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The effect of vibration frequency on shear punch strength and wear resistance of AZ70 magnesium matrix composite manufactured by FSVP

Liu Shoufa, Li Chunfeng, Huang Pengfei, Paidar Moslem, Qiao Xun, Zhou Yanan, Wang Jinpeng, Zhao Song

Archives of Civil and Mechanical Engineering

2024

Vol. 24, no. 2

art. no. e58, 2024

A friction stir vibration processing (FSVP) with different vibration frequencies (20 Hz, 40 Hz, and 80 Hz) was employed for the fabrication of AZ70/ZrO2–CeO2 surface composite with the aim of improving mechanical and wear performance. Thus, the influence of vibration frequency as a vital parameter on the microstructure and reinforcement distribution, shear punch strength (SPT), and wear behavior of the composites was investigated. The results indicated that the material flow, agglomeration of particles, and dislocation density were influenced by the increasing vibration frequency that can be contributed to the successive mechanical stirring-assisted plastic deformation/strain and further grain refinement. It was also demonstrated that when vibration frequency was increased, the shear punch strength (by about 34%) and wear resistance (by about 44%) of the developed composites improved.

Recent trends on electro chemical machining process of metallic materials: a review

Liu Shoufa, Thangamani Geethapriyan, Thangaraj Muthuramalingam, Karmiris-Obratański Panagiotis

Archives of Civil and Mechanical Engineering

2023

Vol. 23, no. 3

art. no. e158, 2023

Many newer higher strength materials are being synthesized for variable automobile, aerospace and manufacturing applications in the present scenario. Since it is very difficult to cut such materials using conventional machining process, it is important to utilize unconventional machining process. In the present study, a detailed survey has been made to analyze the influence of various process parameters, effects of electrodes, optimization and electrolytes on performance measures in Electro chemical machining process. The effects of pulse related parameters on electrode materials, coating materials and its thickness on material removal, overcut and surface topography were investigated under different perspectives such materials, electrolyte and machining parameters. From the detailed literatures, it has been inferred that still lot of research works have been required to find the suitable electrolytes and their combination during the machining process. It has also been found that the performance measures of the machining process can be improved by adopting different and suitable optimization algorithms.