Materials Science Division
Lawrence Berkeley National Laboratory
Fracture and Fatigue of Advanced Metallic Alloys
Location: EB1 Room 1011
Friday, January 8th 2016 - 11:00 am
Damage tolerant materials with a good combination of toughness and strength are a long sought after goal for both mechanical engineers and materials scientists. Unfortunately, these properties are generally mutually exclusive and the development of new alloys with damage tolerant design has traditionally been a compromise between hardness and ductility. This talk will focus on recently developed advanced metallic alloys that show a good combination of both strength and toughness, bulk-metallic glasses (BMGs) and high-entropy alloys (HEAs). Strength levels often well above 2 GPa, fracture toughness values up to 200 MPa.m1/2, and fatigue limits up to 25% of the ultimate tensile strength make BMGs promising candi-dates for many structural applications. High-entropy alloys, on the other end, have strengths above 1 GPa and fracture toughness values well above 200 MPa.m1/2. Interestingly, their properties can improve with decreasing temperatures - a trend that is the opposite for most other materials.
Bio: Bernd Gludovatz is currently a post-doctoral fellow of Prof. Robert O. Ritchie at the Materials Sciences Division of the Lawrence Berkeley National Laboratory. He received his M.S. and his Ph.D. as a student of Prof. Reinhard Pippan at the University of Leoben, Austria, both in Materials Science and Engineering. His research interests are in the mechanical behavior of structural materials, particularly fracture and fatigue of advanced metallic alloys, nature-inspired ceramic composites and biomaterials.