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- W1526809684 abstract "The results of this work may be summarized as follows: (1) Water quenching 3/4-in. plates for six seconds did not raise the hardness in the center of the plate. Longer quenching times increased the center hardness, an indication that the ultimate strength of the plate was increased. The hardness at the edge of all plates quenched was approximately 95 R sub B, with the higher carbon steel having the highest surface hardness. (2) The microstructure of the center of plates, quenched for periods longer than six seconds, was no longer typical of as-rolled steel but, instead, tended to show ferrite outlining the original austenite grain areas. The centers of the quenched plates also showed some Widmanstatten structures. The transition temperature, when the 12 ft-lb keyhole notch Charpy criterion was used, was lowered by quenching the plates from the last hot-rolling pass. Longer quenching times gave lower transition temperatures. The higher manganese Steel W-5 appeared to be more adaptable to quenching than Steel W-1, since the shape of the keyhole Charpy transition curves for Steel W-5 was not altered by quenching. (4) In general, increasing the length of the quenching time lowered the tear test transition temperature. An exception was the plate of Steel W-1 which was quenched in water for 25 seconds before being air-cooled. This plate had a higher transition temperature than the plates which had been quenched for shorter times or air-cooled from the last hot-rolling pass." @default.
- W1526809684 created "2016-06-24" @default.
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- W1526809684 date "1955-07-01" @default.
- W1526809684 modified "2023-09-22" @default.
- W1526809684 title "EFFECT OF ACCELERATED COOLING AFTER HOT-ROLLING ON THE NOTCHED-BAR PROPERTIES OF SHIP PLATE STEEL" @default.
- W1526809684 hasPublicationYear "1955" @default.
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