Community Research and Development Information Service - CORDIS


Deformation dilatometers offer valuable and economical information in advance of production-scale metal-deformation operations because of their flexibility regarding temperature-time cycle parameters and the possibility of analysing the behaviour of the metal at different stages of the operation. However, their usefulness suffers as a result of a non-uniform deformation pattern over the sample as a whole and this is attributed to friction forces between the sample and the tool. Dilatometer tests were carried out between 1993 and 1996 to establish optimum simulated production conditions by varying the lubricant (glass and C-film), the geometry of the sample (X210Cr12) and the operating temperature in both single and two-stage operations. The best results were obtained from a sample in a cylindrical form of 10 mm length x 5 mm diameter using glass as a lubricant. This particular sample geometry offered several mechanical and economic advantages while use of the C-film could lead to diffusion of carbon into the sample and other consequent problems.

Additional information

Bibliographic Reference: EUR 18409 DE (1998) 126pp.
Availability: Available from OOPEC Sales agents
ISBN: ISBN 92-828-4554-0
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