Microstructure and Strength of a Friction Stir Welded Low-Alloy Steel Processed by Tempforming

被引：0
|
作者：
Dolzhenko, A. S. [1 ]
Lugovskaya, A. S. [1 ]
Belyakov, A. N. [1 ]
Kaibyshev, R. O. [2 ]
机构：
[1] Belgorod Natl Res Univ, Belgorod, Russia
[2] Russian State Agr Univ, Moscow Timiryazev Agr Acad, Moscow, Russia
来源：
RUSSIAN PHYSICS JOURNAL | 2024年 / 66卷 / 11期
关键词：
low-alloy steel; tempforming; microstructure; friction-stir welding; mechanical properties;
D O I：
10.1007/s11182-023-03054-4
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A feasibility of the friction stir welding for low-alloy structural steel processed by tempforming was analyzed. The stir zone was characterized by almost twofold increase in the hardness and the specific microstructure with an average grain size of 800 nm and large fractions of boundary misorientations around 60 degrees and below 5 degrees. The yield strength of the welded joint was 1220 MPa, whereas the yield strength of the base material was 1350 MPa. The fracture of the welded joint occurred in the heat affected zone between the stir zone and the base material.
引用
收藏
页码：1137 / 1144
页数：8
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