1. Steel is the material that has been chosen for a small link in the fuel...

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Mechanical Engineering

1. Steel is the material that has been chosen for a small linkin the fuel injection mechanism in a space vehicle. Whichsteelmaking process would probably be used to manufacture the steelfor this application?
2. You are involved in the design and construction of anew-steel -making factory. Which steel-making process would youincorporate into this new plant? How would the geographic locationof the plant affect the selection of the process?

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1 Maraging steel is most commonly used in aircraft rockets and other space vehicles now let discuss the steel making process of this material Commercial maraging steels are carbonfree ironnickel alloys with minor doping additions of cobalt molybdenum titanium and aluminum The word maraging steel derives from the underlying strengthening mechanisms namely a transformation of the facecentered cubic hightemperature austenite phase of such alloys into cubic martensite combined with b the subsequent age hardening of this asquenched material hence martensileaging Air cooling the austenite to room temperature from about 820C creates a soft ironnickel cubic martensite which contains molybdenum aluminum titanium and cobalt in supersaturated solid solution Tempering this relatively soft martensite at 480 to 500C results in strong agehardening due to the nanoprecipitation of a high number density of intermetallic phases including nickelmolybdenum ironmolybdenum and ironnickel phases typically with near B2 and DO3 structures yet with often nonstoichiometric sublattice occupation The standard commercial grades with 18wt nickel and additions of cobalt and molybdenum were developed as early as around 1950 The standard commercial grades with 18wt nickel and additions of cobalt and molybdenum were developed as early as around 1950 The first maraging steels introduced at See Answer

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