300 from K.Lu,The Future of Metals, Science,vol.328,2010,p.319 250- 200- Steels 150 100 Ni alloys Ti alloys Cu alloys Engineering 50- polymeric composites Al attoys Polymers Mo alloys Carbon fibers 0 Ceramics 0 100 200 300 400 1000 2000 Strength-to-weight ratio (MPa cm3 g-1) 材料科学与工程学院 9 School of Materials Science and Engineering材料科学与工程学院 School of Materials Science and Engineering from K. Lu, The Future of Metals, Science, vol.328, 2010, p.319 9