Paper Title:
Microstructure and Properties of Ni3 (Si, Ti) Intermetallic Cladding with Nb Addition
  Abstract

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 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 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.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
1716-1719
DOI
10.4028/www.scientific.net/KEM.353-358.1716
Citation
Y. N. Sun, D. Fan, M. Sun, Y. F. Zheng, J. B. Zhang, "Microstructure and Properties of Ni3 (Si, Ti) Intermetallic Cladding with Nb Addition", Key Engineering Materials, Vols. 353-358, pp. 1716-1719, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: You Feng Zhang, Jun Li
Abstract:In situ reaction synthesized TiB reinforced titanium matrix composites were fabricated using rapid non-equilibrium synthesis techniques of...
398
Authors: Hu Cheng, Zhi Gang Fang, Sheng Dai, Xian Rui Zhao, Jian Yi
Chapter 2: Metal Casting Processes and Equipment
Abstract:The Co-based alloy coatings were successfully fabricated on H13 steel by Nd:YAG and CO2 laser. The microstructure and properties...
1665
Authors: Xiao Qin Guo, Jing Bo Chen, Xin Fang Zhang, Yong Kai Wang, Rui Zhang
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:Cu-TiB2 composite coatings were in-situ synthesized on the copper substrate by using a Nd: YAG laser. The microstructure of the coating and...
639
Authors: Jun Zhou, Fa Qin Xie, Jing Fang Jia, Nai Ming Lin, Xiang Qing Wu
Chapter 11: Thin Films/Surface Engineering/Coatings
Abstract:Ni-based TiN-TiC composite coating was fabricated on DZ125 superalloy surface by laser cladding. The phase constitution and microstructures...
1699
Authors: Xue Chen Li, Hao Liang Tian, Shi Cheng Wei, Hui Tong, Cheng Zhao, Bin Shi Xu
Chapter 1: Material Engineering and its Application Technology
Abstract:This paper reports on a new clad technology that is protective coating cladding. The method is that the Ni60 alloy was prepared on 0.45%C...
194