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Nanocrystalline coating design for extreme applications based on the concept of complex adaptive behavior
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10.1063/1.2904907
/content/aip/journal/jap/103/8/10.1063/1.2904907
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/8/10.1063/1.2904907

Figures

Image of FIG. 1.
FIG. 1.

Tool life data for different categories of hard PVD coating under varying (severing) operating conditions during dry high performance machining (ball-nose end milling) of hardened tool steel: (a) RSW vs cutting speed and (b) tool life of TiAlCrSiYN coating under extreme cutting conditions (cutting speed of 600 m/min) in comparison with TiAlCrN coating under conventional cutting conditions (cutting speed of 300 m/min).

Image of FIG. 2.
FIG. 2.

High resolution TEM image (cross-sectional view) of ball-nose end mill with TiAlCrSiYN coating: (a) as-deposited condition and (b) after service (worn area).

Image of FIG. 3.
FIG. 3.

Micromechanical properties of TiAlCrN and TiAlCrSiYN coatings measured at room and elevated temperatures: (a) microhardness, (b) elastic modulus, (c) strain to failure ratio, and (d) microhardness dissipation parameter (plasticity index).

Image of FIG. 4.
FIG. 4.

TEM image (cross-sectional view) of the worn ball-nose area with TiAlCrSiYN coating with electron diffraction patterns and EDX spectra: region 1—buildup of workpiece material (steel H13), region 2—tool/buildup interface with the tribo-oxide formed during friction, and region 3—coating.

Image of FIG. 5.
FIG. 5.

Photoelectron spectra of worn surface of TiAlCrSiYN coating: (a) , (b) , (c) , and (d) .

Image of FIG. 6.
FIG. 6.

Fourier transformants of EELFS spectra from various microareas on the surface of worn crater: (a) nearest atomic surrounding that has the characteristics of a sapphire atomic structure and (b) nearest atomic surrounding has characteristics of a mullite atomic structure; the standard data of interatomic bond lengths in sapphire and mullite are presented at the top and the bottom correspondingly.

Image of FIG. 7.
FIG. 7.

Schematic diagram of complex adaptive behavior of the hard coatings under intensifying external conditions.

Tables

Generic image for table
Table I.

Cutting data for testing of the TiAlCrN-based PVD coatings under conditions of high performance machining of hard-to-cut material.

Generic image for table
Table II.

Microstructure characteristics and properties of TiAlCrN-based coatings.

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/content/aip/journal/jap/103/8/10.1063/1.2904907
2008-04-18
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Nanocrystalline coating design for extreme applications based on the concept of complex adaptive behavior
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/8/10.1063/1.2904907
10.1063/1.2904907
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