Metallography, Microstructure, and Analysis (2018) 7:374–375 https://doi.org/10.1007/s13632-018-0453-2(0123456789().,-volV)(0123456789().,-volV) MYSTERY MICRO Springer Science+Business Media, LLC, part of Springer Nature and ASM International 2018 Describe the microstructure accurately and win an Send your clear, brief description by e-mail to the MMA invitation to submit your own ‘Mystery Micrograph.’ editor at email@example.com. Entries should This two-part material is often used in cutting applica- be titled: ‘‘MMA Mystery Micro 7(3).’’ tions, where high hardness and abrasion resistance are Above micrograph submitted by George K. Abraham IV, required. Manager of Technical Services, Allied High Tech Products, The winner’s name and answer will appear in an Inc., Rancho Dominguez, Calif. upcoming issue. Exceptional micrographs from winner submittals may be used on the journal cover. 123 Metallography, Microstructure, and Analysis (2018) 7:374–375 375 Answer for Volume 7, Issue 1 Mystery Micrograph The material is a modiﬁed M10 high-speed tool steel. The two microstructures show a basic dendritic structure for the cast alloy. The most prominent feature is the for- mation of a complex carbide eutectic phase between the dendrite arms. Principal alloy element of the ‘‘M’’-Series of tool steels is molybdenum (Mo), and for this material it is at about 8%. Chromium (Cr) and vanadium (V) are
Metallography, Microstructure, and Analysis – Springer Journals
Published: May 10, 2018
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