Accession Number:

AD0806641

Title:

A STUDY OF THE STRAIN-AGE CRACK SENSITIVITY OF RENE' 41

Descriptive Note:

Final rept. no. 1, 1 May 1965-15 Aug 1966

Corporate Author:

GENERAL ELECTRIC CO CINCINNATI OH MATERIALS DEVELOPMENT LAB OPERATION

Personal Author(s):

• Hughes, Warren P.
• Berry, Thomas F.
• Yount, Reed E.

Report Date:

1966-09-01

Pagination or Media Count:

215.0

Abstract:

A program of research work directed toward the study of the strain- age crack sensitivity of Rene 41 was conducted and is described. The primary objectives of this study were To perfect a screening test which could be used to evaluate and quantitatively measure factors which contribute to strain-age cracking in complex nickel-base superalloys and To subsequently use this information as a means of improving material quality and welding and heat treating process techniques and procedures which would minimize or eliminate the occurrence of strain-age cracking in fabricated components. Of the various factors studied, low carbon 0.04 - 0.02 and electron beam welding were documented as being the most capable of decreasing the sensitivity of Rene 41 to strain-age cracking. Further studies are planned under a continuation of this contract.

Descriptors:

• *AGING(MATERIALS)
• *NICKEL ALLOYS
• *SENSITIVITY
• *STRAIN(MECHANICS)
• ARC WELDING
• ELECTRON BEAM WELDING
• INERT GAS WELDING
• INSTRUMENTATION
• METALLOGRAPHY
• MICROSTRUCTURE
• STRESSES
• TEST METHODS

Subject Categories:

• Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE