Linear friction welding of Ti6Al4V: experiments and modelling

被引：24
|
作者：
Schroeder, F. [1 ]
Ward, R. M. [1 ]
Walpole, A. R. [2 ]
Turner, R. P. [1 ]
Attallah, M. M. [1 ]
Gebelin, J. -C. [1 ]
Reed, R. C. [3 ]
机构：
[1] Univ Birmingham, Dept Met & Mat, Birmingham B15 2TT, W Midlands, England
[2] Rolls Royce PLC, Derby DE24 8BJ, England
[3] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2015年 / 31卷 / 03期
关键词：
Linear friction welding; Ti6Al4V; Flash formation; Ripple formation; TI-6AL-4V;
D O I：
10.1179/1743284714Y.0000000575
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Linear friction welding of the Ti6Al4V alloy is studied. A new definition of the energy input rate is proposed, based on an integration over time of the in-plane force and velocity; a strong correlation with the upset rate is then found. The effective friction coefficient is estimated to be 0.5+/-0.1 for varying frequencies and amplitudes, with only a weak dependence on the processing conditions displayed. A model is proposed that accounts for both the conditioning and equilibrium stages of the process, which is shown to be in good agreement with the experimental data. The model is used to study the mechanism by which the flash is formed. A criterion is proposed by which the rippled nature of its morphology can be predicted.
引用
收藏
页码：372 / 384
页数：13
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