Characterization of the α phase nucleation in a two-phase metastable β titanium alloy

被引:0
|
作者
A. Lenain
N. Clément
P. J. Jacques
M. Véron
机构
[1] Université Catholique de Louvain,Département des Sciences des Matériaux et des Procédés, Unité d’Ingénierie des Matériaux et des Procédés (IMAP)
[2] Centre National de la Recherche Scientifique (CNRS) 5614,Laboratoire de Thermodynamique et Physicochimie Métallurgiques (LTPCM)
来源
Journal of Materials Engineering and Performance | 2005年 / 14卷
关键词
α nucleation; β titanium alloy; microstructure; Ti LCB;
D O I
暂无
中图分类号
学科分类号
摘要
Beta titanium alloys are increasingly the best choice for automotive and aerospace applications due to their high performance-to-density ratio. Among these alloys, the TIMETAL Ti-LCB is already used in the automotive industry because it presents excellent mechanical properties and a lower cost compared with other Ti alloys. The current study deals with the characterization of the nucleation and growth of the α phase in several thermomechanical processes, because the distribution and size of the α phase strongly influence the mechanical properties of the resulting microstructures. Several heat treatments were conducted after either cold rolling or annealing. The resulting microstructures were characterized by scanning electron microscopy, transmission electron microscopy, x-ray diffraction, or electron backscatter diffraction. It was observed that the morphology and the volume fraction of the α phase are strongly dependent on the holding temperature, on the heating or cooling rate, and on the β grain size.
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页码:722 / 727
页数:5
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