Interpretation of hot plane strain compression testing of aluminium specimens

摘要

Plane strain compression (PSC) testing is nowgenerally accepted as one of the most reliable methods for thegeneration of flow stress data and microstructural investigationof thermomechanical processing. It has been known for sometime that extremely reproducible measurements may be madeacross different laboratories if a standardised procedure is used.However, particular care must be taken with both theexperimental procedure and the interpretation of the measuredforce-displacement data. The present paper reports investigationsthat have built on previous work and looked further at the effectsof spread of the specimen and friction . In deriving reliable flowstress data, the importance of tool and specimen geometry andconsideration of the effects of lubrication and friction are clearlydemonstrated . Furthermore, the paper demonstrates the currentstatus of the work by presenting the algorithms behind newsoftware that has been developed for interpretation of raw force-displacement data in a logical and consistent way.