کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1658357 1517669 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pressure and temperature effects on the decomposition of arc evaporated Ti0.6Al0.4N coatings in continuous turning
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Pressure and temperature effects on the decomposition of arc evaporated Ti0.6Al0.4N coatings in continuous turning
چکیده انگلیسی

The isostructural decomposition of arc evaporated Ti0.6Al0.4N coatings at elevated temperatures and high stresses occurring during metal cutting has been studied. Comparisons are made with short time (t = 10 min) anneals at temperatures typical for steel turning operations. The evolution of the spinodal wavelengths is studied by analytical transmission electron microscopy from samples originating from the rake face. Temperature and force measurements during turning allowed for separation of the effects of the temperature and stresses on wavelength evolution. The results show a peak temperature of around 900 °C and a peak normal stress of around 2 GPa during cutting. The overall wavelength is longer after cutting compared to the annealed sample at the same temperature. The results suggest that pressures generated during cutting promote coherent isostructural decomposition which is in line with theoretical studies but for considerably higher pressures.


► Cutting stresses in the GPa region are measured during turning.
► An ongoing spinodal decomposition of TiAlN is reported after machining.
► The spinodal decomposition of TiAlN is promoted by the high cutting stresses.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 209, 25 September 2012, Pages 203–207
نویسندگان
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