纳米结构钼铜复合材料的组织与失效特征
Microstructure and Failure Characteristics of Nanostructured Molybdenum Copper Composites
摘要：
液态金属渗透的Cu 30 Mo 70（重量百分比）使用高压扭转经受剧烈的塑性形变。最初的等轴双相组织逐渐转变为由单独的Cu和Mo层组成的层状组织。薄片的厚度在微米和纳米范围之间变化，这取决于施加的应变的量。与微观结构特征的细化一致，强度和硬度显著增加。此外，在中间变形范围内发现可接受的延展性。通过测量不同裂纹扩展方向的断裂韧性，对所生产的复合材料的损伤容限进行评估。结果表明，一个显着的各向异性的发展与变形程度的增加，这是一个效果的并发对齐的纳米结构的层状复合材料的剪切平面。
英文摘要：
Liquid-metal infiltrated Cu30Mo70 (weigth percentage) is subjected to severe plastic deformation using high pressure torsion. The initially equiaxed dual phase structure is gradually transformed into a lamellar structure composed of individual Cu and Mo layers. The thickness of the lamellae varies between the micrometer and nanometer ranges depending on the amount of applied strain. Consistent with the refinement of the microstructural features, strength and hardness substantially increase. In addition, an acceptable ductility is found in the intermediate deformation range. An assessment of the damage tolerance of the produced composites is performed by measuring the fracture toughness in different crack propagation directions. The results indicate the development of a pronounced anisotropy with increasing degree of deformation which is an effect of the concurrent alignment of the nanostructured lamellar composite into the shear plane.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
