Today’s scientists are striving to expand capabilities even further by developing metals that are stronger, lighter, and allow more shape memory. Typically crystalline in structure, metals are often studied via elemental and structural analysis. Optical emission sp...
High-entropy alloys, also commonly referred to as multi-principal element alloys (MPEAs), are a class of materials that are currently of interest among the metallurgical community1,2,7,8,9. In the past decade numerous scientific investigations have uncovered remarkable properties exhibited by these...
1.2.1.1 Metals Cobalt-based, iron-based, and titanium-based alloys are all popular in hip implant manufacture because they are hard, tough, resistant to fracture and corrosion, and well tolerated by the body. The most important medical alloys are defined by the American Society for Testing Mate...
High or medium- entropy alloys (HEAs/MEAs) are multi-principal element alloys with equal atomic elemental composition, some of which have shown record-breaking mechanical performance. However, the link between short-range order (SRO) and the exceptional mechanical properties of these alloys has remai...
1. A method for forming carefully controlled compositions of TiNi-base alloys composed of metals reactive in their elemental form with a graphite crucible, comprising the steps of placing into the graphite crucible a prealloyed material of the alloy type to be obtained, heating by external ...
is in solution in the austenite and free to segregate to the grain boundaries in its elemental form. The amount of phosphorus segregating to the grain boundaries increases with increasing bulk concentration and decreasingaustenitizing temperature. The increased segregation causes an increased amount ofin...
to 20 µm. The elemental concentrations of aluminum are elevated around regions with high magnesium concentrations. This finding is interpreted as an enrichment of aluminum at the grain boundaries. On the other hand, the area density of comparatively small grains with the highest aluminum and the...
RHE的低电势下具有超高的质量活性, 达到28.3 A mg−1noble metals(图11(b)), 这分别是商用Pt/C和Rh/C催化剂的40.4和74.5倍. 此外, 其在50 mV的过电位下同样具有超高的转化频率, 达到30.1 s−1, 并且在10000次循环后未出现衰减, 表现出优异的稳定性(图11(c)). XAS结合理论计算表明, ...
This plastic deformation mechanism is also an efficient way to decrease grain size to sub-10 nm size for low melting temperature metals like Al, making this structural design one solution to the strength-plasticity trade-off.Similar content being viewed by others Heat-resistant super-dispersed ...
elemental mapping (Supplementary Fig.7); however, the presence of oxygen is limited to the surface of the NP (~5 nm thick). The oxide layers might have been formed upon exposure to air. EDX line scans of individual particles for each HEA sample are presented in Fig.3g, h, which ...