Structural States of Steel 316L in the Zone of Welded Joint

被引：0
|
作者：
Yarkov, V. Yu. [1 ,2 ]
Pastukhov, V. I. [1 ,2 ]
Golosov, O. A. [1 ]
Tsuprun, Yu. I. [1 ]
Osintseva, A. A. [1 ]
机构：
[1] Inst Reactor Mat, Zarechnyi, Russia
[2] Ural Fed Univ, Ekaterinburg, Russia
来源：
METAL SCIENCE AND HEAT TREATMENT | 2023年 / 65卷 / 7-8期
关键词：
austenitic stainless steels; welded joint; heat-affected zone; delta-ferrite; phase transformations; orientation microscopy (EBSD); MECHANICAL-PROPERTIES; MICROSTRUCTURE;
D O I：
10.1007/s11041-023-00954-7
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The structure of a welded joint of stainless steel 316L is studied by the methods of scanning electron microscopy including microprobe x-ray spectrum analysis and diffraction of backscattered electrons (EBSD). It is shown that a double-phase structure forms in the region of the weld including high-temperature delta-ferrite and austenite. The austenite and the ferrite undergo recrystallization in direction < 100 > parallel to the heat removal. The presence of high-temperature delta-ferrite in the steel results in nonuniform distribution of the alloying elements (Cr, Ni, Mo) and in appearance of phase boundaries, which can reduce the corrosion resistance of the welded joint.
引用
收藏
页码：463 / 469
页数：7
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