TiC/Ti composite layers fabricated by laser surface alloying

	TiC/Ti composite layers fabricated by laser surface alloying
	Zhang, Jian-bin; Fan, Ding; Dai, Jing-jie; Sun, Yao-ning
	2007
关键词	laser surface alloying titanium carbide TiC-Ti composite
卷号	336-338
页码	1148-1150
英文摘要	Laser surface alloying is an attractive processing to improve surface hardness, wear and corrosion resistance. In this paper, a continuous wave CO2 laser was used to irradiate commercially pure titanium surface with pre-placed active carbon powders in argon atmosphere. A compact, well-adherent, and crack-free TiC/Ti composite layer was obtained. The microstructure and phase constitution of the alloyed layers were determined and analyzed, and the micro-hardness was measured. The result of X ray diffraction (XRD) analysis shows that the alloyed layers contain TiC and Ti (martensite). The scanning electron microscopy (SEM) observation shows TIC growth morphologies have a well-developed dendrite, cellular dendrite, globular microstructure and cross-petal microstructure. The mechanism of the formation of titanium carbides is discussed. Micro-hardness of the laser surface alloyed layer was improved to 420 Hv as compared to 200 Hv of the as-received commercially pure titanium.
会议录	HIGH-PERFORMANCE CERAMICS IV, PTS 1-3
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND
语种	英语
WOS研究方向	Materials Science
WOS记录号	WOS:000246148001071
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/38146]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Zhang, Jian-bin
作者单位	Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jian-bin,Fan, Ding,Dai, Jing-jie,et al. TiC/Ti composite layers fabricated by laser surface alloying[C]. 见:.