Enhancement of Mechanical Properties of Inorganic Glass under Ultrasonic Treatment

2020 ◽  
Vol 12 (sp2) ◽  
Keyword(s):  
Mechanical Properties ◽  
Ultrasonic Treatment ◽  
Inorganic Glass

Ultrasonic Treatment of Nanostructured Powders for the Production of Zirconia Ceramics

1998 ◽  
Vol 520 ◽  
Author(s):  
O.L. Khasanov ◽  
Yu.P. Pokholkov ◽  
V.M. Sokolov ◽  
E.S. Dvilis ◽  
V.K. Strutz ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Ultrasonic Treatment ◽  
Power Level ◽  
Volumetric Shrinkage ◽  
Zirconia Ceramics ◽  
Elastic Aftereffect ◽  
Nanostructured Powders

ABSTRACTThe structure and mechanical properties of Y-TZP nanoceramics produced by ultrasonic (US) action on nanostructured ZrO2 – 5.4wt% Y2O3 powder have been analyzed. The influence of powder US-treatment on elastic aftereffect of a compact, uniformity of ceramics volumetric shrinkage, on ceramic nanostructure forming and as a result on its density, hardness, impact strength was shown. The optimum of power level of US-action was defined.

Vibromechanic Way to Remove Residual Stresses

2014 ◽  
Vol 1064 ◽  
pp. 103-107
Author(s):  
Andrey Albertovich Korolev ◽  
Albert Viktorovich Korolev ◽  
Aleksandr Aleksandrovich Fomin ◽  
Sergey Aleksandrovich Savran ◽  
Andrey Fyodorovich Balaev ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Treatment ◽  
Residual Stresses ◽  
Ultrasonic Treatment ◽  
Process Efficiency ◽  
Mechanical Stabilization

The article describes the process efficiency of ultrasonic mechanical stabilization of details in comparison with the conventional thermal treatment. It is shown that ultrasonic treatment enhances the productivity and quality of manufactured details. As a result of the proposed stabilizing treatment the relaxation of residual stresses, the required geometry, such as waviness and ovality, as well as necessary mechanical properties are ensured.

scholarly journals Microstructure And Mechanical Properties of Ultrasonically Processed Al-7Si Alloy / Y2O3 Nanocomposite

2021 ◽  
Author(s):  
T. Satish Kumar ◽  
Jayakrishnan Nampoothiri ◽  
S. Shalini
Keyword(s):  
Mechanical Properties ◽  
Ultrasonic Treatment ◽  
A356 Alloy ◽  
Stir Casting ◽  
Porosity Level ◽  
Aluminum Metal ◽  
Microstructure And Mechanical Properties ◽  
Aluminum Metal Matrix Composite ◽  
Alloy Addition ◽  
A356 Aluminum

Abstract The aim of the present study is to investigate the microstructure and mechanical properties of the A356 aluminum metal matrix composite reinforced with Y2O3 particles. The composite is synthesized by adding 1 and 2 vol.% of reinforcement via stir casting assisted by ultrasonic treatment (UT). Microstructural contemplates shows improvement in the dispersion of nano Y2O3 particles and decrease in the porosity level due to the ultrasound aided synthesis. The UT refines the size of the Y2O3 particles as well as helps to improve its dispersion. The secondary dendrite arm spacing of 2 vol.% Y2O3 reinforced samples with 5 min UT is found to be significantly reduced to 12 µm as compared to that of the as-cast A356 alloy. Addition of 2 vol.% of nano Y2O3 has significantly improved the hardness of the A356 alloy from 60 HV to 108 HV. A considerable increment in the YS and TS of the A356 alloy is observed with the of Y2O3 and found to further improve with UT. However, small reduction in ductility is observed with the addition of Y2O3 as well as ultrasonic treatment.

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