THE DEVELOPMENT OF FABRICATING TECHNIQUES FOR PRODUCING HIGH PURITY RHENIUM STRIP 6' X 6' X 0.005'
CHASE BRASS AND COPPER CO INC WATERBURY CONN
Pagination or Media Count:
Four sintered compacts of Lot 210 Re powder were cold rolled to 0.014-in. gage. Further fabrication was discontinued because of small cracks and other imperfections. Chemical analysis indicated that these failures were caused by Ta contamination introduced during the sintering operation. Two additional compacts were made and sintered in a manner that would insure against any contamination of this type. One of these compacts was successfully fabricated to 6- x 6- x 0.005-in. sheet. The other compact was rolled to 0.005-in. gage but samples were removed at various stages of reduction for subsequent chemical analysis and therefore a full 6-in. square sheet could not be made. Two samples of electron-beam melted ingot were rolled to 0.085-in. gage, one at room temperature and the other at 300 to 500 F. The warm rolled sample fabricated slightly better than the other sample in that the amount of edge cracking was somewhat less. These samples will be rolled to 0.005-in. gage. Author