Precipitation and strengthening behavior of massive δ-ferrite in dissimilar stainless steels during massive phase transformation

被引：35

作者：

Hsieh, Chih-Chun ^{[1
]}

Lin, Dong-Yih ^{[2
]}

Chen, Ming-Che ^{[1
]}

Wu, Weite ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Mat Engn, Taichung 402, Taiwan

[2] I Shou Univ, Sect 1, Dept Mat Sci & Engn, Kaohsiung 840, Taiwan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 477卷 / 1-2期

关键词：

massive phase transformation; massive delta-ferrite; austenite; mechanical property;

D O I：

10.1016/j.msea.2007.05.037

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The purpose of this study is to discuss the microstructural evolution and mechanical property of the weld metal in the dissimilar stainless steels during the gas tungsten arc welding (GTAW) process. The massive precipitates and austenite phases were observed in the weld metal during the dissimilar stainless steels welding process. The XRD analyses showed that the delta-ferrite had the highest diffraction intensity all the phases in weld metals during the GTAW process. The amounts of delta-ferrite in the stainless steels weld metal also maintained a higher value after dissimilar welding. The massive delta-ferrite was identified to be a Cr-rich and Ni-depleted phase by mapping and WDS analysis, which indicated that Cr element was a stabilizer of the massive delta-ferrite in the weld metal stainless steels during dissimilar welding. The precipitation of the massive delta-ferrite was obvious to promote hardness values in the dissimilar stainless steels weld metals. Published by Elsevier B.V.

引用

页码：328 / 333

页数：6

共 33 条

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