Microstructural study of super Ni laminated composite/1Cr18Ni9Ti steel dissimilar welded joint

被引：9
|
作者：
Xia, C. Z. [1 ]
Li, Y. J. [1 ]
Puchkov, U. A. [2 ]
Wang, J. [1 ]
机构：
[1] Shandong Univ, Minist Educ, Key Lab Liquid Struct & Hered Mat, Jinan 250061, Shandong, Peoples R China
[2] Bauman Moscow State Tech Univ, Dept Mat Sci, Moscow 105005, Russia
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2010年 / 26卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Laminated composite; Super Ni/NiCr; Microstructure; Dissimilar material; TIG;
D O I：
10.1179/174328409X410836
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Super Ni laminated composite and 1Cr18Ni9Ti stainless steel were welded by the tungsten inert gas process with the Cr25-Ni13 filler alloy. The microstructure, element distribution and phase formation near the fusion zone were evaluated by standard technique. Results indicated the formation of four main regions: the fusion transition region on the 1Cr18Ni9Ti steel side, the fusion transition region on the super Ni laminated composite side, a columnar crystal weld region and the weld centre region. The microstructure on either side of the weld was characterized by strong directionality and changed from columnar austenite to equiaxed austenite in the weld centre. A Ni, Fe and Cr element transition region, about 30 mm wide, was formed at the fusion zone on the super Ni side. The phase formed into welded zone was composed mainly of austenite, delta-Fe, gamma-Ni(Cr, Fe) and FeNi intermetallic compounds.
引用
收藏
页码：1358 / 1362
页数：5
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