Lateral gradients of phases, residual stress and hardness in a laser heated Ti0.52Al0.48N coating on hard metal

被引：37

作者：

Bartosik, M. ^{[2
]}

Daniel, R. ^{[3
]}

Zhang, Z. ^{[2
]}

Deluca, M. ^{[4
,5
]}

Ecker, W. ^{[5
]}

Stefenelli, M. ^{[2
,5
]}

Klaus, M. ^{[6
]}

Genzel, C. ^{[6
]}

Mitterer, C. ^{[3
]}

Keckes, J. ^{[1
,2
,5
]}

机构：

[1] Montan Univ Leoben, Christian Doppler Lab Applicat Oriented Coating D, Dept Mat Phys, Leoben, Austria

[2] Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-1010 Vienna, Austria

[3] Montan Univ Leoben, Dept Phys Met & Mat Testing, Leoben, Austria

[4] Montan Univ Leoben, Inst Struktur & Funkt Keram, Leoben, Austria

[5] Mat Ctr Leoben Forsch GmbH, Leoben, Austria

[6] Helmholtz Zentrum Berlin Mat & Energie, Berlin, Germany

来源：

SURFACE & COATINGS TECHNOLOGY | 2012年 / 206卷 / 22期

关键词：

TiAlN; Residual stress; Phase transformation; Synchrotron; X-ray diffraction; Laser; X-RAY-DIFFRACTION; THIN-FILMS; MECHANICAL-PROPERTIES; THERMAL-STABILITY; (TI; AL)N COATINGS; CREEP ANALYSIS; NITRIDE; STEEL; CRN; ORIENTATION;

D O I：

10.1016/j.surfcoat.2012.02.035

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of a local thermal treatment on the properties of Ti-Al-N coatings is not understood. In the present work, a Ti0.52Al0.48N coating on a WC-Co substrate was heated with a diode laser up to 900 degrees C for 30 s and radially symmetric lateral gradients of phases, residual stress and hardness were characterized ex-situ using position-resolved synchrotron X-ray diffraction, Raman spectroscopy, transmission electron microscopy and nanoindentation. The results reveal (i) a residual stress relaxation at the edge of the irradiated area and (ii) a compressive stress increase of few GPa in the irradiated area center due to the Ti-Al-N decomposition, in particular due to the formation of small wurtzite (w) AlN domains. The coating hardness increased from 35 to 47 GPa towards the center of the heated spot. In the underlying heated substrate, a residual stress change from about -200 to 500 MPa down to a depth of 6 mu m is observed. Complementary, in-situ high-temperature X-ray diffraction analysis of stresses in a homogeneously heated Ti0.52Al0.48N coating on a WC-Co substrate was performed in the range of 25-1003 degrees C. The in-situ experiment revealed the origin of the observed thermally-activated residual stress oscillation across the laser heated spot. Finally, it is demonstrated that the coupling of laser heating to produce lateral thermal gradients and position-resolved experimental techniques opens the possibility to perform fast screening of structure-property relationships in complex materials. 2012 Elsevier B.V. All rights reserved.

引用

页码：4502 / 4510

页数：9

共 33 条

[21] Coatings with intrinsic stress profile:: Refined creep analysis of (Ti,Al)N and cracking due to cyclic laser heating [J].

Klotz, K ;

Bahr, U ;

Brückner, W ;

Bahr, HA ;

Balke, H ;

Kirchhoff, G ;

Weiss, HJ ;

Göbel, T ;

Menzel, S ;

Wetzig, K .

THIN SOLID FILMS, 2006, 496 (02) :469-474

[22] Creep analysis and laser-induced cracking of (Ti,Al)N coatings [J].

Klotz, K ;

Bahr, HA ;

Balke, H ;

Göbel, T ;

Menzel, S ;

Bahr, U ;

Kirchhoff, G ;

Wetzig, K .

THIN SOLID FILMS, 2002, 413 (1-2) :131-138

[23] Tribology of coated tools in conventional and HSC machining [J].

Kopac, J ;

Sokovic, M ;

Dolinsek, S .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2001, 118 (1-3) :377-384

[24] Self-organized nanostructures in the Ti-Al-N system [J].

Mayrhofer, PH ;

Hörling, A ;

Karlsson, L ;

Sjölén, J ;

Larsson, T ;

Mitterer, C ;

Hultman, L .

APPLIED PHYSICS LETTERS, 2003, 83 (10) :2049-2051

[25]

Noyan I.C., 1987, Residual stress: Measurement by diffraction and interpretation

[26] AN IMPROVED TECHNIQUE FOR DETERMINING HARDNESS AND ELASTIC-MODULUS USING LOAD AND DISPLACEMENT SENSING INDENTATION EXPERIMENTS [J].

OLIVER, WC ;

PHARR, GM .

JOURNAL OF MATERIALS RESEARCH, 1992, 7 (06) :1564-1583

[27] Single layer and multilayer wear resistant coatings of (Ti,Al)N: a review [J].

PalDey, S ;

Deevi, SC .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 342 (1-2) :58-79

[28] Three-dimensional atom probe investigations of Ti-Al-N thin films [J].

Rachbauer, R. ;

Stergar, E. ;

Massl, S. ;

Moser, M. ;

Mayrhofer, P. H. .

SCRIPTA MATERIALIA, 2009, 61 (07) :725-728

[29] Effect of Internal Interfaces on Hardness and Thermal Stability of Nanocrystalline Ti0.5Al0.5N Coatings [J].

Rafaja, D. ;

Wuestefeld, C. ;

Baehtz, C. ;

Klemm, V. ;

Dopita, M. ;

Motylenko, M. ;

Michotte, C. ;

Kathrein, M. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2011, 42A (03) :559-569

[30] A heating stage up to 1173 K for X-ray diffraction studies in the whole orientation space [J].

Resel, R ;

Tamas, E ;

Sonderegger, B ;

Hofbauer, P ;

Keckes, J .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2003, 36 :80-85

← 1 2 3 4 →