Residual Stress Heterogeneity Induced By Powder Metallurgy Gear Manufacturing Chains

2021 ◽  
Author(s):  
Lucas Robatto ◽  
Ronnie Rego ◽  
Victor Righetti ◽  
Gilmar Thim ◽  
Anderson Borille
Keyword(s):  
Residual Stress ◽  
Powder Metallurgy ◽  
Gear Manufacturing ◽  
Stress Heterogeneity

Measurement of Residual Stress in a Powder Metallurgy Aluminium-SiC Composite

2004 ◽  
Vol 12 (1-3) ◽  
pp. 129-133
Author(s):  
L.C.R. Schneider ◽  
M.E. Fitzpatrick ◽  
M.R. Daymond ◽  
S.V. Hainsworth ◽  
A.C.F. Cocks
Keyword(s):  
Residual Stress ◽  
Powder Metallurgy

Determination of Residual Stresses in Hot Extruded Rod

2005 ◽  
Vol 473-474 ◽  
pp. 489-0 ◽  
Author(s):  
Tamás Törköly ◽  
György Ziaja ◽  
György Viczián
Keyword(s):  
Residual Stress ◽  
Thermal Expansion ◽  
Powder Metallurgy ◽  
Residual Stresses ◽  
Equilibrium State ◽  
Strain Gauges ◽  
Tool Geometry ◽  
Low Density ◽  
Long Time

The relative low density of aluminum is well known for a long time, but its adaptability is limited by mechanical and thermal expansion properties. These unfavorable properties can be significantly improved by powder metallurgy. The produced material has a non-equilibrium state; it follows from the power metallurgy, so arises the question of the measurement of residual stress. We produced some square rod for our experiment with different tool geometry, thus the deformation histories of this specimens were different too. We measured the residual stress of this specimens by means of strain-gauges.

scholarly journals Residual stress interaction on gear manufacturing

2018 ◽  
Vol 252 ◽  
pp. 249-258 ◽  
Author(s):  
Ronnie Rego ◽  
Christoph Löpenhaus ◽  
Jefferson Gomes ◽  
Fritz Klocke
Keyword(s):  
Residual Stress ◽  
Gear Manufacturing

Effect of Annealing on Properties of the TiN & TiAlN Coatings Deposited on Powder Metallurgy High Speed Steel ( S790 )

2013 ◽  
Vol 477-478 ◽  
pp. 1397-1402 ◽  
Author(s):  
Chuan Liang Cao ◽  
Xiang Lin Zhang ◽  
Chun Fa Dong ◽  
Xiang Zha
Keyword(s):  
Residual Stress ◽  
Powder Metallurgy ◽  
Adhesion Strength ◽  
Physical Vapor Deposition ◽  
High Speed ◽  
Phase Variation ◽  
High Speed Steel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hardness Tester

To improve the mechanical properties of the physical vapor deposition (PVD) coatings deposited on fine-blanking tools and increase the tool life, TiN and TiAlN coatings were deposited on the powder metallurgy high speed steel S790 substrates by Multi-arc ion plating, and then annealed at the temperature of 500°C for one hour in vacuum enviroment. The phase variation, residual stress, morphology, surface microhardness and adhesion strength of coatings were respectively analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), Vickers hardness tester and automatic scratch tester. The preferred orientations in the coatings are not changed after annealing, indicating no disparities in the crystal structure of the coatings. The residual stress of coatings released a little after annealing, however the adhesion strength between the coatings and substrates increased obviously, which indicated that the properties of the TiN and TiAlN coatings deposited on S790 steel were improved.

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