Microstructure and properties of Ni-3(Si,Ti) intermetallic cladding with Nb addition

	Microstructure and properties of Ni-3(Si,Ti) intermetallic cladding with Nb addition
	Sun, Yao-ning; Fan, Ding; Sun, Ming; Zheng, Yu-Feng; Zhang, Jian-Bin
	2007
关键词	laser cladding nickel silicide intermetallics microstructure alloying
卷号	353-358
页码	1716-1719
英文摘要	Laser cladding technique was used to form Ni-3(Si,Ti) intermetallic coating by Nb addition on Ni-based superalloy substrate. The coating was investigated by optical microscopy and X-ray diffraction (XRD). The clad coating was dense, compact and smooth. An excellent bonding between the coating and the substrate was ensured by a strong metallurgical interface. Ni3(Si,Ti) phase was detected in all of the claddings, and NbNi3, Nb3Ni2Si were detected in Nb additional experiments. The peaks intensity of Nb3Ni2Si and NbNi3 increased with the increasing of Nb content. The Ni3Nb and Nb3Ni2Si were formed when Nb was beyond its solubility in the LI2 (Si,Ti). The average microhardness of the coating was improved with the increasing of the Nb content. The microhardness was up to 530Hv when the atom percentage of Nb addition reached 5%, and it was much greater than that of Ni-based superalloy substrate.
会议录	PROGRESSES IN FRACTURE AND STRENGTH OF MATERIALS AND STRUCTURES, 1-4
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND
语种	英语
WOS研究方向	Materials Science
WOS记录号	WOS:000252246301060
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/38129]
专题	材料科学与工程学院
通讯作者	Sun, Yao-ning
作者单位	Lanzhou Univ Technol, State Key lab Gansu Adv Non Ferrous Met Mat, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Sun, Yao-ning,Fan, Ding,Sun, Ming,et al. Microstructure and properties of Ni-3(Si,Ti) intermetallic cladding with Nb addition[C]. 见:.