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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Microstructure and room-temperature mechanical properties of crystalline and amorphous FeAl based melt spun ribbons
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Microstructure and room-temperature mechanical properties of crystalline and amorphous FeAl based melt spun ribbons

机译：结晶和无定形FEAL基熔纺带的微观结构和室温力学性能

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摘要

The microstructure and mechanical properties of crystalline Fe81%-A119% and amorphous Fe72%-A114%-B14% ribbons obtained by the melt spinning technique are studied. A different grain size in each surface of the crystalline ribbon has been found. This is caused by the temperature gradient originated by the manufacturing process. The micro-hardness and the Young's modulus were evaluated by instrumented micro-indentation (P-h curves) and conventional tensile test. The results show different Vicker's hardness on each surface for each of the ribbons, being these values greater in the amorphous ribbon than in the crystalline one. The values of the Young's modulus are 133 +/- 11 GPa and 210 +/- 20 GPa for the crystalline and amorphous ribbon respectively which are in good agreement with the theoretical values obtained by the mix rule. The surface fracture shows a brittle-like aspect with presence of cleavage in the Fe81%-A119% ribbon and small localized ductile behavior before reaching the fracture. In the other hand, in the Fe72%-A114%-1314% ribbon, the surface fracture characteristics reveal a fragile fracture and the presence of chevron marks. There is a concordance between the mechanical behavior and the micro-mechanism responsible for the fracture.
机译：研究了通过熔融纺丝技术获得的结晶Fe81％-A119％和无定形Fe72％-A114％-B14％丝带的微观结构和机械性能。已经发现了结晶带的每个表面中的不同粒度尺寸。这是由制造过程起源的温度梯度引起的。通过仪表化的微压痕（P-H曲线）和常规拉伸试验评估微硬度和杨氏模量。结果在每个色带上显示每个表面的不同的维氏硬度，在非晶带中的这些值比在结晶中更大。杨氏模量的值是133±11 GPA和210 +/- 20 GPA为晶态和非晶态分别色带，它们与由混合规则得到的理论值吻合。表面骨折显示出脆性样方面，在达到骨折之前，Fe81％-A119％带中存在切割和小局部延性行为。另一方面，在Fe72％-1114％-1314％的色带中，表面骨折特性揭示了脆性骨折和雪佛龙的存在。机械行为和负责裂缝负责的微机制之间存在一致性。

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