Crystallization-resistant water-jet guided laser processing of Cu46Zr46Al8 amorphous alloy via thermally suppressed strategy

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-04-09 DOI:10.1016/j.intermet.2025.108789

Hengming Hu , Caiyun Liu , Zihuai Su , Feng Ye , Bin Qian , Ye Dai , Shengzhi Sun , Binbin Liu , Jianrong Qiu

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引用次数: 0

Abstract

The unique atomic packing of amorphous alloys leads to excellent properties, but the metastable amorphous nature becomes an obstacle of the processing. This study introduces Water-Jet Guided Laser (WJGL) technology to process the Cu₄₆Zr₄₆Al₈ amorphous alloy with improved surface morphology and minimal heat-affected zone. A noticeable heat-affected zone with thickness larger than 2 mm was observed in sample processed by conventional laser, while that of WJGL processing was less than 15 μm. The processing parameters of WJGL have no significant effect on the phases of the processed surface, only m-ZrO₂, t-ZrO₂, and Cu were determined. The processing surface morphology shows a strong dependence on the water pressure. Wave-like morphology formed in the processing surfaces under a water pressure of 30 MPa, which was invisible as the water pressure decreased to 10 MPa. Smaller water pressure together with lower laser power are beneficial to the surface quality, the minimum surface roughness of 0.8411 μm was obtained at the water pressure of 10 MPa and the laser power of 8 W. Finally, complex-shaped components were processed using WJGL, indicating that WJGL is a viable and effective alternative for machining amorphous alloys.

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热抑制策略下抗结晶水射流激光加工Cu46Zr46Al8非晶合金

非晶合金独特的原子填充特性使其具有优异的性能，但其亚稳态的非晶特性成为其加工的一大障碍。采用水射流制导激光（WJGL）技术加工Cu46Zr46Al8非晶合金，改善了表面形貌，减小了热影响区。常规激光加工的样品存在明显的热影响区，热影响区厚度大于2 mm，而WJGL加工的热影响区厚度小于15 μm。WJGL的加工参数对加工表面的相无显著影响，仅影响m-ZrO2、t-ZrO2和Cu。加工表面形貌对水压有很强的依赖性。在水压为30 MPa时，加工表面形成波浪状形貌，当水压降至10 MPa时，这种形貌不可见。较小的水压和较低的激光功率有利于提高表面质量，在水压为10 MPa、激光功率为8 W时，获得的表面粗糙度最小为0.8411 μm。最后，利用WJGL加工了复杂形状的零件，表明WJGL是加工非晶合金的一种可行和有效的替代方法。

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来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.