Mechanical Testing of PM Parts using Sub-Size Specimens
Mechanical properties testing of PM parts is complicated due to a number of factors, such as the relatively small size of most parts as well as variable density with location on a part. Typically tensile testing requires molding test specimens which have similar material compositions, but different densities and pore distributions. Hence current methods of testing often do not represent actual properties of PM parts. Smaller sub-size tensile specimens have been developed to look into local tensile properties in friction stir welds and laser deposited materials. This paper looks at the usability of specimens of this size for the measurement and validation of PM parts. PM parts with variations in density from location to location have been used to examine the accuracy and repeatability of sub-size specimens for application in the study and validation of PM material components.
J. W. Newkirk and J. Wang, "Mechanical Testing of PM Parts using Sub-Size Specimens," Proceedings of the 2014 World Congress on Advances in Powder Metallurgy &Particulate Materials (2014, Orlando, FL), pp. 1116-1122, Metal Powder Industries Federation, May 2014.
2014 World Congress on Powder Metallurgy & Particulate Materials (2014: May 18-22, Orlando, FL)
Materials Science and Engineering
Keywords and Phrases
Density (Specific Gravity); Friction Stir Welding; Location; Mechanical Testing; Metallurgy; Tensile Testing; Accuracy and Repeatabilities; Deposited Materials; Different Densities; Material Components; Mechanical Properties Testing; Number of Factors; Pore Distribution; Tensile Specimens; Powder Metallurgy
International Standard Book Number (ISBN)
Article - Conference proceedings
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01 May 2014