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Latest Precipitation hardening Stories

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2011-08-08 14:27:16

Scientists at Berkeley Lab find nanoparticle size is readily controlled to make stronger aluminum alloys Long before they knew they were doing it "“ as long ago as the Wright Brother's first airplane engine "“ metallurgists were incorporating nanoparticles in aluminum to make a strong, hard, heat-resistant alloy. The process is called solid-state precipitation, in which, after the melt has been quickly cooled, atoms of alloying metals migrate through a solid matrix and gather...

2010-11-26 12:09:37

Materials scientists from Case Western Reserve University and the Institute of Solid State Research in Jlich, Germany have produced particularly clear changes in the atomic structure of sapphire following deformation at high temperatures. Peering through an electron microscope down to a level where a human hair would seem as wide as a washer and dryer set, they were able to quantify deviations from the regular columns of aluminum and oxygen atoms - the stuff of perfect sapphire crystals. The...

2006-11-01 06:01:59

By Villanueva, D M E; Junior, F C P; Plaut, R L; Padilha, A F The present work studies, in a comparative manner, the sigma phase precipitation of three stainless steels: austenitic type 316L (17Cr-12Ni-2.5Mo, wt-%), superferritic type DIN W. Nr. 1.4575 (Nb- 28Cr-4Ni-2Mo, wt-%) and duplex type DIN W. Nr. 1.4462 or UNS S31803 (22Cr-5.5Ni-3Mo-0.14N, wt-%). In austenitic stainless steel, the formation of sigma phase occurred both at austenite grain boundaries and inside delta ferrite islands....


Word of the Day
mallemaroking
  • Nautical, the visiting and carousing of sailors in the Greenland ships.
This word is apparently from a confusion of two similar Dutch words: 'mallemerok,' a foolish woman, and 'mallemok,' a name for some persons among the crew of a whaling vessel.