Technical report on the fundamental factors influencing the behavior of welded structures under conditions of multiaxial stress, and variations of temperature, stress concentration, and rates of strain / by G. Sachs, L.J. Ebert and A.W. Dana.
A detailed study was made of a low carbon ship plate steel, both 'as received' and 'as welded', by utilizing hardness tests and eccentric notch bar static tension tests at various temperatures. Considerable nonuniformity was revealed in the 'as received' plate, that is,...
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| Other title: | Fundamental factors influencing the behavior of welded structures under conditions of multiaxial stress, and variations of temperature, stress concentration, and rates of strain. |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Cleveland, Ohio : [Washington, D.C.] :
Case Institute of Techology ; Navy Department, Bureau of Ships : National Research Council, Committee on Ship Construction,
1949.
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| Summary: | A detailed study was made of a low carbon ship plate steel, both 'as received' and 'as welded', by utilizing hardness tests and eccentric notch bar static tension tests at various temperatures. Considerable nonuniformity was revealed in the 'as received' plate, that is, localized areas showed relatively high transition temperatures. A brittle-ductile transition zone was found to exist between -40 and -80F for the investigated steel. A zone of maximum hardness occurred at the junction of the weld metal and the heat affected zone, from which the hardness (Rockwell B) approached that of the unaffected plate. A zone of minimum ductility (eccentric notch strength) was found 0.3 to 0.4 inch from the weld centerline. This zone was located by using the eccentric notch bar tension test at low temperatures. The zone of low ductility is thought to be the zone which is heated to the maximum subcritical temperature, with the further possibility of embrittlement by strain aging and intermediate transformation products. (Author) |
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| Item Description: | "May 10, 1949"--Transmittal letter. "Case Institute of Technology under Bureau of Ships contract NObs-45470 in cooperation with Committee of Ship Construction, Division of Engineering and Industrial Research, National Research Council." |
| Physical Description: | 28 pages : illustrations. |
| Bibliography: | Includes bibliographical references. |