Microstructure evolution of friction stir welding of Ti6321 titanium alloy based on the weld temperature below microstructure transformation temperature

被引：25

作者：

Gao, Fuyang ^{[1
]}

Guo, Yufan ^{[1
]}

Yu, Wei ^{[1
]}

Jiang, Peng ^{[1
]}

Liao, Zhiqian ^{[1
]}

机构：

[1] Luoyang Ship Mat Res Inst, Luoyang 471000, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2021年 / 177卷

关键词：

Titanium alloy; Friction stir welding; Electron-backscatter diffraction; Microstructure; Texture; MECHANICAL CHARACTERIZATION; GRAIN-STRUCTURE; TEXTURE DEVELOPMENT; TECHNOLOGY;

D O I：

10.1016/j.matchar.2021.111121

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure transformation and texture characteristics of friction stir welded joint of titanium alloy were studied from two aspects of temperature and flow deformation. The deformation mechanism of friction stir welding of titanium alloy and the basis of optimization process were analyzed and revealed from the perspective of high temperature plastic forming by means of temperature field measurement, finite element simulation and hot compression test. The mechanism of texture transformation during welding below transformation temperature is analyzed and explained by flow field simulation and Electron-backscatter diffraction results. At the same time, according to the deformation mechanism and metallographic observation results, the grain refinement mechanism in each zone of the joint was analyzed and discussed, and the microstructure and texture transformation mechanism of each zone of the joint were explained, which provided theoretical support for the regulation of microstructure and texture. Based on our work, we expect the wide application of FSW in producing high-quality titanium alloy joints.

引用

页数：17

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