کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5365328 | 1388329 | 2008 | 8 صفحه PDF | دانلود رایگان |
The present study evaluates the tool life and the fracture toughness of AISI M2 steel cutting tools boronized by the paste boriding process. The treatment was done in selective form on the tool tips of the steels. The temperatures were set at 1173 and 1273Â K with 4Â h of exposure time and modifying the boron carbide paste thicknesses in 3 and 4Â mm. Microindentation fracture toughness method was used on the borided tool at the temperature of 1273Â K and a 4Â mm paste thickness, with a 100Â g load at different distances from the surface. Also, the borided cutting tools were worn by the turning process that implied the machining of AISI 1018 steel increasing the nominal cutting speed, of 55Â m/min, in 10 and 25% and maintaining the feed and the depth cut constants. The tool life was evaluated by the Taylor's equation that shows the dependence of the experimental parameters of the boriding process.
Journal: Applied Surface Science - Volume 254, Issue 10, 15 March 2008, Pages 2967-2974