Topic
Alloy
About: Alloy is a research topic. Over the lifetime, 171884 publications have been published within this topic receiving 1719420 citations. The topic is also known as: alloys.
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TL;DR: In this article, the microstructural evolution during age hardening of a Cu-bearing Al-Mg-Si alloy has been investigated by the three-dimensional atom probe (3DAP) and transmission electron microscope (TEM) techniques, in order to clarify the effect of Cu on the initial age-hardening response.
Abstract: The microstructural evolution during age hardening of a Cu-bearing Al-Mg-Si alloy has been investigated by the three-dimensional atom probe (3DAP) and transmission electron microscope (TEM) techniques, in order to clarify the effect of Cu on the initial age-hardening response. After 30 minutes of artificial aging at 175 °C, the alloy shows a significant increase in hardness. The TEM observations have revealed that very fine, needle-shaped β″ precipitates are formed in addition to spherical Guinier-Preston (GP) zones, whereas only the spherical GP zones are observed in the Al-Mg-Si ternary alloy using the same aging condition. The number density of the precipitates is significantly affected by the preaging conditions. The 3DAP analysis shows that the distribution of Cu atoms is uniform after 30 minutes of artificial aging at 175 °C, whereas Cu atoms are incorporated into the needle-shaped β″ precipitates after 10 hours of aging at 175 °C. Based on these microanalytical results, the effect of Cu additions on the age-hardening response of Al-Mg-Si alloys is discussed.
163 citations
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TL;DR: In this paper, high strength metal alloys are described, including chromium, nickel, copper, manganese, silicon, niobium, tungsten and iron.
Abstract: High strength metal alloys are described. At least one composition of a metal alloy includes chromium, nickel, copper, manganese, silicon, niobium, tungsten and iron. A heater system may include a canister at least partially made from material containing at least one of the metal alloys. A system for heating a subterranean formation may include a tublar that is at least partially made from a material containing at least one of the metal alloys.
163 citations
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TL;DR: In this article, the authors determined the kinetic parametes for the oxygen evolution reaction on 50-50 atom percent alloys of Ru, Ir, RuO 2, IrO 2 and IrPt and compared with results obtained using ruthenium, iridium, platinum, and RuO2 /TiO 2 electrodes.
163 citations
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TL;DR: In this article, the growth of alumina scales on a conventional wrought alloy Fe-20Cr-5Al and on an yttria containing ODS alloy of similar base composition were investigated.
163 citations
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02 Jun 1965
163 citations