Transcription of CHAPTER 11: METAL ALLOYS APPLICATIONS AND PROCESSING
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CHAPTER 11: METAL ALLOYS APPLICATIONS AND PROCESSING
ISSUES TO How are METAL ALLOYS classified and how are they used? What are some of the common fabrication techniques? How do properties vary throughout a piece of material that has been quenched, for example? How can properties be modified by post heat treatment? CHAPTER 11: METAL ALLOYS APPLICATIONS AND PROCESSING Classifications of METAL ALLOYS Fe 3 C cementite METAL ALLOYS Steels Ferrous Nonferrous Cast Irons Cu Al Mg Ti < wt%C 1600 1400 1200 1000 800 6 00 4 00 0 1 2 3 4 5 6 L g austenite g +L g +Fe 3 C a ferrite a +Fe 3 C L+Fe 3 C d (Fe) Carbon concentration, C Eutectic Eutectoid 727 C 1148 C T( C) Steels < Cast Irons tic Ferrous ALLOYS .
High Alloy Low carbon <0.25wt%C Medium-carbon 0.25-0.6wt%C High carbon 0.6-1.4wt%C Applications: auto struc. sheet bridges towers press. vessels crank shafts bolts hammers blades pistons gears wear applications wear applications applications drills saws dies high T turbines furnaces corrosion resistant
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