Investigation on Induced Compressive Residual Stress Using the Depth-Sensing Indention Method of SSMT-Processed ETP Copper

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Strength of Materials Pub Date : 2024-05-08 DOI:10.1007/s11223-024-00638-4
Y. Brucely, M. Abeens
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Abstract

This research aims to investigate approximate process parameters in severe surface mechanical treatments, which play a main role in producing good surface quality, inducing residual stress, and less damage to material during surface treatment of materials. The Taguchi orthogonal array and ANOVA are utilized to find the impact of process parameters and their significant contribution. It is observed that shot diameter and speed of revolution of the shaft have a significant effect on surface hardness. The optimum condition, i.e., an 8 mm shot diameter, a 750 rpm speed of revolution, and a 45 min treatment duration, contribute a higher surface hardness of 124 HV confirmed with the predicted value, and the obtained surface hardness is 35% higher than the untreated specimen. Compressive residual stress is calculated using the depth-sensing indention method, which is about 126 MPa for the optimum condition of hardness. The depth of the deformed layer is around 350 μm from the top surface towards the metal core. The nanohardness is improved from 1.311 to 1.464 GPa for the optimum condition which is 10% higher than the unpeened specimen.

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使用深度感应压痕法研究 SSMT 加工 ETP 铜的诱导压缩残余应力
本研究旨在探讨严酷表面机械处理过程中的近似工艺参数,这些参数在材料表面处理过程中对产生良好的表面质量、产生残余应力和减少对材料的损坏起着主要作用。利用田口正交阵列和方差分析找出工艺参数的影响及其显著贡献。结果表明,喷丸直径和轴的旋转速度对表面硬度有显著影响。最佳条件,即 8 毫米的喷丸直径、750 转/分钟的旋转速度和 45 分钟的处理持续时间,可获得 124 HV 的较高表面硬度,这与预测值一致,获得的表面硬度比未处理的试样高 35%。采用深度感应压痕法计算出的压缩残余应力在最佳硬度条件下约为 126 兆帕。变形层的深度约为 350 μm,从顶面向金属芯方向延伸。在最佳条件下,纳米硬度从 1.311 GPa 提高到了 1.464 GPa,比未强化试样高出 10%。
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来源期刊
Strength of Materials
Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-
CiteScore
1.20
自引率
14.30%
发文量
89
审稿时长
6-12 weeks
期刊介绍: Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.
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