Abstract
The creep behaviour of Cu-Zn-Al alloy was investigated using hot impression creep test. The test was performed on Cu-Zn-Al alloy cylindrical samples of 10 mm height and 15 mm diameter whose chemical composition was determined by X-ray Fluorescence (XRF) and Energy Dispersive Spectroscopy (EDS) Analysis. The creep tests were carried out for a dwell time of 3 h at three different loads 2 kg, 2.5 kg, 3 kg and at three different temperatures 250 °C, 300 °C and 350 °C for each load. The effect of load and test temperature on the creep behaviour was studied and it was observed that with increase in both temperature and load, the indentation depth as well as the creep rate increased. The punch velocity decreased with time in each case but increased with load and test temperature. Scanning Electron Microscopy (SEM) analysis around the indentation region after the creep revealed the presence of deformation bands and EDS Analysis indicated an increase in oxygen content of the alloy with test temperature.
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