Accession Number : AD0487749

Title :   DEVELOPMENT OF ROLLING PROCESS FOR TITANIUM COMPRESSOR BLADES.

Descriptive Note : Final technical rept. Sep 64-Jun 66,

Corporate Author : KELSEY-HAYES CO UTICA NY TURBINE PARTS DIV

Personal Author(s) : Barberio, Francis D. ; Ziobro, Martin T. ; Ilges, Fred W.

Report Date : JUL 1966

Pagination or Media Count : 115

Abstract : This final report is a compilation of research data recorded during the development of a rolling process for titanium compressor blades. Three of the new titanium alloys (6Al-4V, 7Al-4Mo, and IMI-679) were warm rolled with the Allison T-56, 3rd stage, blade design after an evaluation of rolling temperatures, precoatings, and die lubricants, using a knuckle-rolling process. After completion of blading on a production basis, the titanium blades were sent to the Allison Division of General Motors for fatigue, erosion, and engine tests. Adequate information to date substantiates the fact that all of the titanium alloys can be produced on a commercial basis from the Allison T-56 blade design. Alloys 6Al-4V and 8Al-1Mo-1V were warm rolled using the GE-1, 4th stage, blade design. Because of the difficulty in up-setting the root section of this blade design, an extruded and coined blank was necessary. Blueprint tolerances were unattainable at the T section of the airfoil because of the loss of heat during rolling. Therefore, because of these two difficulties, production of the GE-1 blade is not economical using the process developed in this program. Evaluation of the 8Al-1Mo-1V alloy through warm rolling operations shows that this alloy can be commercially warm rolled with the Allison T-56 blade design. (Author)

Descriptors :   *ROLLING(METALLURGY)), (*COMPRESSOR BLADES, TITANIUM ALLOYS, AIRFOILS, HEAT TREATMENT, ALLOYS, ROLLING MILLS, COATINGS, DIES, ALUMINUM ALLOYS, VANADIUM ALLOYS, MOLYBDENUM ALLOYS, LUBRICANTS, FORGING.

Subject Categories : Fabrication Metallurgy
      Hydraulic and Pneumatic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE