Man of Steel

The famous cartoon character Superman has many super powers. Everybody knows that. He s the Man of Steel. He has X-ray vision. His hearing is so good, he can tune in on one voice in a crowded city. And, of course "He s faster than a speeding bullet More powerful than a locomotive Able to leap tall buildings in a single bound "... 

Some of Superman s most exciting postwar atomic adventures can be found in the thirty-six-episode cliffhanger Superman vs. the Atom Man, which aired on radio in 1946. Although the dangers of kryptonite (a fragment from the Man of Steel s home planet that alone could destroy him) were first introduced in a 1943 radio show, kryptonite did not gain widespread popularity until this particular story. After Hiroshima,... 

Superman The Complete History [ofj the Life and Times of the Man of Steel. San Francisco Chronicle Books, 1998. 

Once man had learned to produce good steel, its superiority over bronze for military purposes would be rapidly appreciated, and the Conservative soldier proverbially slow to adopt new methods would be compelled by dire necessity to throw aside his bronze sword and shield and betake to himself weapons of steel (p. 275). 

Sil] Sil man, G.I., Phase Diagram of the C-Fe-V System and its Application to Metallography of Steels and Cast Irons , Met. Sci. Heat Treat., 34(11—12), 665—670 (1992) (Phase Diagram, Phase Relations, Thermodyn., Experimental, 11)... 

Ciudad Juarez, Mexico A medical source of 16.7 TBq of Co was discarded by mistake in December 1983 at Ciudad Juarez in Mexico, and the 6,000 pellets of that source contaminated many products of steel, which were sold in Mexico and the USA. About 1,000 people were exposed by this source and the collective effective dose was estimated to be 150 man-Sv. 

Throughout history, we have witnessed trends where one material has evolved to replace another for efficiency, performance or economic reasons. Consider the fact that the ages of man to date have been broadly defined In terms of their key materials — the Stone Age, the Bronze Age, the Iron Age and the Age of Steel. 

The first materials used for making household utensils and ornamental objects included metals, such as gold, copper, and iron. Whereas gold was found in its pure state by early man, copper was most likely the first metal to be extracted successfully. The production of steel is said to have started about 600 to 800 CE. The periods that followed saw the development of a wide variety of ferrous and nonferrous metals. To date, there have been significant developments in engineering materials. Common engineering materials are now classified to include engineered materials, such as ceramics and reinforced composite materials, alloys of various types, and nanomaterials. 

If the amplitude of plastic strain Asp/2 is plotted in a log-log scale as function of the stress amplitude AaJ2, usually a line is obtained. This is shown in Fig. 6.2 obtained using experimental data relative to hot rolled Man-Ten steel of 330 MPa yield and type RQC-100 steel quenched and tempered to 840 MPa yield strength from [1] and to ductile cast iron tested by Milella. The linear relationship that holds for almost all metals and alloys has induced Masing [2] to introduce a ffa— p dependence of the type... 

Gantes CJ, Koulatsou K (2013) Methodology for nonlinear finite element analyses to evaluate strength of steel stractures. In Obr bski JB, Taiczewski R (eds) Beyond the limits of man. Paper presented at Intema-tional Association for Shell and Spatial Structures (IASS), headquartered in Madrid, Spain, symposium 2013, Wroclaw, 23-27 Sept 2013... 

The metal looks like iron it exists in four allotropic modifications, stable over various temperature ranges. Although not easily attacked by air. it is slowly attacked by water and dissolves readily in dilute acids to give manganese(II) salts. The stable form of the metal at ordinary temperatures is hard and brittle—hence man ganese is only of value in alloys, for example in steels (ferroalloys) and with aluminium, copper and nickel. 

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