Investigation of the microstructure of dissimilar welds in duplex stainless steel and low alloyed steel

被引：6

作者：

Mitelea, Ion ^{[2
]}

Utu, Ion Dragos ^{[1
]}

Karancsi, Olimpiu ^{[3
]}

Urlan, Sorin Dumitru ^{[4
]}

Marius, Corneliu ^{[5
]}

机构：

[1] Univ Politehn Timisoara, Mat Sci & Mfg Dept, Timisoara, Romania

[2] Univ Politehn Timisoara, Mat Sci Mat & Heat Treatments Welded Struct & Sec, Timisoara, Romania

[3] Victor Babes Univ Med & Pharm, Timisoara, Romania

[4] Univ Politehn Timisoara, Timisoara, Romania

[5] Univ Politehn Timisoara, Dept Mat & Mfg Engn, Mat Sci, Timisoara, Romania

来源：

MATERIALS TESTING | 2019年 / 61卷 / 02期

关键词：

Chemical composition; dissimilar weld; duplex stainless steel; Cr-Mo steel; hardness; microstructure; fusion line; MECHANICAL-PROPERTIES; JOINTS;

D O I：

10.3139/120.111292

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The chemical and microstructural heterogeneities of arc welded joints of duplex stainless steel (X2CrNi-MoN22-5-3) and chromium-molybdenum (13CrMo4-5) low alloy steel have been investigated. Rutile coated electrodes containing chromium and molybdenum amounts similar to that of duplex stainless steel but with a higher nickel content have been selected for the manual welding of the joints. The higher nickel content has been chosen, since nickel promotes the formation of austenite and induces an approximately equal proportion of ferrite and austenite in the weld. At the interface between the low alloyed steel and the weld metal as well as in the cross section of the weld metal, chemical and microstructural variations have been determined.

引用

页码：120 / 124

页数：5

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