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The effect of tungsten content on the rolling texture and microstructure of Ta-W alloys
- Source :
- Materials Characterization. 159:110067
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- The effect of tungsten content on deformation texture and microstructure of Ta-W alloy is studied. It is found that the increase of tungsten content results in the strengthening of α-fiber and the weakening of γ-fiber in Ta-W alloys. The volume fraction of γ-fiber developed in Ta-10W alloy is lower than that in Ta-2.5W alloys. Meanwhile, a more significant through-thickness texture gradient is formed in Ta-10W alloy. The addition of tungsten has an important effect on the ability cross-slip of dislocations. Therefore, more dislocation loops and activated slip systems can be seen in Ta-2.5W alloy. The size of the dislocation cells in Ta-2.5W alloy is larger than that in Ta-10W alloy. As shear bands tends to appear in γ-fiber, the density of shear bands in the Ta-2.5W alloy is much higher than that of Ta-10W alloy at the same reduction strain. Meanwhile, the wavelength of the wavy shear bands in Ta-10W alloy is smaller than that in Ta-2.5W alloy. In Ta-10W alloy, new grains with Goss orientation can be seen in periodic shear bands developed in {111} orientations, which is different from that in Ta-2.5W alloy.
- Subjects :
- 010302 applied physics
Materials science
Mechanical Engineering
Alloy
chemistry.chemical_element
02 engineering and technology
engineering.material
Tungsten
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
01 natural sciences
Shear (sheet metal)
chemistry
Mechanics of Materials
0103 physical sciences
Volume fraction
engineering
General Materials Science
Texture (crystalline)
Deformation (engineering)
Composite material
Dislocation
0210 nano-technology
Subjects
Details
- ISSN :
- 10445803
- Volume :
- 159
- Database :
- OpenAIRE
- Journal :
- Materials Characterization
- Accession number :
- edsair.doi...........dba49e10ce108d8a5b737a64b79e3475