Why is it that cross slip in BCC and FCC metals is easier than that in HCP metals How does this influence the ductility of BCC FCC and HCP metals? BCC metals are less ductile but stronger, eg iron, while HCP metals are usually brittle. For example, FCC metals, Cu, Au, Ag, are usually soft and ‘ductile’, which means they can be bent and shaped easily. The different cells leads to different physical properties of bulk metals. How HCP BCC and FCC metals have different ductility? This means that, the %empty space in a plane is higher in BCC.įCC – has 12 slip systems (three family of planes and four family of directions, giving 3×4 =12 slip systems, which is more than 5 independent slip systems therefore FCC is ductile. Because the slip planes in the FCC structure are of the closest packing. Why are FCC metals more ductile than BCC?Įven though both FCC and BCC have equal number of slip systems present in the structure, FCC is more ductile. 8 Which is more ductile, HCP or fcc lattice?.6 Why does iron change from BCC to FCC?.2 How HCP BCC and FCC metals have different ductility?.1 Why are FCC metals more ductile than BCC?.
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