Microstructure and mechanical properties at TiCp/Ni-alloy interfaces in laser-synthesized coatings

doi:10.1016/S0921-5093(01)01394-6

IMECH-IR > 力学所知识产出(1956-2008)

	Microstructure and mechanical properties at TiCp/Ni-alloy interfaces in laser-synthesized coatings
	Wu XL(武晓雷); Hong YS(洪友士); Wu, XL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 ZhongGuanCun Rd, Beijing 100080, Peoples R China.
发表期刊	Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
	2001
卷号	318 期号:1-2 页码:15-21
ISSN	0921-5093
摘要	Titanium carbide particle (TiCp) reinforced Ni alloy composite coatings were synthesized by laser cladding using a cw 3 kW CO2 laser. Two kinds of coatings were present in terms of TiCp origins, i.e. undissolved and in situ reacted TiCp, respectively. The former came from the TiCp pre-coated on the sample, whereas the latter from in situ reaction between titanium and graphite in the molten pool during laser irradiation. Conventional and high-resolution transmission electron microscope observations showed the epitaxial growth of TiC, the precipitation of CrB, and the chemical reaction between Ti and B elements around phase interfaces of undissolved TiCp. The hardness, H, and elastic modulus, E, were measured by nanoindentation of the matrix near the TiCp interface. For undissolved TiCp, the loading curve revealed pop-in phenomena caused by the plastic deformation of the crack formation or debounding of TiCp from the matrix. As for in situ generated TiCp, no pop-in mark appears. On the other hand, in situ reacted TiCp led to much higher hardness and modulus than that in the case of undissolved TiCp. The coating reinforced by in situ generated TiCp displayed the highest impact wear resistance at both low and high impact conditions, as compared with coatings with undissolved TiCp and without TiCp. The impact wear resistance of the coating reinforced by undissolved TiCp increases at a low impact work but decreases at a high impact work, as compared with the single Ni alloy coating. The degree of wear for the composite coating depends primarily on the debonding removal of TiCp.
学科领域	力学
DOI	10.1016/S0921-5093(01)01394-6
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000173196700002
关键词[WOS]	WEAR ; HARDNESS
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/17127
专题	力学所知识产出(1956-2008)
通讯作者	Wu, XL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 ZhongGuanCun Rd, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Wu XL,Hong YS,Wu, XL . Microstructure and mechanical properties at TiCp/Ni-alloy interfaces in laser-synthesized coatings[J]. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,2001,318,1-2,:15-21.
APA	武晓雷,洪友士,&Wu, XL .(2001).Microstructure and mechanical properties at TiCp/Ni-alloy interfaces in laser-synthesized coatings.Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,318(1-2),15-21.
MLA	武晓雷,et al."Microstructure and mechanical properties at TiCp/Ni-alloy interfaces in laser-synthesized coatings".Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 318.1-2(2001):15-21.

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