Deformation mechanisms of Ti-6Al-4V alloy with a martensitic microstructure subjected to oligocyclic fatigue

被引：55
|
作者：
Manero, JM [1 ]
Gil, FJ [1 ]
Planell, JA [1 ]
机构：
[1] Univ Politecn Cataluna, ETSEIB, Dept Mat Sci & Met, Barcelona 08035, Spain
来源：
ACTA MATERIALIA | 2000年 / 48卷 / 13期
关键词：
transmission electron microscopy (TEM); biomaterials; titanium alloys; fatigue; martensite;
D O I：
10.1016/S1359-6454(00)00152-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The objective of this work is to characterise the deformation modes when Ti-6Al-4 V alloy with alpha' martensitic structure is subjected to oligocyclic fatigue at various strain amplitudes. It is believed that, unlike pure titanium single crystals at room temperature, {1 (1) over bar 01} twinning occurs in the alpha' martensitic microstructure, because of the factors, such as the prior existence of dislocations or alpha'/alpha' interfaces, which may reduce the activation energy required for the nucleation of {10 (1) over bar 1} twins. (C) 2000 Acta Metallurgica I,lc. Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：3353 / 3359
页数：7
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