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 : iron is the prime constituent Ferrous ALLOYS are relatively inexpensive and extremely
ferrite a +Fe 3 C L+Fe 3 C d (Fe) Carbon concentration, wt.% C Eutectic Eutectoid 0.77 4.30 727°C 1148°C T(°C) Steels <1.4wt%C Cast Irons 3-4.5 tic • Ferrous alloys: iron is the prime constituent • Ferrous alloys are relatively inexpensive and extremely versatile • Thus these alloys are wide spread engineering materials
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