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Low-Temperature Deformation of Al–Ni–Fe–La System Amorphous Alloys
Inorganic Materials: Applied Research Pub Date : 2021-04-20 , DOI: 10.1134/s2075113321020076
N. D. Bakhteeva , E. V. Todorova , D. V. Prosvirnin , N. V. Petrakova , T. R. Chueva , E. O. Nasakina

Abstract

X-ray amorphous ribbons of aluminum-based alloys doped with transition (Ni, Fe) and rare earth (La) metals in various ratios were obtained by melt spinning. The mechanical characteristics and fracture surfaces of the ribbons under conditions of uniaxial tension with speeds from 0.01 to 10 mm/min were studied. It was shown that, with an increase in the rate in all investigated alloys, the strength limit increases and low plasticity remains. Inhomogeneous deformation is realized by the initiation and spread of shear bands. The mixed fracture surface indicates a brittle-viscous fracture with a high ratio of the viscous component. A significant influence of the scale factor on the strength characteristics of the ribbons was confirmed. The tensile strength of the ribbons increases with rising iron content and decreasing nickel content when the influence of the scale factor is excluded. It is experimentally shown on ribbons with a low-melting tin coating that local heating in shear bands reaches the melting point of tin of 231.9°C.



中文翻译:

Al-Ni-Fe-La系非晶态合金的低温变形

摘要

通过熔融纺丝获得以各种比例掺杂有过渡金属(Ni,Fe)和稀土金属(La)的铝基合金的X射线非晶带。研究了在单轴拉伸条件下,速度为0.01到10 mm / min时,带材的机械特性和断裂表面。结果表明,随着所有研究合金的添加率的增加,强度极限值增加,并且可塑性仍然较低。不均匀变形是通过剪切带的产生和扩展来实现的。混合的断裂表面表明具有高比例的粘性组分的脆性-粘性断裂。证实了比例因子对带的强度特性的显着影响。当排除比例因子的影响时,带材的抗拉强度随着铁含量的增加和镍含量的降低而增加。实验表明,在具有低熔点锡涂层的碳带上,剪切带中的局部加热达到231.9°C的锡熔点。

更新日期:2021-04-20
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