Influence of impact on the mechanical behaviour of a cast and a forged gamma based TiAl alloy

被引：0
|
作者：
Gebhard, S. [1 ]
Peters, P. W. M. [1 ]
Roth-Fagaraseanu, D.
Voggenreiter, H. [1 ]
机构：
[1] German Aerosp Ctr, Inst Mat Res, D-51147 Cologne, Germany
来源：
STRUCTURAL ALUMINIDES FOR ELEVATED TEMPERATURES: GAMMA TITANIUM AND OTHER: METALLIC ALUMINIDES | 2008年
关键词：
titanium aluminides; impact; mechanical properties;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of impact on the mechanical behaviour of a cast TNBV3B TiAl-alloy and a forged TNBV3B TiAl-alloy with a 50% higher strength has been investigated, Impact tests are performed and the caused damage has been evaluated as a function of the impact speed and the particle weight (the impact energy) in relation to the specimen thickness and location of the impact. Impact near the specimen edge produces a severer damage as an impact in the centre. This is shown with the aid of residual strength experiments. The residual strength could be described on the basis of a linear elastic fracture mechanics analysis and an average fracture toughness of 16 Wa(m)(1/2) for the cast alloy.
引用
收藏
页码：61 / +
页数：2
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