paul, Thomas Lippmann, Florian Pyczak

Keywords:

Gamma TiAl Alloys, Grain Refinement through B, Solidification, β/α Transformation

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