Image Analysis Software for Porosity Measurements in Some Powder Metallurgy Alloys

Abstract:

The present research was aimed to study the porosity in some powder metallurgy (P/M) alloys using an image analysis software. The porosity in P/M parts is an important parameter because is affecting the mechanical properties. Also, porosity is in correlation with processing parameters such as green density, alloying elements, particle size. The conventional method for porosity measurements of powder metallurgy products is using the density technique. Another method for porosity measurements was using an image processing software and by applying filters and adjustments the detection of the pores (black areas) was done. Two types of powders obtained by water amotization were subjected to analyze. To obtain the green compacts, the powders were pressed at 600 MPa using a single die action. The green compacts were sintered in a laboratory furnace at 1150o C for 30 and 120 minutes. A metallographic analysis was performed for porosity measurements. The pore’s shape and porosity fraction were measured using both conventional and image analysis techniques. The porosity measurements for sitnered specimens obtained from image analysis was slightly higher than that from density technique.

• Periodical: Advanced Materials Research (Volume 1143)
• Pages: 103-107
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1143.103
• Online since: February 2017
• Authors: Mihaela Marin*, Florentina Potecaşu, Octavian Potecaşu, Florin Bogdan Marin
• Keywords: Image Analysis, Porosity, Powder metallurgy, Software

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