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					Characterization of Metallic Glasses
Faculty: Ghatu Subhash
Students: Hao Li and Hongwen Zhang
• Background
                                                                          Place
   Metallic glasses (amorphous metals) have high
    strength similar to ceramics and ductility similar
    to metals. They are increasingly used in                      Background
    recreational and military applications
   Understanding their mechanical behavior is vital
                                                                         Figure
    to better utilization of these materials
   Xxxxx
                                                                           Here
• Research Objective
   To determine static and dynamic behavior using hopkinson pressure bar
    and nanoindentation
   Identify the influence of compositional variations on mechanical behavior
   Development of constitutive models for deformation and fracture
   Identify the mechanism for shearband formation


                             Center for Manufacturing and Design with Lightweight Materials
                                                                   Michigan Technological University   1
ShortProjectTitle
                           2500

                                                                                                          Quasi-static     Dynamic
                                                                                                                                     • Determination of Compressive Strength
                           2000
                                                                                                                                         The compressive strength under dynamic
                                                                                                                                          loading is lower than that under quasi-static
 Failture Strength (MPa)




                           1500


                                                                                                                                          loading.
                                                                                                                                         Substitution of Hf for Zr increases
                           1000




                           500
                                      Place Figure Here                                                                                   compressive strength for both dynamic and
                             0
                                                                                                                                          quasi-static compression.
                                  0         0.2      0.4        0.6        0.8         1.0              0.6              1.0

                                                    Zr+Hf=52.5                                            Zr+Hf=57
                                                                            Zr/Zr+Hf
                                      Fracture strength of metallic glasses under quasi-static and dynamic compression




                                                                                                                                     • Result 2
                                                                                                                                         Xxxxx
                                                                                                                                         Xxxxx
                                                                                                                                         Xxxxx
                                      Place Figure Here




                                                                                                                    Center for Manufacturing and Design with Lightweight Materials
                                                                                                                                                               Michigan Technological University   2

				
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