Towards an improvement of performance of TiAlN hard coatings using metal interlayers

2002 ◽  
Vol 750 ◽  
Author(s):  
J. M. Castanho ◽  
M. T. Vieira
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Shear Stress ◽  
High Speed ◽  
Cutting Tools ◽  
Hard Coatings ◽  
Deformation Mechanisms ◽  
Multilayer Coatings ◽  
High Speed Machining ◽  
High Speed Cutting

ABSTRACTTiAlN sputtered coatings have been used with success in high-speed cutting tools in the last few years. However, the adhesive failures of the coatings refrain its application in more severe wear conditions like as high-speed machining. The assumptions for the present research were based on the hypothesis that thin metal interlayers will behave as shear stress sinkers, which could decrease the delamination of the thin films. In the present work, coatings of TiAlN with thin ductile metallic interlayers (Al, Ti, Cu and Ag) were deposited by reactive d.c. magnetron sputtering. Multilayer coatings with aluminum, titanium and silver interlayers achieve higher adhesion values (70N) than TiAlN monolithic coating (40N). Three and five metal ductile layers contribute to an increase of hardness and Young's modulus without change the residual stresses of the monolithic coating. Contrarily, the introduction of copper layers reduces all the studied mechanical properties of the TiAlN monolithic coatings, which are related to the different deformation mechanisms of the ductile interlayers.

Main Features of High Speed Machining Chucks and their Selection

2019 ◽  
Vol 814 ◽  
pp. 217-223
Author(s):  
Gui Cheng Wang ◽  
Tao Pang ◽  
Guo Yong Xu ◽  
Ding Jiang
Keyword(s):  
Theoretical Basis ◽  
High Speed ◽  
Cutting Tools ◽  
High Speed Machining ◽  
Rational Selection ◽  
High Speed Cutting ◽  
Main Application ◽  
Technical Requirements ◽  
Comprehensive Performance ◽  
Selection Of

With the development of high-speed machining technology, new technical requirements have been put forward for the clamping of high-speed cutting tools. The traditional clamping methods can not meet the needs of high-speed machining. In this paper, the comprehensive performance of high-speed chucks is systematically compared and analyzed, and the characteristics and main application areas of various high-speed chucks are sorted out, which provides a theoretical basis for scientific and rational selection of chucks.

Controlled Contact Cutting Tools

1959 ◽  
Vol 81 (2) ◽  
pp. 139-147 ◽  
Author(s):  
B. T. Chao ◽  
K. J. Trigger
Keyword(s):  
Shear Stress ◽  
Surface Finish ◽  
High Speed ◽  
Metal Cutting ◽  
Cutting Tools ◽  
Substantial Reduction ◽  
Cutting Fluids ◽  
Dynamic Shear ◽  
Effective Utilization ◽  
High Speed Cutting

A substantial reduction in power consumption, an increase in tool life, more effective utilization of cutting fluids, and improved surface finish on the machined workpiece have been achieved by suitably controlling the length of tool-chip contact. Reasons for these findings are discussed in terms of basic variables in chip formation mechanics. Artificially restricted contact tools open new avenues for metal cutting research. Machining data obtained with such tools provide further evidence of the invariant behavior of the dynamic shear stress of metals under high-speed cutting conditions, and unfold interesting information on the intricate nature of tool-chip contact.

The Application of FEA in High-Speed Cutting

2011 ◽  
Vol 287-290 ◽  
pp. 104-107
Author(s):  
Lian Qing Ji ◽  
Kun Liu
Keyword(s):  
High Speed ◽  
Feeding Rate ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Material Model ◽  
Friction Model ◽  
Cutting Depth ◽  
High Speed Cutting ◽  
Key Technologies

The history and application of the FEA are briefly presented in this paper. Several key technologies such as the building of material model, the establishment of the chip - tool friction model as well as meshing are described. Taking the high-speed cutting of titanium alloy (Ti - 10V - 2Fe - 3Al) as an example , reasonable cutting tools and cutting parameters are determinted by simulating the influences of cutting speed, cutting depth and feeding rate on the cutting parameters using FEA.

Effect of Crystallographic Orientation on Nanoindentation Response of Fe3Si Single-Crystals

2018 ◽  
Vol 784 ◽  
pp. 44-48 ◽  
Author(s):  
Jaroslav Čech ◽  
Petr Haušild ◽  
Aleš Materna
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Shear Stress ◽  
Contact Area ◽  
Measured Data ◽  
Deformation Mechanisms ◽  
Spherical Indentation ◽  
Indentation Modulus ◽  
Slip Systems ◽  
Correct Interpretation

Deformation mechanisms and mechanical properties of Fe3(wt.%)Si single crystal in two different orientations were investigated by spherical indentation. For correct interpretation of measured data and better understanding of the deformation mechanisms under the contact area, finite element simulations were carried out and resolved shear stress in available slip systems was computed. Pop-in behavior, differences in hardness, indentation modulus and shapes of residual imprints were observed and associated with different activation of slip.

The Research for Data Acquisition Technology in High-Speed Cutting Database

2014 ◽  
Vol 590 ◽  
pp. 418-421
Author(s):  
Yan Zhang ◽  
Xiao Jun Guo
Keyword(s):  
Data Mining ◽  
Data Acquisition ◽  
Economic Benefit ◽  
High Speed ◽  
Manufacturing Industry ◽  
Data Sources ◽  
High Speed Machining ◽  
Cutting Efficiency ◽  
High Speed Cutting ◽  
Important Significance

The establishment of high-speed cutting database provides reasonable, optimized high-speed cutting data for mechanical manufacturing industry. It also has important significance for promoting the application and development of high-speed machining technology and improving cutting efficiency and economic benefit. Through combining high-speed cutting database researches. This article focused on analyzing data sources, data mining technology about high-speed cutting database.

The Application of FEA in High-Speed Cutting Tool

2011 ◽  
Vol 314-316 ◽  
pp. 1258-1261
Author(s):  
Lian Qing Ji ◽  
Kun Liu
Keyword(s):  
Titanium Alloy ◽  
Cutting Force ◽  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Cutting Temperature ◽  
Material Model ◽  
Friction Model ◽  
High Speed Cutting ◽  
Key Technologies

The history and application of the FEA are briefly presented in this paper. Several key technologies such as the building of material model, the establishment of the chip - tool friction model as well as meshing are described. Taking the high-speed cutting of titanium alloy (Ti - 10V - 2Fe - 3Al) as an example , reasonable cutting tools parameters are determined by simulating the influences of cutting temperature, cutting force on the tools parameters using FEA.

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