Description of physical aging kinetics of glassy polymers by interpretation of parameters of the Kohlrausch-Williams-Watts relaxation function via simulation

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
Navid Rabiei ◽  
Seyed Hossein Amirshahi ◽  
Mohammad Haghighat Kish
Keyword(s):  
Relaxation Function ◽  
Physical Aging ◽  
Glassy Polymers ◽  
Aging Kinetics ◽  
Kinetics Of

Physical aging kinetics of syndiotactic polystyrene as determined from creep behavior

1997 ◽  
Vol 37 (9) ◽  
pp. 1459-1468 ◽  
Author(s):  
Jorg Beckmann ◽  
Gregory B. McKenna ◽  
Brian G. Landes ◽  
David H. Bank ◽  
Robert A. Bubeck
Keyword(s):  
Creep Behavior ◽  
Physical Aging ◽  
Syndiotactic Polystyrene ◽  
Aging Kinetics ◽  
Kinetics Of

STRENGTHENING FEATURES AND AGING KINETICS OF HIGH-STRENGTH CAST ALUMINUM ALLOY AL4MS BASED ON Al–Si–Cu–Mg SYSTEM

2021 ◽  
pp. 24-34
Author(s):  
E.N. Kablov ◽  
◽  
E.V. Belov ◽  
A.V. Trapeznikov ◽  
A.A. Leonov ◽  
...  
Keyword(s):  
High Strength ◽  
Cast Aluminum Alloy ◽  
High Plasticity ◽  
Cast Aluminum ◽  
Second Stage ◽  
Low Temperature Aging ◽  
Aging Kinetics ◽  
Kinetics Of ◽  
Cold Box ◽  
Temperature Aging

Based on the conducted research, it has been found that quenching with hot isostatic pressure and step-by-step aging with consistently increasing temperatures of low-temperature aging (first stage) and high-temperature aging (second stage) provides high tensile strength for AL4MS copper silumin during cold box casting, increases the flow stress by 10%, and maintains high plasticity compared to the level of properties after single-stage aging.

Advantage of In-situ over Ex-situ techniques as reliability tool: Aging kinetics of Imec’s MCM-D discrete passives devices.

2003 ◽  
Vol 43 (9-11) ◽  
pp. 1785-1790
Author(s):  
P. Soussan ◽  
G. Lekens ◽  
R. Dreesen ◽  
W. De Ceuninck ◽  
E. Beyne
Keyword(s):  
Ex Situ ◽  
Aging Kinetics ◽  
Kinetics Of

scholarly journals Thermal Kinetics of SiCp Reinforced Al-Zn-Mg-Cu Alloy Composite

2021 ◽  
Author(s):  
Saikat Das ◽  
R. Govinda Rao ◽  
Prasanta Kumar Rout
Keyword(s):  
Base Alloy ◽  
Accelerated Aging ◽  
Stir Casting ◽  
Hardness Profile ◽  
Scanning Calorimetry ◽  
Transmission Electron ◽  
The Matrix ◽  
Aging Kinetics ◽  
Aging Phenomena ◽  
Kinetics Of

Abstract In the present work, the artificial aging kinetics of SiCp particles reinforced AA7075-SiCp composite fabricated by stir casting method was investigated. The aging behavior of AA7075-SiCp composite was investigated by Rockwell hardness tests and differential scanning calorimetry (DSC). Results show there are no changes in the sequences of formation and dissolution of precipitate. Reinforced particles are uniformly distributed throughout the matrix. The hardness profile shows increase in hardness with the comparison of AA7075 base alloy. In addition to SiCp in the matrix, precipitation kinetics has changed compared with base alloy since higher dislocations present in composite, hence requires lower activation energy to form ή precipitate and takes less time to reach the maximum hardness. In contrast, the addition of SiCp at low volume percent also showing accelerated aging phenomena in the composite during the aging process. High-resolution transmission electron microscope (HRTEM) micrograph of peak age (T6) condition divulges that enormous fine and plate-like ή (MgZn2) precipitates are uniformly distributed in the composite.

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