具有潜在自愈能力的软铁磁块体金属玻璃。

Soft Ferromagnetic Bulk Metallic Glass with Potential Self-Healing Ability.

作者信息

Ramasamy Parthiban, Stoica Mihai, Ababei Gabriel, Lupu Nicoleta, Eckert Jürgen

机构信息

Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, Leoben A-8700, Austria.

Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland.

出版信息

Materials (Basel). 2020 Mar 14;13(6):1319. doi: 10.3390/ma13061319.

DOI:10.3390/ma13061319

PMID:32183279

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7143147/

Abstract

A new concept of soft ferromagnetic bulk metallic glass (BMG) with self-healing ability is proposed. The specific FeCoBSiNb (x = 0, 0.5, 1 and1.5) BMGs prepared by copper mold casting were investigated as a function of Ga content. The Ga-containing BMGs still hold soft magnetic properties and exhibit large plastic strain of 1.53% in compression. Local melting during shearing produces molten droplets of several µm size throughout the fracture surface. This concept of local melting during shearing can be utilized to produce BMGs with self-healing ability. The molten regions play a vital role in deflecting shear transformation zones, thereby enhancing the mechanical properties.

摘要

提出了一种具有自愈合能力的软铁磁体块状金属玻璃（BMG）的新概念。研究了通过铜模铸造制备的特定FeCoBSiNb（x = 0、0.5、1和1.5）BMG作为Ga含量的函数。含Ga的BMG仍保持软磁性能，并且在压缩时表现出1.53%的大塑性应变。剪切过程中的局部熔化在整个断裂表面产生了几微米大小的熔滴。这种剪切过程中局部熔化的概念可用于生产具有自愈合能力的BMG。熔化区域在使剪切转变区发生偏转方面起着至关重要的作用，从而提高了机械性能。