Modeling of the phase transformations in near-β titanium alloys during the cooling after forging

被引:25
|
作者
Teixeira, Julien Da Costa [1 ,2 ]
Appolaire, Benoit [1 ]
Aeby-Gautier, Elisabeth [1 ]
Denis, Sabine [1 ]
Hericher, Ludovic [1 ]
机构
[1] Ecole Mines, LSG2M, F-54042 Nancy, France
[2] Snecma, F-92702 Colombes, France
关键词
titanium alloys; phase transformation; kinetics; modeling;
D O I
10.1016/j.commatsci.2007.07.056
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A complete modeling of the phase transformation during the cooling following the forging has been carried out for near-beta titanium alloys. To that aim, we have improved a model predicting the influence of the deformation of the beta phase on the alpha phase precipitation during isothermal treatments, by extending its range of application to the case of cooling treatments. In particular, the precipitation of the intragranular morphology alpha(WI) has been introduced. We have proceeded step by step: calculations of heat treatments without any previous forging have first been performed. Then, the influence of the initial beta grain size have been studied. Finally, the influence of a previous deformation coming from the forging has been investigated. At each step, the calculations have been compared to some experiments, showing an good overall agreement. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:266 / 280
页数:15
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