Laser coating of a Zr-based metallic glass on an aluminum substrate

SURFACE & COATINGS TECHNOLOGY

卷:400

Article

Sohrabi, Navid¹  Panikar, Ramanandan Santhanu¹  Jhabvala, Jamasp¹  Buch, Alejandro Roda²  Mischler, Stefano²  Loge, Roland E.¹ 

[1] Ecole Polytech Fed Lausanne EPFL, Thermomech Met Lab, PX Grp Chair, CH-2002 Neuchatel, Switzerland

[2] Ecole Polytech Fed Lausanne EPFL, Tribol & Interface Chem Grp, CH-1015 Lausanne, Switzerland

关键词: Additive manufacturing;    Metallic glasses;    Crystallization;    Laser processing;    Aluminum alloy;    Cladding;   

DOI  :  10.1016/j.surfcoat.2020.126223

来源: Elsevier

【 摘 要 】

Cladding of a Zr-based metallic glass (MG) on an aluminum substrate was conducted using a layer-wise laser additive manufacturing (AM) method, leading to relative densities higher than 99%. The thickness of the cladding was about 300 mu m. The effect of laser power on the bonding with the substrate was investigated. Laser parameters changed from the interface to the bulk of the cladding, such as to obtain both a highly amorphous coating, and excellent bonding with the substrate. The coating microstructures and properties were analyzed in terms of crystallized fraction and micro-hardness. The wear resistance of the cladding was 20 times better than that of the substrate.

【 授权许可】

Free