ALLOY 718: PART I QUINTESSENTIAL AERO-ENGINE SUPERALLOY John deBarbadillo, FASM* Barboursville, West Virginia This first installment in a three-part series introduces the initial discovery and early impact of alloy 718 on aerospace engines. The SR-71 Blackbird spy plane at the Smithsonian National Air and Space Museum Annex. Courtesy of Dreamstime.com. *Member of ASM International AEROSPACE MATERIALS 15
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