Metallographic Characterization of Liquid Metal Embrittlement in a Failed Locomotive Axle
Metallography is an important component of failure analysis. In the case of a liquid metal embrittlement (LME) failure it is usually conclusive if a third phase constituent can be formed inside of the cracks after failure. In the case where it is necessary to characterize the third phase material, one can use various x-ray spectrographic techniques in conjunction with a scanning electron microscope (SEM). This study describes those metallographic and SEM analysis techniques for determining the mode of failure for a locomotive traction motor by LME.
B.M. Wilson, W.N. Weins, Metallographic Characterization of Liquid Metal Embrittlement in a Failed Locomotive Axle, ASM Failure Analysis Case Histories: Rail and Rolling Stock, ASM International, 2019, https://doi.org/10.31399/asm.fach.rail.c9001719
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