Research on the microstructure and wear resistance of titanium alloy structural members repaired by laser cladding

IMR OpenIR

	Research on the microstructure and wear resistance of titanium alloy structural members repaired by laser cladding
	W. F. Wang; M. C. Wang; Z. Jie; F. J. Sun; D. W. Huang
	2008
发表期刊	Optics and Lasers in Engineering
ISSN	0143-8166
卷号	46 期号:11 页码:810-816
摘要	Aero-engine overhaul calls for low-cost and high-quality method to solve the failure of structural members. This paper presents a pulsed-laser cladding (repair coating) of near alpha titanium alloy used for structural member repairing and investigates the microstructures, microhardness and wear resistance of the repair coating. The repair coating is mainly composed of alpha' martensite. The center region of the melting zone formed by each single pulse is characterized by micro-acicular martensite. At the margin, the microstructure shows columnar morphology. With a simplified model of laser cladding, the formation of columnar morphology is discussed. Compared with the substrate, the repair coatings show near performances on microhardness and wear resistance, and decrease the wear of lining pads dramatically in same condition. The different performances between repair coatings and substrate are mainly attributed to the different microstructures and the diffusive behaviors of 0, C, and other elements. The results above indicate that, it is feasible to repair the near alpha titanium alloy structural members by pulse-laser cladding. (C) 2008 Elsevier Ltd. All rights reserved.
部门归属	[wang, weifu; sun, fengjiu] northeastern univ, coll sci, shenyang 110004, peoples r china. [wang, weifu; wang, maocai; jie, zhang] inst met sci & technol, state key lab corros & protect, new delhi 110016, india. [huang, dawei] petr transportat co, petrochina liaohe oilfield, panjin 110016, peoples r china.;wang, wf (reprint author), northeastern univ, coll sci, shenyang 110004, peoples r china;wwfphd@yahoo.com.cn
关键词	Laser Cladding Titanium Alloy Repair Microstructure Wear Resistance Oxygen-permeation High-temperature
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33150
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. F. Wang,M. C. Wang,Z. Jie,et al. Research on the microstructure and wear resistance of titanium alloy structural members repaired by laser cladding[J]. Optics and Lasers in Engineering,2008,46(11):810-816.
APA	W. F. Wang,M. C. Wang,Z. Jie,F. J. Sun,&D. W. Huang.(2008).Research on the microstructure and wear resistance of titanium alloy structural members repaired by laser cladding.Optics and Lasers in Engineering,46(11),810-816.
MLA	W. F. Wang,et al."Research on the microstructure and wear resistance of titanium alloy structural members repaired by laser cladding".Optics and Lasers in Engineering 46.11(2008):810-816.