Electrical Resistivities of Ge–Sb–Te Alloys

Lan, Rui

doi:10.1007/978-981-15-2217-8_4

Cited by 1 publication

(4 citation statements)

References 22 publications

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“…The hardening curve of the aluminum alloy 2024 reveals that its mechanical strength increases gradually according to the artificial aging process. In the first hour of heat treatment the hardness increased rapidly, as is also observed in the work of Banhart [8], given an increase in the formation of the Al 2 CuMg phase. The variation in hardness as a function of the artificial aging time showed a decrease in hardness in 2 h. After 3 h the increase in hardness is more subtle and may be associated with the intermediate phases of of heat treatment a pronounced increase in electrical conductivity is observed, in the following hours there is a decrease in the gradient, this behavior being probably linked to the loss of solute caused by formation of precipitates.…”

Section: Resultssupporting

confidence: 73%

“…The analysis of electrical conductivity was performed in real time using the four-terminal method during the heat treatment process and a correlation between hardness and aging times was stablished. This method is used in electronics to analyze the electrical resistivity of metallic materials [7][8][9], but it is little explored to monitor the behavior of electrical conductivity during artificial aging. During the monitoring and characterization of the 2024 alloy, analyses of hardness, electrical conductivity and material image were performed from samples as received, solubilized at 495 °C for 3 h, and with artificial aging treatment.…”

Section: Introduction mentioning

confidence: 99%

“…Electrical conductivity in metals is associated with changes in the scattering of conduction electrons and by network vibration [8,[15][16][17][18]. In general, this influence is related to imperfections in the crystalline network that act as spreading centers and can be treated as stationary, in the case in question, because the impurities represent local disturbances in the crystalline network.…”

Section: Introduction mentioning

confidence: 99%

“…The four-terminal method technique is used in other scientific works [7][8][9] to analyze the behavior of electrical resistivity. The technique is used in equipment such as ohmmeters for measuring resistance of metallic materials up to the order of 1 mΩ [17].…”

Section: Introduction mentioning

confidence: 99%

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Electrical Conductivity Behavior of the Aluminum Alloy 2024 during Artificial Aging

Diehl¹,

Köhler²,

Schneider³

et al. 2020

JMSE-A

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Precipitation-hardened aluminum alloys need to be heat treated to achieve the mechanical properties required for their application. The production of these materials can be optimized to make them more attractive and competitive comparing to other materials such as composites that have a growing and large market share in aeronautics field. One way to do this is by controlling the artificial aging of precipitation-hardenable aluminum alloys, such as the 2000 series Al-Cu alloys. These alloys can be monitored in real time by analyzing their conductivity behavior inside the furnace. The objective of this work is to evaluate the electrical conductivity behavior in real time of the 2024 alloy during the artificial aging at 190 °C. For this, analyses were made in order to assess the behavior of the microhardness curve by aging time and its microstructural characterization with thermal treatments in the times of 1 h to 9 h interrupted every 1 h. The results of the electrical conductivity versus hardness curve showed a significant correlation and indicate that this measure has great potential to be used as a tool to control the thermal treatment of aging.

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Section: Resultssupporting

confidence: 73%

Section: Introduction mentioning

confidence: 99%

Section: Introduction mentioning

confidence: 99%

Section: Introduction mentioning

confidence: 99%

See 2 more Smart Citations