Microstructure and properties of Ni3(Si,Ti) intermetallic cladding with Nb addition

doi:10.4028/0-87849-456-1.1716

	Microstructure and properties of Ni3(Si,Ti) intermetallic cladding with Nb addition
	Sun, Yao-Ning 1; Fan, Ding 1,2; Sun, Ming 1; Zheng, Yu-Feng 1; Zhang, Jian-Bin 1
	2007
会议日期	November 22, 2006 - November 25, 2006
会议地点	Sanya, Hainan Island, China
关键词	Coating techniques Laser cladding Microhardness Microstructure Niobium Optical microscopy X ray diffraction Intermetallic cladding Metallurgical interface Nickel suicide Superalloy substrates
卷号	353-358
期号	PART 3
DOI	10.4028/0-87849-456-1.1716
页码	1716-1719
英文摘要	Laser cladding technique was used to form Ni3(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 NbNi 3, Nb3Ni2Si were detected in Nb additional experiments. The peaks intensity of Nb3Ni2Si and NbNi 3 increased with the increasing of Nb content. The Ni3Nb and Nb3Ni2Si were formed when Nb was beyond its solubility in the L12 Ni3(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	Key Engineering Materials
会议录出版者	Trans Tech Publications Ltd
语种	英语
ISSN号	10139826
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117117]
专题	材料科学与工程学院
作者单位	1.State Key Lab. of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2.Key Lab. of Non-ferrous Metal Alloys, Ministry of Education, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Sun, Yao-Ning,Fan, Ding,Sun, Ming,et al. Microstructure and properties of Ni3(Si,Ti) intermetallic cladding with Nb addition[C]. 见:. Sanya, Hainan Island, China. November 22, 2006 - November 25, 2006.