Search

...carbon steels, and low alloy steel, are peened with either chilled cast iron or cast steel shot (500–1250 µm) and fatigue strengths can be increased by up to 50%. Spring steels are widely shot peened for coil- and leaf-spring applications. The second major reason for shot peening is to improve the stress corrosion resistance of several alloys, including: aluminium...

...carbon steels (0.30—0.50 wt% C) and low alloy steels containing 1% Cr, 1.5—4.0% Ni, 0.30—0.50% Mo and 0.60% Mn are all readily hot forged in open dies (this includes carburising steels). The majority of aluminium alloys are hot forged with little problem; including the aluminium/magnesium/silicon series (6000) and the aluminium/copper-based alloys (2000). Titanium...

...carbon dioxide 0.04% nitrogen 78% argon 0.9% oxygen 21% carbon dioxide 95% nitrogen 2.6% argon 1.9% oxygen 0.16% carbon monoxide 0.06% Satellites The Moon Phobos and Deimos Footnotes *The SI unit of pressure is actually the Pascal (Pa) and 1 atmosphere is 101 325 Pa. On 13 August 1672, Dutch astronomer Christiaan Huygens observed a white spot at Mars’ south pole (Figure...

...carbon was preserved at this time and in these swamps. After the Carboniferous, in the Permian and Triassic times, dry conditions prevailed with more desert deposits and hypersaline lakes forming as seen in the salt deposits near Carrickfergus, County Antrim. Sea levels rose again in the Jurassic period with shallow seas containing ammonites recorded in Larne. During the...