Effect of heat input on the microstructure of in-situ synthesized TiN-TiB/Ti based composite coating by laser cladding

被引：85

作者：

Li, M. ^{[1
]}

Huang, J. ^{[1
]}

Zhu, Y. Y. ^{[1
]}

Li, Z. G. ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2012年 / 206卷 / 19-20期

关键词：

Laser cladding; In situ; TiN-TiB/Ti based composite coating; WEAR-RESISTANCE; SURFACE MODIFICATION; FORMATION MECHANISM; TI-6AL-4V; BN; AL;

D O I：

10.1016/j.surfcoat.2012.03.082

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In situ synthesized TiN and TiB particulate-reinforced metal matrix composite coating was formed on Ti-3Al-2V alloy by laser cladding with a Ti/h-BN powder mixture. The phase structure, microstructure, microhardness and wear performance of the composite clad layer were analyzed by optical microscope (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), micro-hardness tester and wear testing machine. It has been found that the clad layer mainly consisted of alpha-Ti, TiN and Ti4N3-x at the laser power density of 120 W/mm(2); While, TiB and TiN were synthesized at the laser power densities of 150 and 180 W/mm(2). TiN and TiB were compared with dendrite and needle platelet type microstructures. The microhardness of laser clad layer was 800-1200 HV0.3 which was about 5 times of the substrate. The lost height of the substrate is almost 2 times of the clad layers. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：4021 / 4026

页数：6

共 23 条

[11] Research on microstructure of in situ synthesized TiB2/Ni metal-ceramics composite coating [J].

Liu, S ;

Zhang, WP .

JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 391 (1-2) :146-150

[12] Friction and wear behavior of Ti following laser surface alloying with Si, Al and Si plus Al [J].

Majumdar, JD ;

Mordike, BL ;

Manna, I .

WEAR, 2000, 242 (1-2) :18-27

[13] Microstructure and formation mechanism of in situ synthesized TiC/Ti surface MMC on Ti-6Al-4V by laser cladding [J].

Man, HC ;

Zhang, S ;

Cheng, FT ;

Yue, TM .

SCRIPTA MATERIALIA, 2001, 44 (12) :2801-2807

[14] Laser cladding of Ni-base composite coatings onto Ti-6Al-4V substrates with pre-placed B4C+NiCrBSi powders [J].

Meng, QW ;

Geng, L ;

Zhang, BY .

SURFACE & COATINGS TECHNOLOGY, 2006, 200 (16-17) :4923-4928

[15] LASER CLADDING OF TI-6AL-4V WITH BN FOR IMPROVED WEAR PERFORMANCE [J].

MOLIAN, PA ;

HUALUN, L .

WEAR, 1989, 130 (02) :337-352

[16] Sliding wear resistance of metal matrix composite layers prepared by high power laser [J].

Ocelík, V ;

Matthews, D ;

De Hosson, JTM .

SURFACE & COATINGS TECHNOLOGY, 2005, 197 (2-3) :303-315

[17]

Selvan JS, 1999, MAT SCI ENG A-STRUCT, V260, P178, DOI 10.1016/S0921-5093(98)00964-2

[18] Laser clad TiC reinforced NiCrBSi composite coatings on Ti-6Al-4V alloy using a CW CO2 laser [J].

Sun, R. L. ;

Lei, Y. W. ;

Niu, W. .

SURFACE & COATINGS TECHNOLOGY, 2009, 203 (10-11) :1395-1399

[19] Analysis of the growth morphology of TiB and the microstructure refinement of the coatings fabricated on Ti-6Al-4V by laser boronizing [J].

Tian, Y. S. ;

Zhang, Q. Y. ;

Wang, D. Y. ;

Chen, C. Z. .

CRYSTAL GROWTH & DESIGN, 2008, 8 (02) :700-703

[20] Research progress on laser surface modification of titanium alloys [J].

Tian, YS ;

Chen, CZ ;

Li, ST ;

Huo, QH .

APPLIED SURFACE SCIENCE, 2005, 242 (1-2) :177-184

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