Paper Title:
The Effect of Microstructure on Properties of Fe-Cr-C-Nb/Ti Hardfacing Alloy
  Abstract

Hardfacing is one of the most useful and economical ways to improve the performance of components submitted to severe wear conditions. In this paper, a new kind of alloy called Fe-Cr-C-Nb/Ti alloy system for wear resistant successfully with the shielded metal arc welding (SMAW) method has been studied. The microstructure and wear resistant of hardfacing alloys reinforced with primary carbides were compared in this study. Meanwhile, the average hardness, the abrasion weight loss and microstructure of deposited metal were systematically studied by optical microscopy, scanning electronic microscopy and energy dispersive spectrum analysis. The results showed that the microstructure of the best optimizing hardfacing layer was the mixed martensite and little retained austenite, and NbC/TiC particles distributing dispersively in the matrix. The amount of low-carbon martensite and high-carbon martensite was identical. The alloy system showed high wear resistance due to the formation of dispersed MC type carbides and good toughness due to the exist of low carbon martensite in the matrix. The hardfacing alloy reinforced with complex carbides was also investigated, the microstructure was analyzed and its hardness and wear resistance were evaluated. In conclusion, the distribution, the chemical composition and the amount of the carbides, as well as the matrix microstructure are all factors to influence the crack resistance, hardness and wear resistance of the hardfacing alloys.

  Info
Periodical
Chapter
I. Solid Materials
Edited by
Fei Hu and Beibei Wang
Pages
126-131
DOI
10.4028/www.scientific.net/AMR.279.126
Citation
W. B. Tang, Y. G. Guo, H. G. Wang, "The Effect of Microstructure on Properties of Fe-Cr-C-Nb/Ti Hardfacing Alloy", Advanced Materials Research, Vol. 279, pp. 126-131, 2011
Online since
July 2011
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: Duk Hyun Nam, Kyu Hong Lee, Sung Hak Lee
Abstract:The present study is concerned with the improvement of hardness and wear resistance in (Cr3C2,CrB)/carbon steel surface composites...
637
Authors: Buntoeng Srikarun, Prapas Muangjunburee
Chapter 2: Materials Processing Technology
Abstract:The objective of this research is to develop the welding procedure for multilayer hardfacing of 3.5 %chromium cast steel and study wear...
167
Authors: Ján Viňáš, Janette Brezinová, Miroslav Greš
Chapter 1: Research and Development of Processing Technologies for Metals and Alloys in Engineering Industry
Abstract:The paper deals with the tribological properties of investigated types of hard-faced materials at erosive wear process. Influence of...
33
Authors: Kittipong Kimapong, Pramote Poonayom, Voraya Wattanajitsiri
Chapter 2: Steel and Technologies of Metals Processing
Abstract:Hard-facing welding is one of the repairing methods for increasing hard metal on the agricultural machine part surfaces that caused by the...
55