Development of tough, low-density titanium-based bulk metallic glass matrix composites with tensile ductility
Development of tough, low-density titanium-based bulk metallic glass matrix composites with tensile ductility
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DOI：
10.1073/pnas.0809000106
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发表时间：
2008-12-23
影响因子：
11.1
通讯作者：
Johnson, William L.
中科院分区：
文献类型：
--
作者：
Hofmann, Douglas C.;Suh, Jin-Yoo;Johnson, William L.
块体金属玻璃(BMG)及其复合材料由于具有高强度和弹性极限的独特组合，其力学性能多年来一直受到广泛的研究。然而，由于其高度局部化的变形机制，BMG通常被认为是脆性材料，不适合结构应用。近年来，在高性能晶态合金力学性能相当的情况下，高韧性的BMG复合材料已经在Zr-Ti系中被制造出来。在这项工作中，我们提出了一系列低密度的钛基BMG复合材料，结合了高强度、拉伸塑性和优异的断裂韧性。
The mechanical properties of bulk metallic glasses (BMGs) and their composites have been under intense investigation for many years, owing to their unique combination of high strength and elastic limit. However, because of their highly localized deformation mechanism, BMGs are typically considered to be brittle materials and are not suitable for structural applications. Recently, highly-toughened BMG composites have been created in a Zr-Ti-based system with mechanical properties comparable with high-performance crystalline alloys. In this work, we present a series of low-density, Ti-based BMG composites with combinations of high strength, tensile ductility, and excellent fracture toughness.