Non Ferrous alloys MSE 528. Mg alloys for automotive. Copper and its Alloys. Beta stabilizer. Ti alloy. Alpha stabilizers: C, O, N and Al Beta Stabilizers: Cr, Fe, Pd, Co, Mn, H, V, Mo, Ta, Nb Alpha alloys: Ti-5Al-2.5Sn, Ti-4al-1Mo Beta alloys: Beta 21S (13%Mo),
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• Particles impede dislocations.
• Ex: Al-Cu system
--Pt A: solution heat treat
(get a solid solution)
--Pt B: quench to room temp.
--Pt C: reheat to nucleate
small q crystals within
• Other precipitation
Adapted from Fig. 11.22, Callister 6e. (Fig. 11.22 adapted from J.L. Murray, International Metals Review30, p.5, 1985.)
Adapted from Fig. 11.20, Callister 6e.
• 2014 Al Alloy:
• TS peaks with
• Increasing T accelerates
• %EL reaches minimum
with precipitation time.
Adapted from Fig. 11.25 (a) and (b), Callister 6e. (Fig. 11.25 adapted from Metals Handbook: Properties and Selection: Nonferrous Alloys and Pure Metals, Vol. 2, 9th ed., H. Baker (Managing Ed.), American Society for Metals, 1979. p. 41.)
• Hard precipitates are difficult to shear.
Ex: Ceramics in metals (SiC in Iron or Aluminum).
• Internal wing structure on Boeing 767
Adapted from Fig. 11.0, Callister 5e.
(Fig. 11.0 is courtesy of G.H. Narayanan and A.G. Miller, Boeing Commercial Airplane Company.)
• Aluminum is strengthened with precipitates formed
Adapted from Fig. 11.24, Callister 6e.
(Fig. 11.24 is courtesy of G.H. Narayanan and A.G. Miller, Boeing Commercial Airplane Company.)