Accession Number:

ADA133598

Title:

Elevated Temperature Low Cycle Fatigue of Nickel Base Superalloys in the Conventionally Cast, Directionally Solidified and Single Crystal Forms.

Descriptive Note:

Final rept. 1 Jan 80-30 Jun 83,

Corporate Author:

CINCINNATI UNIV OH DEPT OF MATERIALS SCIENCE AND METALLURGICAL ENGINEERING

Personal Author(s):

Report Date:

1983-08-01

Pagination or Media Count:

61.0

Abstract:

High temperature low cycle fatigue LCF has been studied for directionally solidified DS and conventionally cast CC Rene 80. For the conventionally cast material testing was carried out on smooth bars over the temperature range 75 F 24 C to 1800 F 982 C. It was found that at low temperatures slip was planar and carbides acted as crack initiation sites. In correspondence with the importance of carbides on the fatigue life it was found that life cosrrelated best with total strain range as opposed to plastic strain range.

Subject Categories:

  • Properties of Metals and Alloys
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE