What is it about?
It deals with surface integrity studies on AZ91 magnesium alloy during milling under dry and cryogenic conditions using uncoated carbide inserts. Experiments have been conducted at different cutting speeds, feeds and depths of cut. Surface integrity characteristics including surface roughness, microhardness, microstructure and residual stresses. Multi criteria Decision Making Techniques have been used to identify optimal conditions for milling in dry and cryogenic conditions. Cryogenic machining reduced roughness and increased hardness. Cutting speed has a significant influence on both roughness and hardness. Cryogenic machining has resulted in compressive residual stresses.
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Why is it important?
This work extensively compares the milling of AZ91 Magnesium alloy in dry and cryogenic conditions. It studies surface integrity characteristics like surface roughness, hardness, microstructure and residual stresses to understand the influence of machining environment and cutting conditions on the same. The use of multi criteria decision making techniques is unique in this study, which has identified optimal machining conditions for both dry and cryogenic conditions.
Perspectives
I hope this article provides a clear understanding of the significance of machining environments and different cutting conditions on the milling of AZ91 Magnesium alloy. Such extensive experimental investigations have not been attempted before. It provides a complete and structured methodology to conduct these kinds of studies with interesting observations and conclusions, which has not been drawn before.
SRINIVASA P PAI
Read the Original
This page is a summary of: Cryogenic and conventional milling of AZ91 magnesium alloy, Journal of Magnesium and Alloys, June 2024, Tsinghua University Press,
DOI: 10.1016/j.jma.2024.06.004.
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