Accession Number : AD0632831

Title :   DEVELOPMENT OF PRACTICE FOR COMPOSITE ROLLING OF STRUCTURAL METAL PANELS.

Descriptive Note : Quarterly rept. no. 1,

Corporate Author : BATTELLE MEMORIAL INST COLUMBUS OHIO

Personal Author(s) : Van Orsdel,J. R. ; Bartlett,E. S. ; Grube,K. R. ; Ogden,H. R.

Report Date : APR 1966

Pagination or Media Count : 31

Abstract : The program concerns the development of practice for panel fabrication from five specific materials. Inconel, PH 14-8Mo, and maraging 18Ni-250 were studied during the first quarter. Preliminary sandwich panels of vertical-rib design were prepared from the three alloys with encouraging results. Refinement of surface-preparation techniques and preservation of clean surfaces until bonds are formed were found to be necessary to produce satisfactory bonding. Filler materials can be leached routinely with nitric acid without harm to Inconel and PH 14-8Mo structure, but care must be taken to avoid dissolution of the maraging structure. Acid concentrations of approximately 80 per cent should be maintained when leaching carbon -steel filler from maraging-steel structures, and bath temperatures should not be allowed to rise above 140 F. The three alloys can be fabricated into structural panels by roll welding. However, compositional differences between alloys are undoubtedly responsible for bond -quality differences. The most readily formed bonds were in Inconel, followed by 18Ni-250 and PH 14-8Mo. (Author)

Descriptors :   (*SANDWICH PANELS, *ROLLING(METALLURGY)), WELDING, BONDING, MARAGING STEELS, STAINLESS STEEL, MOLYBDENUM ALLOYS, NICKEL ALLOYS, CARBON ALLOYS, NITRIC ACID, COMPOSITE MATERIALS

Subject Categories : Laminates and Composite Materials
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE