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A survey of high-cycle fatigue data for commercial β-titanium alloys was conducted to rationalize the wide variations in fatigue resistance even at similar tensile-strength levels. It was found that fatigue behavior, especially the endurance limits, for various alloy compositions can be roughly grouped into three classes on the basis of processing, heat treatment, and resulting microstructure. The...
About 80% of all magnesium is produced by an electrolytic process. The electrolytic route is an energy-intensive process, and many of the developed countries have realized the need to produce magnesium in a more cost-effective manner. Toward this goal, a less energy-intensive, more compact electrolytic cell has been developed at the Central Electrochemical Research Institute, India. A 2,200 A cell...
Molybdenum’s role in the electronics market has been an important one since the earliest days of vacuum tubes. Common electronic applications include components used to manufacture electrical devices, including setter tiles for sintering ceramic substrates and multilayer ceramic circuits, as well as physical-vapor deposition masks. Molybdenum is also used for thermal-management applications when paired...
Emerging metallic materials, processing, and manufacturing technologies offer an important opportunity to meet current aircraft-airframe and jet-engine affordability goals, due to their inherent low material costs and excellent producibility characteristics. But to successfully meet systems goals within this new affordability-driven scenario, a consolidation ofindustry and military-agency development...
C. L. Briant is with the Division of Engineering at Brown University and is the advisor to JOM from the Refractory Metals and Materials Committee of the Structural Materials Division of TMS.
The work reported in this article forms the basis for an extended study of arsenic bronze. The ease with which a copper-arsenic alloy could be prepared by fusing copper metal with arsenopyrite has been shown; conditions can be readily adjusted to yield alloys with compositions equivalent to those made in antiquity. While iron-metal prills were found in the fused crucible remains, it is probable that...
High-strength tantalum alloy usage has been limited since the cancellation of the manned space-power program in 1969. Yet, because of its unique combination of mechanical properties, fabricability, and high melting temperature, certain tantalum alloys are still used in applications where no other material is suitable, primarily for applications in the electronics industry.
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