Cold rotary swaging of a tungsten heavy alloy: Numerical and experimental investigations

2016 ◽  
Vol 61 ◽  
pp. 264-272 ◽  
Author(s):  
Radim Kocich ◽  
Lenka Kunčická ◽  
Daniel Dohnalík ◽  
Adéla Macháčková ◽  
Michal Šofer
Keyword(s):  
Heavy Alloy ◽  
Experimental Investigations ◽  
Tungsten Heavy Alloy ◽  
Rotary Swaging

scholarly journals Affecting Structure Characteristics of Rotary Swaged Tungsten Heavy Alloy Via Variable Deformation Temperature

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4200 ◽  
Author(s):  
Adéla Macháčková ◽  
Ludmila Krátká ◽  
Rudolf Petrmichl ◽  
Lenka Kunčická ◽  
Radim Kocich
Keyword(s):  
Mechanical Properties ◽  
Residual Stress ◽  
Deformation Behaviour ◽  
Heavy Alloy ◽  
Tungsten Heavy Alloy ◽  
Structural Development ◽  
Material Behaviour ◽  
Real Experiment ◽  
Structure Characteristics ◽  
Rotary Swaging

This study focuses on numerical prediction and experimental investigation of deformation behaviour of a tungsten heavy alloy prepared via powder metallurgy and subsequent cold (20 °C) and warm (900 °C) rotary swaging. Special emphasis was placed on the prediction of the effects of the applied induction heating. As shown by the results, the predicted material behaviour was in good correlation with the real experiment. The differences in the plastic flow during cold and warm swaging imparted differences in structural development and the occurrence of residual stress. Both the swaged pieces exhibited the presence of residual stress in the peripheries of W agglomerates. However, the NiCO matrix of the warm-swaged piece also exhibited the presence of residual stress, and it also featured regions with increased W content. Testing of mechanical properties revealed the ultimate tensile strength of the swaged pieces to be approximately twice as high as of the sintered piece (860 MPa compared to 1650 MPa and 1828 MPa after warm and cold swaging, respectively).

Effect of thermomechanical processing via rotary swaging on properties and residual stress within tungsten heavy alloy

2020 ◽  
Vol 87 ◽  
pp. 105120 ◽  
Author(s):  
Lenka Kunčická ◽  
Adéla Macháčková ◽  
Nicholas P. Lavery ◽  
Radim Kocich ◽  
Jonathan C.T. Cullen ◽  
...  
Keyword(s):  
Residual Stress ◽  
Thermomechanical Processing ◽  
Heavy Alloy ◽  
Tungsten Heavy Alloy ◽  
Rotary Swaging

Microstructure and mechanical properties of a rotary friction welded tungsten heavy alloy

2019 ◽  
Vol 61 (3) ◽  
pp. 209-212
Author(s):  
Ramachandran Damodaram ◽  
Gangaraju Manogna Karthik ◽  
Sree Vardhan Lalam
Keyword(s):  
Mechanical Properties ◽  
Heavy Alloy ◽  
Tungsten Heavy Alloy ◽  
Microstructure And Mechanical Properties

Brazing of Tungsten Heavy Alloy and Fe-Ni-Co Based Superalloy by a Novel Cu-Ti Based Amorphous Filler

2021 ◽  
Author(s):  
Yuxin Xu ◽  
Xiaoming Qiu ◽  
Jinlong Su ◽  
Suyu Wang ◽  
Xiaohui Zhao ◽  
...  
Keyword(s):  
Heavy Alloy ◽  
Tungsten Heavy Alloy

Failure Mechanism of Tungsten Heavy Alloy for Mould

2011 ◽  
Vol 341-342 ◽  
pp. 432-435
Author(s):  
Wei Huang ◽  
Ya Feng Li ◽  
Kai Wen Tian ◽  
Fu Jun Shang ◽  
Yong Liu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Failure Mechanism ◽  
Matrix Composite ◽  
External Load ◽  
High Strength ◽  
Strength Level ◽  
Heavy Alloy ◽  
Theoretical Strength ◽  
Tungsten Heavy Alloy ◽  
The Real

The failure mechanism of tungsten matrix composite was studied with microscale numerical simulation. The results show that high strength tungsten particles are the real loading elements of composite, its strength level embodies the whole property of the composite to some extent. The real stress in tungsten particles is much higher than the external load, so failure may take place when the external load is less than the theoretical strength of tungsten particles.

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