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[3] [4] In March 2007, Haynes became a public company via an initial public offering. [5] [6] The Space Shuttle program, which ended in 2011, used total of 47 parts made from Haynes 188 alloy and 7 from Haynes' Hastelloy B alloy in its engines. Hastelloy C-22 alloy was used for the fuel line bellows that assisted in achieving takeoff. [3]
The next family of Co-based superalloys was discovered in 2015 by Makineni et al. This family has a similar γ/γ' microstructure, but is W-free and has a γ' phase of Co 3 (Al,Mo,Nb). [16] Since W is heavy, its elimination makes Co-based alloys increasingly viable in turbines for aircraft, where low density is especially valued.
3 Electrical potential. 4 Workpiece In wire electrical discharge machining (WEDM), also known as wire-cut EDM and wire cutting , [ 30 ] a thin single-strand metal wire, usually brass , is fed through the workpiece, submerged in a tank of dielectric fluid, typically deionized water. [ 28 ]