کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1662188 1517704 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of mechanical properties measured at room and elevated temperatures on the wear resistance of cutting tools with TiAlN and AlCrN coatings
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Effect of mechanical properties measured at room and elevated temperatures on the wear resistance of cutting tools with TiAlN and AlCrN coatings
چکیده انگلیسی

A comprehensive study of the mechanical properties of TiAlN and AlCrN coated cutting tools has been performed at room and elevated temperatures (up to 500 °C) using Micro Material's NanoTest Platform System. Micro-mechanical properties have been measured such as microhardness, elastic modulus, H/E ratio, microhardness dissipation parameter (MDP), critical load values (Lc1—first crack event; Lc2—load of dramatic coating failure) during scratch testing; a scratch crack propagation resistance parameter, CPRs = Lc1(Lc2 − Lc1) as well as nano-impact fracture resistance. Cutting tool life was studied under end milling conditions of the structural AISI 1040 steel.A correlation between CPRs was found with H/E ratio and MDP values. These parameters could be used to characterize the fracture toughness of the coatings. It was shown that mechanical characteristics such as H/E ratio, MDP and CPRs as well as nano-impact fracture resistance can be used to assess the resistance to adhesive-fatigue wear that is typical for end milling conditions.It was found that the microhardness of the coating and the H/E ratio reduces with rising temperature while the MDP value grows.The data obtained during quick laboratory nanohardness, nanoscratch as well as nano-impact fatigue testing can be used to rank the coatings studied and in some cases predict the relative life of a coated tool.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 200, Issues 20–21, 22 May 2006, Pages 5738–5742
نویسندگان
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