Work

Material removal mechanisms and transition effects in electric arc mechanical combination machining of GH4169 nickel-based alloy

Year: 2025

Type: article

Abstract: Electric arc machining (EAM) is an effective means of efficiently manufacturing GH4169 nickel-based alloy aerospace components. However, thermal defects lead to significant degradation of surface quality and accuracy. Therefore, this paper proposes a combined process of EAM and mechanical machining to realize efficient and high-quality machining of GH4169 nickel-based alloy. Firstly, the significance of parameters affecting EAM machining efficiency and surface quality is verified through orthogonal experiments, and the optimal parameter combinations for individual indicators are determined. The influence mechanism of mechanical tools to remove thermal defects of EAM was investigated under the expectation of maximum material removal rate (MRR). The results show that the tool cut into the maximum recast layer thickness can be based on the complete removal of the recast layer without leading to significant elemental migration and grain changes. At the same time, it does not trigger a drastic increase in the feed resistance and back force of the tool. This highlights the application potential of the combined EAM and mechanical process for efficient and high-quality machining of GH4169 nickel-based alloy.

Source: Journal of Materials Research and Technology

DOI: 10.1016/j.jmrt.2025.09.280

Authors: Zongjie Zhou, Menglei Wang, Shengsheng Zhang, Yingxin Liu, Jianping Zhou

Institutions: Xinjiang University, Chinese Academy of Sciences, Ningbo Institute of Industrial Technology

Language: English

Topic: Advanced Machining and Optimization Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,640

Funders: China Postdoctoral Science Foundation, Xinjiang Tianchi Doctoral Project