Metallurgical Examination of Samples Representing Ninety-Six Two Inch Thick Ballistic Test Plates
WATERTOWN ARSENAL LABS MA
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Metallurgical examination including chemical analyses, macro- examination, hardness surveys, Charpy V-notch impact tests, nick-break fracture tests, Jominy hardenability tests, and microexamination was carried out on selected samples from the 96 two inch thich repair welded cast armor ballistic test plates. The harness level of weld deposits in the American Steel Foundries plates was generally lower than that of the Continential Steel Foundries deposits, apparently because of a difference in the welding technique, The stress relief treatment reduced the maximum weld metal hardness slightly, and the draw treatment reduced the hardness more markedly. The weld metal hardness of the samples which were quenched and tempered after welding was very low because of low incompletely penetration is apparent for weld deposits with low hardness level.
- Properties of Metals and Alloys