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屏蔽气体在量身定制微观结构和丝弧增材制造Inconel 686中的异构性中的作用

S Ajithkumar¹, B Arulmurugan², M Manikandan³

¹Department of Mechanical Engineering, KPR Institute of Engineering and Technology, Coimbatore, Tamilnadu, 641407, India.

Scientific reports

|July 2, 2025

概括

在Inconel 686的电弧增材制造 (WAAM) 过程中使用纯屏蔽气显著提高了机械性能,并改进了微观结构. 与或混合物相比,这种方法的结果是优越的强度和降低的异构性.

科学领域:

材料科学材料科学材料科学
制造业工程制造工程

背景情况:

电弧增材制造 (WAAM) 是制造金属元件的关键技术.
英康尼尔686是一种高性能超级合金,用于苛刻的应用.
屏蔽气体的组成对于控制WAAM过程结果至关重要.

研究的目的:

为了研究屏蔽气体成分对Inconel 686 WAAM的影响.
为了将微观结构特征与机械性能相关联.
为了优化WAAM参数以提高组件性能.

主要方法:

使用WAAM制造薄壁Inconel 686结构.
使用纯 (Ar),+50% (He) 和纯 (He) 作为屏蔽气体.
通过X射线衍射 (XRD),能量分散X射线光谱 (EDS) 和微硬度测试进行表征.

主要成果:

纯屏蔽导致了最高的冷却速率和最精细的微观结构 (细胞和等).
纯导致了最小的结晶体尺寸 (24.4 nm) 和最高的脱位密度 (16.8 × 10−4 nm−2).
用纯将富含Mo的分离量降到最低,改善机械性能,包括更高的拉伸强度和产量强度,并降低异构性.

结论:

屏蔽气体的组成对Inconel 686 WAAM的微观结构和性能产生了重大影响.
纯屏蔽气为Inconel 686 WAAM提供了显著的优势.
为WAAM优化屏蔽气体可以带来优越的材料性能和降低异构性.

关键词:

没有异性otropy.在Inconel 686 中使用.机械性质机械性质微观结构的微观结构屏蔽气体是一种保护气体.电线弧增材制造电线弧增材制造

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