Microstructural evolution with various Ti contents in Fe-based hardfacing alloys using a GTAW technique

被引：12
作者：
Hsieh, Chih-Chun [1 ]
Liu, Yi-Chia [1 ]
Wang, Jia-Siang [1 ]
Wu, Weite [1 ]
机构：
[1] Natl Chung Hsing Univ, Dept Mat Sci & Engn, Taichung 402, Taiwan
来源：
METALS AND MATERIALS INTERNATIONAL | 2014年 / 20卷 / 04期
关键词：
alloys; welding; microstructure; mechanical properties; precipitation; MECHANICAL-PROPERTIES; WEAR BEHAVIOR; ABRASIVE WEAR;
D O I：
10.1007/s12540-014-4015-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of this study is to discuss the effect of microstructural development with different Ti contents in Fe-based hardfacing alloys. A series of Fe-Cr-C-Si-Mn-xTi alloy fillers was deposited on SS400 low carbon steel substrate using oscillating gas tungsten arc welding. The microstructure in the Fe-based hardfacing alloy without Ti content addition included: the primary gamma, eutectic gamma+(Fe,Cr)(3)C, eutectic gamma+(Fe,Cr)(2)C and martensite. With increasing Ti contents, the microstructures showed the primary TiC carbide, gamma phase and eutectic gamma+(Fe,Cr,Ti)(3)C. The amount and size of TiC carbide in the hardfacing layers increased as the Ti content increased. However, the eutectic gamma+(Fe,Cr,Ti)(3)C content decreased as the Ti content increased. According to the results of the hardness test, the lowest hardness value (HRC 54.93) was found with 0% wt% Ti and the highest hardness (HRC 60.29) was observed with 4.87 wt% Ti.
引用
收藏
页码：701 / 712
页数：12
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