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首页> 外文期刊>International Journal of Sustainable Manufacturing >Investigating the microstructure and morphology of chips in dry, flood coolant and MQL machining of Ti-6Al-4V alloy
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Investigating the microstructure and morphology of chips in dry, flood coolant and MQL machining of Ti-6Al-4V alloy

机译：研究干燥，泛冷却剂和MQL加工芯片的微观结构和形态，CI-6AL-4V合金

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摘要

The objective of this research is to investigate the morphology and microstructure of the chips formed during milling of Ti-6Al-4V alloy using conventional flood coolant and sustainable dry and MQL machining conditions. It was found that the chips formed in dry machining suffered a higher degree of serration indicating higher chip temperature and ineffective cooling of the chips. The bi-modal structure of Ti-6Al-4V remained the same in the bulk part of the chips. However, phase transformations were seen for all three machining conditions at the shearing plane of the chips. The chips formed in dry machining had comparatively higher percentage of β-phase due to phase transformation. For the chips obtained in flood coolant machining, the transformed β-phase possibly returned to martensitic α-phase due to rapid cooling. The MQL machined chips had the least transformation of β-phase, indicating minimal changes in mechanical properties of the machined parts in sustainable MQL machining.
机译：本研究的目的是研究使用常规的泛冷却剂和可持续的干燥和MQL加工条件研磨Ti-6Al-4V合金期间形成的芯片的形态和微观结构。 发现，在干燥加工中形成的芯片遭受更高程度的血液，表明芯片的芯片温度和无效冷却。 Ti-6Al-4V的双模态结构在芯片的块状部分中保持不变。 然而，对于芯片的剪切平面的所有三种加工条件，可以看到相变。 在干燥加工中形成的芯片由于相变由于相变而具有相对较高的β相的百分比。 对于在洪水冷却剂加工中获得的芯片，由于快速冷却，转化的β相可能返回马氏体α-阶段。 MQL加工芯片具有β相的变化最小，表明可持续MQL加工中加工部件的机械性能的最小变化。

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