Engineers are looking for higher quality metal alloys to solve design problems. Two examples of current substitution trends: Titanium is replacing copper-nickel alloys in large desalinization plants. In a separate development, metallurgical-bonded, nickel-based alloy clad pipe is replacing conventional corrosion-resistant alloy pipe in sour gas applications. The trends were reported by L. Patrick Hassey, CEO of Allegheny Technologies, in a recent conference call with analysts. Hassey retired on May 1.
Plastic bags can become useful as either raw materials for plastics or feedstock for fuel. It's when they're not recycled that they become a major problem. That's what California's bag ban will prevent.
NASA's JPL and Caltech have achieved the mind-boggling feat of 3D printing multiple metals in a single end-part, grading from one alloy to another. They've also developed a method for combining metals with carbon fiber composites in end-production parts.
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