Use this URL to cite or link to this record in EThOS:
Title: The hot forging of copper-10% nickel powder compacts
Author: Williams, G. J.
Awarding Body: University College of Swansea
Current Institution: Swansea University
Date of Award: 1982
Availability of Full Text:
Access from EThOS:
A research programme was set up to investigate the effects of a number of process variables on the structure and selected properties of a hot forged alloy of copper - 10% nickel powder compacts and to examine the processes occuring during the hot forging operation. X-ray analysis was also performed on a range of compacts to study any variations in homogeneity resulting from the use of different powders and process variables. The variables selected for the investigation were those of forging temperature, initial powder particle size and initial powder particle size ratio. A systematic tabular method was employed in the analysis of the results to identify those variables and interactions of variables which had the most significant effect on the properties of the final forgings. It was observed that the most significant factor involved in the operation was that of forging temperature, however serious consideration must also be given to the initial particle size. In some cases the effect of the latter variable was seen to be reversed by using different powders. The X-ray analysis proved that the homogeneity of the forgings made from both types of powder was almost identical. The differencess in mechanical properties were considered as being due to the variation in preforging homogeneity between the compacts giving varying degrees of recrystallisation. Explanations are offered for the observations made. The metallographic examination served to confirin the observations made from the results of mechanical testing and X-ray analyses.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available