1. Department of Materials Science and Engineering, Penn State University, N-326 Millennium Science Complex, University Park, Pennsylvania 16802, USA
2. Department of Mechanical and Nuclear Engineering, Penn State University, 157B Hammond Building, University Park, Pennsylvania 16802, USA
3. Department of Engineering Science and Mechanics, Penn State University, N-329 Millennium Science Complex, University Park, Pennsylvania 16802, USA
4. Materials Research Institute, Penn State University, N-151 Millennium Science Complex, University Park, Pennsylvania 16802, USA