讲座名称：

周惠久论坛——Deformation and Failure of Advanced Structural Materials

讲座时间

2026年10月30日  下午1:00

讲座地点

科创大厦9F报告厅

讲座人

Bernd Gludovatz 教授

讲座内容

摘要：Damage tolerant materials with good combinations of strength and toughness are critical for increasingly complex structural applications and remain a long-standing goal in materials science and engineering. Unfortunately, these properties are often mutually exclusive, and the development of damage-tolerant alloys has traditionally required a compromise between hardness and ductility. Additive manufacturing (AM), however, offers new opportunities to tailor micro- and mesostructures beyond the limits of conventional processing routes, enabling enhanced mechanical performance. At the same time, the complex thermal histories inherent to AM can generate metastable microstructures and anisotropic deformation and failure characteristics that complicate the relationship between ductility and fracture toughness. In the first part of this talk, we evaluate the correlation between fracture toughness and ductility in Al-, Fe-, and Ti-based AM alloys and highlight how their unique structural features can lead to pronounced variability in fracture toughness for materials with otherwise similar ductility. Using examples such as LPBF-fabricated AlSi10Mg and 18Ni-300 maraging steel, we demonstrate how printing parameters and post-processing influence deformation behavior and mechanical performance, and how mixed powders can create mesostructures that enable excellent damage tolerance in duplex stainless steel without post-processing heat treatment. In the second part of the talk, we focus on bulk metallic glasses (BMGs), a relatively new class of materials with tremendous potential for structural applications due to their exceptional combinations of high strength, low stiffness, and large elastic strain limits. Major drawbacks for their engineering use, however, are their highly variable fracture toughness and ductility, which can differ significantly depending on loading conditions. We will discuss how structural modifications introduced through high-pressure torsion and precise heat treatments affect strength, tensile plasticity, and failure behavior in BMGs. Finally, we will examine how AM may provide new pathways to overcome some of the processing limitations associated with BMGs, thereby paving the way for their broader use in engineering applications.

主办单位：

材料学院

金属材料强度全国重点实验室 

讲座人介绍

Bernd Gludovatz is a Professor in the School of Mechanical and Manufacturing Engineering at UNSW Sydney. 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. After that, he worked as a post-doctoral fellow of Prof. Robert O. Ritchie at the Materials Sciences Division of the Lawrence Berkeley National Laboratory in the US.

Bernd Gludovatz has over 100 publications and H-index is 54 (Google Scholar). His research interests are in the mechanical behavior of structural materials, particularly the mechanisms underlying deformation, fracture and fatigue of advanced metallic alloys, nature-inspired composites and biological materials. Additionally he is interested in the analysis of components that fail in service.

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