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Effect of Non-metallic Inclusions on Bending Fatigue Performance in High Strength 4140 Steel

17FTM18

This paper studies the fatigue performance of three sets of quench and tempered 4140 steel samples, representing three distinctly different inclusion populations. The inclusion populations for each of the sample sets were characterized using both an SEM-based image analysis system, primarily for the micro-inclusions, and a high-resolution UT system for the macro-inclusions. The sample sets were also evaluated using both longitudinal and transverse specimens in all the bending fatigue tests. The results of these tests will be presented.
ISBN: 1-55589-759-8
Pages: 23
Authors: Michael Burnett
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