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An Investigation of Diffusion Bonding for Ti–6AI–4V Titanium Alloys

Published online by Cambridge University Press:  16 February 2011

Wei-Dong Huang ,
Zong-Yuan Zhang  and
Zhao-Rong Lin
Wei-Dong Huang
Affiliation:
Nanjing Aeronautical Institue, Department of Mechanical Engineering Nanjing, 210016, P.R.China
Zong-Yuan Zhang
Affiliation:
Nanjing Aeronautical Institue, Department of Mechanical Engineering Nanjing, 210016, P.R.China
Zhao-Rong Lin
Affiliation:
Nanjing Aeronautical Institue, Department of Mechanical Engineering Nanjing, 210016, P.R.China
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Abstract

Based on current theories of diffusion and creep cavity growth (or closure) at high temperatures, a physical analysis of diffusion bonding for the Ti–6Al–4V titanium alloy is given. The diffusion bonding is mainly pictured as a two—stage process:

1. The shrinkage process of cavities with shape change from elliptical to cylindrical;

2. In the second stage, the radii of the cylindrical cavities arc reduced and eliminated.

In addition, according to experimental work and previous theoretical models of diffusion bonding, a new model has been established in this paper, which can be used to predict the effect of process variables, such as temperature, pressure, surface roughness and bonding time on the bonding degree for Ti–6Al–4V by using mechanisms of creep and diffusion.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 196: Symposium T – Superplasticity in Metals, Ceramics, and Intermetallics , 1990 , 181
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

1. Derby, B., Wallach, E. R., Proc. Conf.on ‘The joining of metals”, Vol.II, London (1981)p89;Metal Science Vol.16 (1982) p49, Vol. 18 (1984) p427.Google Scholar
2. Hamilton, C.H., “Titanium science and technology”Vol.1. New York, Plenum press, 1973 p625.Google Scholar