The influence of solution heat-treatment temperature on the mechanical properties of a recrystallized aluminium alloy 2020

1984 ◽  
Vol 19 (6) ◽  
pp. 2079-2084 ◽  
Author(s):  
W. X. Feng ◽  
F. S. Lin
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aluminium Alloy ◽  
Heat Treatment Temperature ◽  
Solution Heat Treatment ◽  
Treatment Temperature ◽  
Solution Heat Treatment Temperature

Effect of Solution Heat Treatment Temperature on Mechanical Property and Silicon Morphology of Cast A319 Alloy

2015 ◽  
Vol 754-755 ◽  
pp. 619-623
Author(s):  
Darus Murizam ◽  
Shamsul Baharin Jamaludin ◽  
Jamil Noorina Hidayu ◽  
Che Pa Faizul ◽  
Mohd Zaki Ruhiyuddin ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Mechanical Property ◽  
Heat Treatment Temperature ◽  
Solution Heat Treatment ◽  
Solution Treatment ◽  
Treatment Temperature ◽  
Solution Treatment Temperature ◽  
Artificial Ageing ◽  
A319 Alloy ◽  
Solution Heat Treatment Temperature

The effect of different solution heat treatment temperature on the mechanical property and silicon morphology was investigated by hardness test and microstructural analysis. The samples of A319 alloy were solution heat treated at three different temperatures (495°C, 510°C and 525°C) followed by artificial ageing at 180°C. The ageing kinetic was accelerated and peak aged gave the lowest value for the samples solution treated at the highest solution treatment temperature (525°C). This result was due to the fragmentation and spherodization of the silicon particles morphologies in the microstructure of the samples.

scholarly journals Self-Toughening and Self-Enhancement Poly(arylene ether nitrile) with Low Dielectric Constant by Solid Crosslinking Reaction

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1403 ◽  
Author(s):  
Lifen Tong ◽  
Xiting Lei ◽  
Guangyao Yang ◽  
Xiaobo Liu
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Dielectric Constant ◽  
Thermal Properties ◽  
Heat Treatment Temperature ◽  
Treatment Temperature ◽  
Cross Linking ◽  
Hydroxyl Groups ◽  
Crosslinking Reaction ◽  
Arylene Ether

A novel poly(arylene ether nitrile) terminated with hydroxyl groups (PEN–OH) was synthesized successfully. The effects of heat-treatment temperature on the thermal properties, mechanical properties, and dielectric properties of the PEN–OH films were studied in detail. Due to the cross-linking reaction occurring, at high temperature, among the nitrile groups on the side of the PEN–OH main chain to form a structurally stable triazine ring, the structure of materials changes from a linear structure to a bulk structure. Thus, the thermal properties and mechanical properties were improved. In addition, the occurrence of cross-linking reactions can reduce the polar groups in the material, leading to the decrease of dielectric constant. As the heat-treatment temperature increased, the glass-transition temperature increased from 180.6 °C to 203.6 °C, and the dielectric constant decreased from 3.4 to 2.8 at 1 MHz. Proper temperature heat-treatment could improve the tensile strength, as well as the elongation, at the break of the PEN–OH films. Moreover, because of the excellent adhesive property of PEN–OH to copper foil, a double-layer flexible copper clad laminate (FCCL) without any adhesives based on PEN–OH was prepared by a simple hot-press method, which possessed high peel strength with 1.01 N/mm. Therefore, the PEN–OH has potential applications in the electronic field.

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